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Linux 6.1-rc7

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Merge 6.1-rc7 into android-mainline

Linux 6.1-rc7

Change-Id: I5273a4225425a0f7f770c0e361df67d1abdcd5f6
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman 2022-11-28 16:47:55 +00:00
commit e00ac7661f
124 changed files with 1271 additions and 634 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.mailmap
View File

@ -29,6 +29,7 @@ Alexandre Belloni <alexandre.belloni@bootlin.com> <alexandre.belloni@free-electr
Alexei Starovoitov <ast@kernel.org> <alexei.starovoitov@gmail.com>
Alexei Starovoitov <ast@kernel.org> <ast@fb.com>
Alexei Starovoitov <ast@kernel.org> <ast@plumgrid.com>
Alex Hung <alexhung@gmail.com> <alex.hung@canonical.com>
Alex Shi <alexs@kernel.org> <alex.shi@intel.com>
Alex Shi <alexs@kernel.org> <alex.shi@linaro.org>
Alex Shi <alexs@kernel.org> <alex.shi@linux.alibaba.com>
@ -382,6 +383,7 @@ Santosh Shilimkar <santosh.shilimkar@oracle.org>
Santosh Shilimkar <ssantosh@kernel.org>
Sarangdhar Joshi <spjoshi@codeaurora.org>
Sascha Hauer <s.hauer@pengutronix.de>
Satya Priya <quic_c_skakit@quicinc.com> <skakit@codeaurora.org>
S.Çağlar Onur <caglar@pardus.org.tr>
Sean Christopherson <seanjc@google.com> <sean.j.christopherson@intel.com>
Sean Nyekjaer <sean@geanix.com> <sean.nyekjaer@prevas.dk>

11
Documentation/admin-guide/kernel-parameters.txt
View File

@ -6967,3 +6967,14 @@
memory, and other data can't be written using
xmon commands.
off xmon is disabled.
amd_pstate= [X86]
disable
Do not enable amd_pstate as the default
scaling driver for the supported processors
passive
Use amd_pstate as a scaling driver, driver requests a
desired performance on this abstract scale and the power
management firmware translates the requests into actual
hardware states (core frequency, data fabric and memory
clocks etc.)

26
Documentation/admin-guide/pm/amd-pstate.rst
View File

@ -283,23 +283,19 @@ efficiency frequency management method on AMD processors.
Kernel Module Options for ``amd-pstate``
=========================================
.. _shared_mem:
Passive Mode
------------
``shared_mem``
Use a module param (shared_mem) to enable related processors manually with
**amd_pstate.shared_mem=1**.
Due to the performance issue on the processors with `Shared Memory Support
<perf_cap_>`_, we disable it presently and will re-enable this by default
once we address performance issue with this solution.
``amd_pstate=passive``
To check whether the current processor is using `Full MSR Support <perf_cap_>`_
or `Shared Memory Support <perf_cap_>`_ : ::
ray@hr-test1:~$ lscpu | grep cppc
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd cppc arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca fsrm
If the CPU flags have ``cppc``, then this processor supports `Full MSR Support
<perf_cap_>`_. Otherwise, it supports `Shared Memory Support <perf_cap_>`_.
It will be enabled if the ``amd_pstate=passive`` is passed to the kernel in the command line.
In this mode, ``amd_pstate`` driver software specifies a desired QoS target in the CPPC
performance scale as a relative number. This can be expressed as percentage of nominal
performance (infrastructure max). Below the nominal sustained performance level,
desired performance expresses the average performance level of the processor subject
to the Performance Reduction Tolerance register. Above the nominal performance level,
processor must provide at least nominal performance requested and go higher if current
operating conditions allow.
``cpupower`` tool support for ``amd-pstate``

7
Documentation/devicetree/bindings/iio/adc/aspeed,ast2600-adc.yaml
View File

@ -62,13 +62,6 @@ properties:
description:
Inform the driver that last channel will be used to sensor battery.
aspeed,trim-data-valid:
type: boolean
description: |
The ADC reference voltage can be calibrated to obtain the trimming
data which will be stored in otp. This property informs the driver that
the data store in the otp is valid.
required:
- compatible
- reg

2
Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml
View File

@ -24,7 +24,7 @@ properties:
oneOf:
- items:
- enum:
- qcom,sc7280-bwmon
- qcom,sc7280-cpu-bwmon
- qcom,sdm845-bwmon
- const: qcom,msm8998-bwmon
- const: qcom,msm8998-bwmon # BWMON v4

13
MAINTAINERS
View File

@ -10294,7 +10294,7 @@ T: git https://github.com/intel/gvt-linux.git
F: drivers/gpu/drm/i915/gvt/
INTEL HID EVENT DRIVER
M: Alex Hung <alex.hung@canonical.com>
M: Alex Hung <alexhung@gmail.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
F: drivers/platform/x86/intel/hid.c
@ -18018,7 +18018,7 @@ L: linux-fbdev@vger.kernel.org
S: Maintained
F: drivers/video/fbdev/savage/
S390
S390 ARCHITECTURE
M: Heiko Carstens <hca@linux.ibm.com>
M: Vasily Gorbik <gor@linux.ibm.com>
M: Alexander Gordeev <agordeev@linux.ibm.com>
@ -18073,6 +18073,15 @@ L: netdev@vger.kernel.org
S: Supported
F: drivers/s390/net/
S390 MM
M: Alexander Gordeev <agordeev@linux.ibm.com>
M: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
L: linux-s390@vger.kernel.org
S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git
F: arch/s390/include/asm/pgtable.h
F: arch/s390/mm
S390 PCI SUBSYSTEM
M: Niklas Schnelle <schnelle@linux.ibm.com>
M: Gerald Schaefer <gerald.schaefer@linux.ibm.com>

2
Makefile
View File

@ -2,7 +2,7 @@
VERSION = 6
PATCHLEVEL = 1
SUBLEVEL = 0
EXTRAVERSION = -rc6
EXTRAVERSION = -rc7
NAME = Hurr durr I'ma ninja sloth
# *DOCUMENTATION*

4
arch/microblaze/Makefile
View File

@ -67,12 +67,12 @@ linux.bin.ub linux.bin.gz: linux.bin
linux.bin: vmlinux
linux.bin linux.bin.gz linux.bin.ub:
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
@echo 'Kernel: $(boot)/$@ is ready' ' (#'`cat .version`')'
@echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
PHONY += simpleImage.$(DTB)
simpleImage.$(DTB): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(addprefix $(boot)/$@., ub unstrip strip)
@echo 'Kernel: $(boot)/$@ is ready' ' (#'`cat .version`')'
@echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
define archhelp
echo '* linux.bin - Create raw binary'

2
arch/nios2/boot/Makefile
View File

@ -20,7 +20,7 @@ $(obj)/vmlinux.bin: vmlinux FORCE
$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,gzip)
$(obj)/vmImage: $(obj)/vmlinux.gz
$(obj)/vmImage: $(obj)/vmlinux.gz FORCE
$(call if_changed,uimage)
@$(kecho) 'Kernel: $@ is ready'

2
arch/s390/kernel/crash_dump.c
View File

@ -46,7 +46,7 @@ struct save_area {
u64 fprs[16];
u32 fpc;
u32 prefix;
u64 todpreg;
u32 todpreg;
u64 timer;
u64 todcmp;
u64 vxrs_low[16];

2
arch/x86/boot/Makefile
View File

@ -83,7 +83,7 @@ cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
$(call if_changed,image)
@$(kecho) 'Kernel: $@ is ready' ' (#'`cat .version`')'
@$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE

54
arch/x86/hyperv/hv_init.c
View File

@ -77,7 +77,7 @@ static int hyperv_init_ghcb(void)
static int hv_cpu_init(unsigned int cpu)
{
union hv_vp_assist_msr_contents msr = { 0 };
struct hv_vp_assist_page **hvp = &hv_vp_assist_page[smp_processor_id()];
struct hv_vp_assist_page **hvp = &hv_vp_assist_page[cpu];
int ret;
ret = hv_common_cpu_init(cpu);
@ -87,34 +87,32 @@ static int hv_cpu_init(unsigned int cpu)
if (!hv_vp_assist_page)
return 0;
if (!*hvp) {
if (hv_root_partition) {
/*
* For root partition we get the hypervisor provided VP assist
* page, instead of allocating a new page.
*/
rdmsrl(HV_X64_MSR_VP_ASSIST_PAGE, msr.as_uint64);
*hvp = memremap(msr.pfn <<
HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT,
PAGE_SIZE, MEMREMAP_WB);
} else {
/*
* The VP assist page is an "overlay" page (see Hyper-V TLFS's
* Section 5.2.1 "GPA Overlay Pages"). Here it must be zeroed
* out to make sure we always write the EOI MSR in
* hv_apic_eoi_write() *after* the EOI optimization is disabled
* in hv_cpu_die(), otherwise a CPU may not be stopped in the
* case of CPU offlining and the VM will hang.
*/
if (hv_root_partition) {
/*
* For root partition we get the hypervisor provided VP assist
* page, instead of allocating a new page.
*/
rdmsrl(HV_X64_MSR_VP_ASSIST_PAGE, msr.as_uint64);
*hvp = memremap(msr.pfn << HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT,
PAGE_SIZE, MEMREMAP_WB);
} else {
/*
* The VP assist page is an "overlay" page (see Hyper-V TLFS's
* Section 5.2.1 "GPA Overlay Pages"). Here it must be zeroed
* out to make sure we always write the EOI MSR in
* hv_apic_eoi_write() *after* the EOI optimization is disabled
* in hv_cpu_die(), otherwise a CPU may not be stopped in the
* case of CPU offlining and the VM will hang.
*/
if (!*hvp)
*hvp = __vmalloc(PAGE_SIZE, GFP_KERNEL | __GFP_ZERO);
if (*hvp)
msr.pfn = vmalloc_to_pfn(*hvp);
}
WARN_ON(!(*hvp));
if (*hvp) {
msr.enable = 1;
wrmsrl(HV_X64_MSR_VP_ASSIST_PAGE, msr.as_uint64);
}
if (*hvp)
msr.pfn = vmalloc_to_pfn(*hvp);
}
if (!WARN_ON(!(*hvp))) {
msr.enable = 1;
wrmsrl(HV_X64_MSR_VP_ASSIST_PAGE, msr.as_uint64);
}
return hyperv_init_ghcb();

3
arch/x86/include/asm/cpufeatures.h
View File

@ -305,6 +305,9 @@
#define X86_FEATURE_USE_IBPB_FW (11*32+16) /* "" Use IBPB during runtime firmware calls */
#define X86_FEATURE_RSB_VMEXIT_LITE (11*32+17) /* "" Fill RSB on VM exit when EIBRS is enabled */
#define X86_FEATURE_MSR_TSX_CTRL (11*32+20) /* "" MSR IA32_TSX_CTRL (Intel) implemented */
/* Intel-defined CPU features, CPUID level 0x00000007:1 (EAX), word 12 */
#define X86_FEATURE_AVX_VNNI (12*32+ 4) /* AVX VNNI instructions */
#define X86_FEATURE_AVX512_BF16 (12*32+ 5) /* AVX512 BFLOAT16 instructions */

38
arch/x86/kernel/cpu/tsx.c
View File

@ -58,24 +58,6 @@ static void tsx_enable(void)
wrmsrl(MSR_IA32_TSX_CTRL, tsx);
}
static bool tsx_ctrl_is_supported(void)
{
u64 ia32_cap = x86_read_arch_cap_msr();
/*
* TSX is controlled via MSR_IA32_TSX_CTRL. However, support for this
* MSR is enumerated by ARCH_CAP_TSX_MSR bit in MSR_IA32_ARCH_CAPABILITIES.
*
* TSX control (aka MSR_IA32_TSX_CTRL) is only available after a
* microcode update on CPUs that have their MSR_IA32_ARCH_CAPABILITIES
* bit MDS_NO=1. CPUs with MDS_NO=0 are not planned to get
* MSR_IA32_TSX_CTRL support even after a microcode update. Thus,
* tsx= cmdline requests will do nothing on CPUs without
* MSR_IA32_TSX_CTRL support.
*/
return !!(ia32_cap & ARCH_CAP_TSX_CTRL_MSR);
}
static enum tsx_ctrl_states x86_get_tsx_auto_mode(void)
{
if (boot_cpu_has_bug(X86_BUG_TAA))
@ -135,7 +117,7 @@ static void tsx_clear_cpuid(void)
rdmsrl(MSR_TSX_FORCE_ABORT, msr);
msr |= MSR_TFA_TSX_CPUID_CLEAR;
wrmsrl(MSR_TSX_FORCE_ABORT, msr);
} else if (tsx_ctrl_is_supported()) {
} else if (cpu_feature_enabled(X86_FEATURE_MSR_TSX_CTRL)) {
rdmsrl(MSR_IA32_TSX_CTRL, msr);
msr |= TSX_CTRL_CPUID_CLEAR;
wrmsrl(MSR_IA32_TSX_CTRL, msr);
@ -158,7 +140,8 @@ static void tsx_dev_mode_disable(void)
u64 mcu_opt_ctrl;
/* Check if RTM_ALLOW exists */
if (!boot_cpu_has_bug(X86_BUG_TAA) || !tsx_ctrl_is_supported() ||
if (!boot_cpu_has_bug(X86_BUG_TAA) ||
!cpu_feature_enabled(X86_FEATURE_MSR_TSX_CTRL) ||
!cpu_feature_enabled(X86_FEATURE_SRBDS_CTRL))
return;
@ -191,7 +174,20 @@ void __init tsx_init(void)
return;
}
if (!tsx_ctrl_is_supported()) {
/*
* TSX is controlled via MSR_IA32_TSX_CTRL. However, support for this
* MSR is enumerated by ARCH_CAP_TSX_MSR bit in MSR_IA32_ARCH_CAPABILITIES.
*
* TSX control (aka MSR_IA32_TSX_CTRL) is only available after a
* microcode update on CPUs that have their MSR_IA32_ARCH_CAPABILITIES
* bit MDS_NO=1. CPUs with MDS_NO=0 are not planned to get
* MSR_IA32_TSX_CTRL support even after a microcode update. Thus,
* tsx= cmdline requests will do nothing on CPUs without
* MSR_IA32_TSX_CTRL support.
*/
if (x86_read_arch_cap_msr() & ARCH_CAP_TSX_CTRL_MSR) {
setup_force_cpu_cap(X86_FEATURE_MSR_TSX_CTRL);
} else {
tsx_ctrl_state = TSX_CTRL_NOT_SUPPORTED;
return;
}

13
arch/x86/kvm/mmu/mmu.c
View File

@ -2443,6 +2443,7 @@ static bool __kvm_mmu_prepare_zap_page(struct kvm *kvm,
{
bool list_unstable, zapped_root = false;
lockdep_assert_held_write(&kvm->mmu_lock);
trace_kvm_mmu_prepare_zap_page(sp);
++kvm->stat.mmu_shadow_zapped;
*nr_zapped = mmu_zap_unsync_children(kvm, sp, invalid_list);
@ -4262,14 +4263,14 @@ static int direct_page_fault(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault
if (is_page_fault_stale(vcpu, fault, mmu_seq))
goto out_unlock;
r = make_mmu_pages_available(vcpu);
if (r)
goto out_unlock;
if (is_tdp_mmu_fault)
if (is_tdp_mmu_fault) {
r = kvm_tdp_mmu_map(vcpu, fault);
else
} else {
r = make_mmu_pages_available(vcpu);
if (r)
goto out_unlock;
r = __direct_map(vcpu, fault);
}
out_unlock:
if (is_tdp_mmu_fault)

12
arch/x86/kvm/svm/nested.c
View File

@ -1091,6 +1091,12 @@ int nested_svm_vmexit(struct vcpu_svm *svm)
static void nested_svm_triple_fault(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
if (!vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_SHUTDOWN))
return;
kvm_clear_request(KVM_REQ_TRIPLE_FAULT, vcpu);
nested_svm_simple_vmexit(to_svm(vcpu), SVM_EXIT_SHUTDOWN);
}
@ -1125,6 +1131,9 @@ void svm_free_nested(struct vcpu_svm *svm)
if (!svm->nested.initialized)
return;
if (WARN_ON_ONCE(svm->vmcb != svm->vmcb01.ptr))
svm_switch_vmcb(svm, &svm->vmcb01);
svm_vcpu_free_msrpm(svm->nested.msrpm);
svm->nested.msrpm = NULL;
@ -1143,9 +1152,6 @@ void svm_free_nested(struct vcpu_svm *svm)
svm->nested.initialized = false;
}
/*
* Forcibly leave nested mode in order to be able to reset the VCPU later on.
*/
void svm_leave_nested(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);

16
arch/x86/kvm/svm/svm.c
View File

@ -346,12 +346,6 @@ int svm_set_efer(struct kvm_vcpu *vcpu, u64 efer)
return 0;
}
static int is_external_interrupt(u32 info)
{
info &= SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID;
return info == (SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR);
}
static u32 svm_get_interrupt_shadow(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
@ -1438,6 +1432,7 @@ static void svm_vcpu_free(struct kvm_vcpu *vcpu)
*/
svm_clear_current_vmcb(svm->vmcb);
svm_leave_nested(vcpu);
svm_free_nested(svm);
sev_free_vcpu(vcpu);
@ -3425,15 +3420,6 @@ static int svm_handle_exit(struct kvm_vcpu *vcpu, fastpath_t exit_fastpath)
return 0;
}
if (is_external_interrupt(svm->vmcb->control.exit_int_info) &&
exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR &&
exit_code != SVM_EXIT_NPF && exit_code != SVM_EXIT_TASK_SWITCH &&
exit_code != SVM_EXIT_INTR && exit_code != SVM_EXIT_NMI)
printk(KERN_ERR "%s: unexpected exit_int_info 0x%x "
"exit_code 0x%x\n",
__func__, svm->vmcb->control.exit_int_info,
exit_code);
if (exit_fastpath != EXIT_FASTPATH_NONE)
return 1;

4
arch/x86/kvm/vmx/nested.c
View File

@ -4854,6 +4854,7 @@ void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 vm_exit_reason,
static void nested_vmx_triple_fault(struct kvm_vcpu *vcpu)
{
kvm_clear_request(KVM_REQ_TRIPLE_FAULT, vcpu);
nested_vmx_vmexit(vcpu, EXIT_REASON_TRIPLE_FAULT, 0, 0);
}
@ -6440,9 +6441,6 @@ static int vmx_get_nested_state(struct kvm_vcpu *vcpu,
return kvm_state.size;
}
/*
* Forcibly leave nested mode in order to be able to reset the VCPU later on.
*/
void vmx_leave_nested(struct kvm_vcpu *vcpu)
{
if (is_guest_mode(vcpu)) {

29
arch/x86/kvm/x86.c
View File

@ -628,6 +628,12 @@ static void kvm_queue_exception_vmexit(struct kvm_vcpu *vcpu, unsigned int vecto
ex->payload = payload;
}
/* Forcibly leave the nested mode in cases like a vCPU reset */
static void kvm_leave_nested(struct kvm_vcpu *vcpu)
{
kvm_x86_ops.nested_ops->leave_nested(vcpu);
}
static void kvm_multiple_exception(struct kvm_vcpu *vcpu,
unsigned nr, bool has_error, u32 error_code,
bool has_payload, unsigned long payload, bool reinject)
@ -5195,7 +5201,7 @@ static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu,
if (events->flags & KVM_VCPUEVENT_VALID_SMM) {
if (!!(vcpu->arch.hflags & HF_SMM_MASK) != events->smi.smm) {
kvm_x86_ops.nested_ops->leave_nested(vcpu);
kvm_leave_nested(vcpu);
kvm_smm_changed(vcpu, events->smi.smm);
}
@ -9805,7 +9811,7 @@ static void update_cr8_intercept(struct kvm_vcpu *vcpu)
int kvm_check_nested_events(struct kvm_vcpu *vcpu)
{
if (kvm_check_request(KVM_REQ_TRIPLE_FAULT, vcpu)) {
if (kvm_test_request(KVM_REQ_TRIPLE_FAULT, vcpu)) {
kvm_x86_ops.nested_ops->triple_fault(vcpu);
return 1;
}
@ -10560,15 +10566,16 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
r = 0;
goto out;
}
if (kvm_check_request(KVM_REQ_TRIPLE_FAULT, vcpu)) {
if (is_guest_mode(vcpu)) {
if (kvm_test_request(KVM_REQ_TRIPLE_FAULT, vcpu)) {
if (is_guest_mode(vcpu))
kvm_x86_ops.nested_ops->triple_fault(vcpu);
} else {
if (kvm_check_request(KVM_REQ_TRIPLE_FAULT, vcpu)) {
vcpu->run->exit_reason = KVM_EXIT_SHUTDOWN;
vcpu->mmio_needed = 0;
r = 0;
goto out;
}
goto out;
}
if (kvm_check_request(KVM_REQ_APF_HALT, vcpu)) {
/* Page is swapped out. Do synthetic halt */
@ -11997,8 +12004,18 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
WARN_ON_ONCE(!init_event &&
(old_cr0 || kvm_read_cr3(vcpu) || kvm_read_cr4(vcpu)));
/*
* SVM doesn't unconditionally VM-Exit on INIT and SHUTDOWN, thus it's
* possible to INIT the vCPU while L2 is active. Force the vCPU back
* into L1 as EFER.SVME is cleared on INIT (along with all other EFER
* bits), i.e. virtualization is disabled.
*/
if (is_guest_mode(vcpu))
kvm_leave_nested(vcpu);
kvm_lapic_reset(vcpu, init_event);
WARN_ON_ONCE(is_guest_mode(vcpu) || is_smm(vcpu));
vcpu->arch.hflags = 0;
vcpu->arch.smi_pending = 0;

32
arch/x86/kvm/xen.c
View File

@ -954,6 +954,14 @@ static int kvm_xen_hypercall_complete_userspace(struct kvm_vcpu *vcpu)
return kvm_xen_hypercall_set_result(vcpu, run->xen.u.hcall.result);
}
static inline int max_evtchn_port(struct kvm *kvm)
{
if (IS_ENABLED(CONFIG_64BIT) && kvm->arch.xen.long_mode)
return EVTCHN_2L_NR_CHANNELS;
else
return COMPAT_EVTCHN_2L_NR_CHANNELS;
}
static bool wait_pending_event(struct kvm_vcpu *vcpu, int nr_ports,
evtchn_port_t *ports)
{
@ -1042,6 +1050,10 @@ static bool kvm_xen_schedop_poll(struct kvm_vcpu *vcpu, bool longmode,
*r = -EFAULT;
goto out;
}
if (ports[i] >= max_evtchn_port(vcpu->kvm)) {
*r = -EINVAL;
goto out;
}
}
if (sched_poll.nr_ports == 1)
@ -1215,6 +1227,7 @@ int kvm_xen_hypercall(struct kvm_vcpu *vcpu)
bool longmode;
u64 input, params[6], r = -ENOSYS;
bool handled = false;
u8 cpl;
input = (u64)kvm_register_read(vcpu, VCPU_REGS_RAX);
@ -1242,9 +1255,17 @@ int kvm_xen_hypercall(struct kvm_vcpu *vcpu)
params[5] = (u64)kvm_r9_read(vcpu);
}
#endif
cpl = static_call(kvm_x86_get_cpl)(vcpu);
trace_kvm_xen_hypercall(input, params[0], params[1], params[2],
params[3], params[4], params[5]);
/*
* Only allow hypercall acceleration for CPL0. The rare hypercalls that
* are permitted in guest userspace can be handled by the VMM.
*/
if (unlikely(cpl > 0))
goto handle_in_userspace;
switch (input) {
case __HYPERVISOR_xen_version:
if (params[0] == XENVER_version && vcpu->kvm->arch.xen.xen_version) {
@ -1279,10 +1300,11 @@ int kvm_xen_hypercall(struct kvm_vcpu *vcpu)
if (handled)
return kvm_xen_hypercall_set_result(vcpu, r);
handle_in_userspace:
vcpu->run->exit_reason = KVM_EXIT_XEN;
vcpu->run->xen.type = KVM_EXIT_XEN_HCALL;
vcpu->run->xen.u.hcall.longmode = longmode;
vcpu->run->xen.u.hcall.cpl = static_call(kvm_x86_get_cpl)(vcpu);
vcpu->run->xen.u.hcall.cpl = cpl;
vcpu->run->xen.u.hcall.input = input;
vcpu->run->xen.u.hcall.params[0] = params[0];
vcpu->run->xen.u.hcall.params[1] = params[1];
@ -1297,14 +1319,6 @@ int kvm_xen_hypercall(struct kvm_vcpu *vcpu)
return 0;
}
static inline int max_evtchn_port(struct kvm *kvm)
{
if (IS_ENABLED(CONFIG_64BIT) && kvm->arch.xen.long_mode)
return EVTCHN_2L_NR_CHANNELS;
else
return COMPAT_EVTCHN_2L_NR_CHANNELS;
}
static void kvm_xen_check_poller(struct kvm_vcpu *vcpu, int port)
{
int poll_evtchn = vcpu->arch.xen.poll_evtchn;

8
arch/x86/mm/ioremap.c
View File

@ -217,9 +217,15 @@ __ioremap_caller(resource_size_t phys_addr, unsigned long size,
* Mappings have to be page-aligned
*/
offset = phys_addr & ~PAGE_MASK;
phys_addr &= PHYSICAL_PAGE_MASK;
phys_addr &= PAGE_MASK;
size = PAGE_ALIGN(last_addr+1) - phys_addr;
/*
* Mask out any bits not part of the actual physical
* address, like memory encryption bits.
*/
phys_addr &= PHYSICAL_PAGE_MASK;
retval = memtype_reserve(phys_addr, (u64)phys_addr + size,
pcm, &new_pcm);
if (retval) {

23
arch/x86/power/cpu.c
View File

@ -513,16 +513,23 @@ static int pm_cpu_check(const struct x86_cpu_id *c)
static void pm_save_spec_msr(void)
{
u32 spec_msr_id[] = {
MSR_IA32_SPEC_CTRL,
MSR_IA32_TSX_CTRL,
MSR_TSX_FORCE_ABORT,
MSR_IA32_MCU_OPT_CTRL,
MSR_AMD64_LS_CFG,
MSR_AMD64_DE_CFG,
struct msr_enumeration {
u32 msr_no;
u32 feature;
} msr_enum[] = {
{ MSR_IA32_SPEC_CTRL, X86_FEATURE_MSR_SPEC_CTRL },
{ MSR_IA32_TSX_CTRL, X86_FEATURE_MSR_TSX_CTRL },
{ MSR_TSX_FORCE_ABORT, X86_FEATURE_TSX_FORCE_ABORT },
{ MSR_IA32_MCU_OPT_CTRL, X86_FEATURE_SRBDS_CTRL },
{ MSR_AMD64_LS_CFG, X86_FEATURE_LS_CFG_SSBD },
{ MSR_AMD64_DE_CFG, X86_FEATURE_LFENCE_RDTSC },
};
int i;
msr_build_context(spec_msr_id, ARRAY_SIZE(spec_msr_id));
for (i = 0; i < ARRAY_SIZE(msr_enum); i++) {
if (boot_cpu_has(msr_enum[i].feature))
msr_build_context(&msr_enum[i].msr_no, 1);
}
}
static int pm_check_save_msr(void)

7
block/blk-mq.c
View File

@ -4045,9 +4045,14 @@ EXPORT_SYMBOL(__blk_mq_alloc_disk);
struct gendisk *blk_mq_alloc_disk_for_queue(struct request_queue *q,
struct lock_class_key *lkclass)
{
struct gendisk *disk;
if (!blk_get_queue(q))
return NULL;
return __alloc_disk_node(q, NUMA_NO_NODE, lkclass);
disk = __alloc_disk_node(q, NUMA_NO_NODE, lkclass);
if (!disk)
blk_put_queue(q);
return disk;
}
EXPORT_SYMBOL(blk_mq_alloc_disk_for_queue);

82
drivers/block/ublk_drv.c
View File

@ -57,10 +57,8 @@
#define UBLK_PARAM_TYPE_ALL (UBLK_PARAM_TYPE_BASIC | UBLK_PARAM_TYPE_DISCARD)
struct ublk_rq_data {
union {
struct callback_head work;
struct llist_node node;
};
struct llist_node node;
struct callback_head work;
};
struct ublk_uring_cmd_pdu {
@ -766,15 +764,31 @@ static inline void __ublk_rq_task_work(struct request *req)
ubq_complete_io_cmd(io, UBLK_IO_RES_OK);
}
static inline void ublk_forward_io_cmds(struct ublk_queue *ubq)
{
struct llist_node *io_cmds = llist_del_all(&ubq->io_cmds);
struct ublk_rq_data *data, *tmp;
io_cmds = llist_reverse_order(io_cmds);
llist_for_each_entry_safe(data, tmp, io_cmds, node)
__ublk_rq_task_work(blk_mq_rq_from_pdu(data));
}
static inline void ublk_abort_io_cmds(struct ublk_queue *ubq)
{
struct llist_node *io_cmds = llist_del_all(&ubq->io_cmds);
struct ublk_rq_data *data, *tmp;
llist_for_each_entry_safe(data, tmp, io_cmds, node)
__ublk_abort_rq(ubq, blk_mq_rq_from_pdu(data));
}
static void ublk_rq_task_work_cb(struct io_uring_cmd *cmd)
{
struct ublk_uring_cmd_pdu *pdu = ublk_get_uring_cmd_pdu(cmd);
struct ublk_queue *ubq = pdu->ubq;
struct llist_node *io_cmds = llist_del_all(&ubq->io_cmds);
struct ublk_rq_data *data;
llist_for_each_entry(data, io_cmds, node)
__ublk_rq_task_work(blk_mq_rq_from_pdu(data));
ublk_forward_io_cmds(ubq);
}
static void ublk_rq_task_work_fn(struct callback_head *work)
@ -782,14 +796,20 @@ static void ublk_rq_task_work_fn(struct callback_head *work)
struct ublk_rq_data *data = container_of(work,
struct ublk_rq_data, work);
struct request *req = blk_mq_rq_from_pdu(data);
struct ublk_queue *ubq = req->mq_hctx->driver_data;
__ublk_rq_task_work(req);
ublk_forward_io_cmds(ubq);
}
static void ublk_submit_cmd(struct ublk_queue *ubq, const struct request *rq)
static void ublk_queue_cmd(struct ublk_queue *ubq, struct request *rq)
{
struct ublk_io *io = &ubq->ios[rq->tag];
struct ublk_rq_data *data = blk_mq_rq_to_pdu(rq);
struct ublk_io *io;
if (!llist_add(&data->node, &ubq->io_cmds))
return;
io = &ubq->ios[rq->tag];
/*
* If the check pass, we know that this is a re-issued request aborted
* previously in monitor_work because the ubq_daemon(cmd's task) is
@ -803,11 +823,11 @@ static void ublk_submit_cmd(struct ublk_queue *ubq, const struct request *rq)
* guarantees that here is a re-issued request aborted previously.
*/
if (unlikely(io->flags & UBLK_IO_FLAG_ABORTED)) {
struct llist_node *io_cmds = llist_del_all(&ubq->io_cmds);
struct ublk_rq_data *data;
llist_for_each_entry(data, io_cmds, node)
__ublk_abort_rq(ubq, blk_mq_rq_from_pdu(data));
ublk_abort_io_cmds(ubq);
} else if (ublk_can_use_task_work(ubq)) {
if (task_work_add(ubq->ubq_daemon, &data->work,
TWA_SIGNAL_NO_IPI))
ublk_abort_io_cmds(ubq);
} else {
struct io_uring_cmd *cmd = io->cmd;
struct ublk_uring_cmd_pdu *pdu = ublk_get_uring_cmd_pdu(cmd);
@ -817,23 +837,6 @@ static void ublk_submit_cmd(struct ublk_queue *ubq, const struct request *rq)
}
}
static void ublk_queue_cmd(struct ublk_queue *ubq, struct request *rq,
bool last)
{
struct ublk_rq_data *data = blk_mq_rq_to_pdu(rq);
if (ublk_can_use_task_work(ubq)) {
enum task_work_notify_mode notify_mode = last ?
TWA_SIGNAL_NO_IPI : TWA_NONE;
if (task_work_add(ubq->ubq_daemon, &data->work, notify_mode))
__ublk_abort_rq(ubq, rq);
} else {
if (llist_add(&data->node, &ubq->io_cmds))
ublk_submit_cmd(ubq, rq);
}
}
static blk_status_t ublk_queue_rq(struct blk_mq_hw_ctx *hctx,
const struct blk_mq_queue_data *bd)
{
@ -865,19 +868,11 @@ static blk_status_t ublk_queue_rq(struct blk_mq_hw_ctx *hctx,
return BLK_STS_OK;
}
ublk_queue_cmd(ubq, rq, bd->last);
ublk_queue_cmd(ubq, rq);
return BLK_STS_OK;
}
static void ublk_commit_rqs(struct blk_mq_hw_ctx *hctx)
{
struct ublk_queue *ubq = hctx->driver_data;
if (ublk_can_use_task_work(ubq))
__set_notify_signal(ubq->ubq_daemon);
}
static int ublk_init_hctx(struct blk_mq_hw_ctx *hctx, void *driver_data,
unsigned int hctx_idx)
{
@ -899,7 +894,6 @@ static int ublk_init_rq(struct blk_mq_tag_set *set, struct request *req,
static const struct blk_mq_ops ublk_mq_ops = {
.queue_rq = ublk_queue_rq,
.commit_rqs = ublk_commit_rqs,
.init_hctx = ublk_init_hctx,
.init_request = ublk_init_rq,
};
@ -1197,7 +1191,7 @@ static void ublk_handle_need_get_data(struct ublk_device *ub, int q_id,
struct ublk_queue *ubq = ublk_get_queue(ub, q_id);
struct request *req = blk_mq_tag_to_rq(ub->tag_set.tags[q_id], tag);
ublk_queue_cmd(ubq, req, true);
ublk_queue_cmd(ubq, req);
}
static int ublk_ch_uring_cmd(struct io_uring_cmd *cmd, unsigned int issue_flags)

7
drivers/clocksource/arm_arch_timer.c
View File

@ -806,6 +806,9 @@ static u64 __arch_timer_check_delta(void)
/*
* XGene-1 implements CVAL in terms of TVAL, meaning
* that the maximum timer range is 32bit. Shame on them.
*
* Note that TVAL is signed, thus has only 31 of its
* 32 bits to express magnitude.
*/
MIDR_ALL_VERSIONS(MIDR_CPU_MODEL(ARM_CPU_IMP_APM,
APM_CPU_PART_POTENZA)),
@ -813,8 +816,8 @@ static u64 __arch_timer_check_delta(void)
};
if (is_midr_in_range_list(read_cpuid_id(), broken_cval_midrs)) {
pr_warn_once("Broken CNTx_CVAL_EL1, limiting width to 32bits");
return CLOCKSOURCE_MASK(32);
pr_warn_once("Broken CNTx_CVAL_EL1, using 31 bit TVAL instead.\n");
return CLOCKSOURCE_MASK(31);
}
#endif
return CLOCKSOURCE_MASK(arch_counter_get_width());

2
drivers/cpufreq/Kconfig.x86
View File

@ -35,7 +35,7 @@ config X86_PCC_CPUFREQ
If in doubt, say N.
config X86_AMD_PSTATE
tristate "AMD Processor P-State driver"
bool "AMD Processor P-State driver"
depends on X86 && ACPI
select ACPI_PROCESSOR
select ACPI_CPPC_LIB if X86_64

49
drivers/cpufreq/amd-pstate.c
View File

@ -59,12 +59,8 @@
* we disable it by default to go acpi-cpufreq on these processors and add a
* module parameter to be able to enable it manually for debugging.
*/
static bool shared_mem = false;
module_param(shared_mem, bool, 0444);
MODULE_PARM_DESC(shared_mem,
"enable amd-pstate on processors with shared memory solution (false = disabled (default), true = enabled)");
static struct cpufreq_driver amd_pstate_driver;
static int cppc_load __initdata;
static inline int pstate_enable(bool enable)
{
@ -424,12 +420,22 @@ static void amd_pstate_boost_init(struct amd_cpudata *cpudata)
amd_pstate_driver.boost_enabled = true;
}
static void amd_perf_ctl_reset(unsigned int cpu)
{
wrmsrl_on_cpu(cpu, MSR_AMD_PERF_CTL, 0);
}
static int amd_pstate_cpu_init(struct cpufreq_policy *policy)
{
int min_freq, max_freq, nominal_freq, lowest_nonlinear_freq, ret;
struct device *dev;
struct amd_cpudata *cpudata;
/*
* Resetting PERF_CTL_MSR will put the CPU in P0 frequency,
* which is ideal for initialization process.
*/
amd_perf_ctl_reset(policy->cpu);
dev = get_cpu_device(policy->cpu);
if (!dev)
return -ENODEV;
@ -616,6 +622,15 @@ static int __init amd_pstate_init(void)
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
return -ENODEV;
/*
* by default the pstate driver is disabled to load
* enable the amd_pstate passive mode driver explicitly
* with amd_pstate=passive in kernel command line
*/
if (!cppc_load) {
pr_debug("driver load is disabled, boot with amd_pstate=passive to enable this\n");
return -ENODEV;
}
if (!acpi_cpc_valid()) {
pr_warn_once("the _CPC object is not present in SBIOS or ACPI disabled\n");
@ -630,13 +645,11 @@ static int __init amd_pstate_init(void)
if (boot_cpu_has(X86_FEATURE_CPPC)) {
pr_debug("AMD CPPC MSR based functionality is supported\n");
amd_pstate_driver.adjust_perf = amd_pstate_adjust_perf;
} else if (shared_mem) {
} else {
pr_debug("AMD CPPC shared memory based functionality is supported\n");
static_call_update(amd_pstate_enable, cppc_enable);
static_call_update(amd_pstate_init_perf, cppc_init_perf);
static_call_update(amd_pstate_update_perf, cppc_update_perf);
} else {
pr_info("This processor supports shared memory solution, you can enable it with amd_pstate.shared_mem=1\n");
return -ENODEV;
}
/* enable amd pstate feature */
@ -653,16 +666,22 @@ static int __init amd_pstate_init(void)
return ret;
}
device_initcall(amd_pstate_init);
static void __exit amd_pstate_exit(void)
static int __init amd_pstate_param(char *str)
{
cpufreq_unregister_driver(&amd_pstate_driver);
if (!str)
return -EINVAL;
amd_pstate_enable(false);
if (!strcmp(str, "disable")) {
cppc_load = 0;
pr_info("driver is explicitly disabled\n");
} else if (!strcmp(str, "passive"))
cppc_load = 1;
return 0;
}
module_init(amd_pstate_init);
module_exit(amd_pstate_exit);
early_param("amd_pstate", amd_pstate_param);
MODULE_AUTHOR("Huang Rui <ray.huang@amd.com>");
MODULE_DESCRIPTION("AMD Processor P-state Frequency Driver");

4
drivers/fpga/Kconfig
View File

@ -246,7 +246,9 @@ config FPGA_MGR_VERSAL_FPGA
config FPGA_M10_BMC_SEC_UPDATE
tristate "Intel MAX10 BMC Secure Update driver"
depends on MFD_INTEL_M10_BMC && FW_UPLOAD
depends on MFD_INTEL_M10_BMC
select FW_LOADER
select FW_UPLOAD
help
Secure update support for the Intel MAX10 board management
controller.

6
drivers/hv/channel_mgmt.c
View File

@ -533,13 +533,17 @@ static void vmbus_add_channel_work(struct work_struct *work)
* Add the new device to the bus. This will kick off device-driver
* binding which eventually invokes the device driver's AddDevice()
* method.
*
* If vmbus_device_register() fails, the 'device_obj' is freed in
* vmbus_device_release() as called by device_unregister() in the
* error path of vmbus_device_register(). In the outside error
* path, there's no need to free it.
*/
ret = vmbus_device_register(newchannel->device_obj);
if (ret != 0) {
pr_err("unable to add child device object (relid %d)\n",
newchannel->offermsg.child_relid);
kfree(newchannel->device_obj);
goto err_deq_chan;
}

1
drivers/hv/vmbus_drv.c
View File

@ -2082,6 +2082,7 @@ int vmbus_device_register(struct hv_device *child_device_obj)
ret = device_register(&child_device_obj->device);
if (ret) {
pr_err("Unable to register child device\n");
put_device(&child_device_obj->device);
return ret;
}

4
drivers/iio/accel/bma400_core.c
View File

@ -805,8 +805,10 @@ static int bma400_get_steps_reg(struct bma400_data *data, int *val)
ret = regmap_bulk_read(data->regmap, BMA400_STEP_CNT0_REG,
steps_raw, BMA400_STEP_RAW_LEN);
if (ret)
if (ret) {
kfree(steps_raw);
return ret;
}
*val = get_unaligned_le24(steps_raw);
kfree(steps_raw);
return IIO_VAL_INT;

11
drivers/iio/adc/aspeed_adc.c
View File

@ -202,6 +202,8 @@ static int aspeed_adc_set_trim_data(struct iio_dev *indio_dev)
((scu_otp) &
(data->model_data->trim_locate->field)) >>
__ffs(data->model_data->trim_locate->field);
if (!trimming_val)
trimming_val = 0x8;
}
dev_dbg(data->dev,
"trimming val = %d, offset = %08x, fields = %08x\n",
@ -563,12 +565,9 @@ static int aspeed_adc_probe(struct platform_device *pdev)
if (ret)
return ret;
if (of_find_property(data->dev->of_node, "aspeed,trim-data-valid",
NULL)) {
ret = aspeed_adc_set_trim_data(indio_dev);
if (ret)
return ret;
}
ret = aspeed_adc_set_trim_data(indio_dev);
if (ret)
return ret;
if (of_find_property(data->dev->of_node, "aspeed,battery-sensing",
NULL)) {

5
drivers/iio/health/afe4403.c
View File

@ -245,14 +245,14 @@ static int afe4403_read_raw(struct iio_dev *indio_dev,
int *val, int *val2, long mask)
{
struct afe4403_data *afe = iio_priv(indio_dev);
unsigned int reg = afe4403_channel_values[chan->address];
unsigned int field = afe4403_channel_leds[chan->address];
unsigned int reg, field;
int ret;
switch (chan->type) {
case IIO_INTENSITY:
switch (mask) {
case IIO_CHAN_INFO_RAW:
reg = afe4403_channel_values[chan->address];
ret = afe4403_read(afe, reg, val);
if (ret)
return ret;
@ -262,6 +262,7 @@ static int afe4403_read_raw(struct iio_dev *indio_dev,
case IIO_CURRENT:
switch (mask) {
case IIO_CHAN_INFO_RAW:
field = afe4403_channel_leds[chan->address];
ret = regmap_field_read(afe->fields[field], val);
if (ret)
return ret;

12
drivers/iio/health/afe4404.c
View File

@ -250,20 +250,20 @@ static int afe4404_read_raw(struct iio_dev *indio_dev,
int *val, int *val2, long mask)
{
struct afe4404_data *afe = iio_priv(indio_dev);
unsigned int value_reg = afe4404_channel_values[chan->address];
unsigned int led_field = afe4404_channel_leds[chan->address];
unsigned int offdac_field = afe4404_channel_offdacs[chan->address];
unsigned int value_reg, led_field, offdac_field;
int ret;
switch (chan->type) {
case IIO_INTENSITY:
switch (mask) {
case IIO_CHAN_INFO_RAW:
value_reg = afe4404_channel_values[chan->address];
ret = regmap_read(afe->regmap, value_reg, val);
if (ret)
return ret;
return IIO_VAL_INT;
case IIO_CHAN_INFO_OFFSET:
offdac_field = afe4404_channel_offdacs[chan->address];
ret = regmap_field_read(afe->fields[offdac_field], val);
if (ret)
return ret;
@ -273,6 +273,7 @@ static int afe4404_read_raw(struct iio_dev *indio_dev,
case IIO_CURRENT:
switch (mask) {
case IIO_CHAN_INFO_RAW:
led_field = afe4404_channel_leds[chan->address];
ret = regmap_field_read(afe->fields[led_field], val);
if (ret)
return ret;
@ -295,19 +296,20 @@ static int afe4404_write_raw(struct iio_dev *indio_dev,
int val, int val2, long mask)
{
struct afe4404_data *afe = iio_priv(indio_dev);
unsigned int led_field = afe4404_channel_leds[chan->address];
unsigned int offdac_field = afe4404_channel_offdacs[chan->address];
unsigned int led_field, offdac_field;
switch (chan->type) {
case IIO_INTENSITY:
switch (mask) {
case IIO_CHAN_INFO_OFFSET:
offdac_field = afe4404_channel_offdacs[chan->address];
return regmap_field_write(afe->fields[offdac_field], val);
}
break;
case IIO_CURRENT:
switch (mask) {
case IIO_CHAN_INFO_RAW:
led_field = afe4404_channel_leds[chan->address];
return regmap_field_write(afe->fields[led_field], val);
}
break;

6
drivers/iio/industrialio-sw-trigger.c
View File

@ -58,8 +58,12 @@ int iio_register_sw_trigger_type(struct iio_sw_trigger_type *t)
t->group = configfs_register_default_group(iio_triggers_group, t->name,
&iio_trigger_type_group_type);
if (IS_ERR(t->group))
if (IS_ERR(t->group)) {
mutex_lock(&iio_trigger_types_lock);
list_del(&t->list);
mutex_unlock(&iio_trigger_types_lock);
ret = PTR_ERR(t->group);
}
return ret;
}

2
drivers/iio/light/Kconfig
View File

@ -293,6 +293,8 @@ config RPR0521
tristate "ROHM RPR0521 ALS and proximity sensor driver"
depends on I2C
select REGMAP_I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say Y here if you want to build support for ROHM's RPR0521
ambient light and proximity sensor device.

12
drivers/iio/light/apds9960.c
View File

@ -54,9 +54,6 @@
#define APDS9960_REG_CONTROL_PGAIN_MASK_SHIFT 2
#define APDS9960_REG_CONFIG_2 0x90
#define APDS9960_REG_CONFIG_2_GGAIN_MASK 0x60
#define APDS9960_REG_CONFIG_2_GGAIN_MASK_SHIFT 5
#define APDS9960_REG_ID 0x92
#define APDS9960_REG_STATUS 0x93
@ -77,6 +74,9 @@
#define APDS9960_REG_GCONF_1_GFIFO_THRES_MASK_SHIFT 6
#define APDS9960_REG_GCONF_2 0xa3
#define APDS9960_REG_GCONF_2_GGAIN_MASK 0x60
#define APDS9960_REG_GCONF_2_GGAIN_MASK_SHIFT 5
#define APDS9960_REG_GOFFSET_U 0xa4
#define APDS9960_REG_GOFFSET_D 0xa5
#define APDS9960_REG_GPULSE 0xa6
@ -396,9 +396,9 @@ static int apds9960_set_pxs_gain(struct apds9960_data *data, int val)
}
ret = regmap_update_bits(data->regmap,
APDS9960_REG_CONFIG_2,
APDS9960_REG_CONFIG_2_GGAIN_MASK,
idx << APDS9960_REG_CONFIG_2_GGAIN_MASK_SHIFT);
APDS9960_REG_GCONF_2,
APDS9960_REG_GCONF_2_GGAIN_MASK,
idx << APDS9960_REG_GCONF_2_GGAIN_MASK_SHIFT);
if (!ret)
data->pxs_gain = idx;
mutex_unlock(&data->lock);

2
drivers/nvmem/lan9662-otpc.c
View File

@ -36,7 +36,7 @@ struct lan9662_otp {
void __iomem *base;
};
static bool lan9662_otp_wait_flag_clear(void __iomem *reg, u32 flag)
static int lan9662_otp_wait_flag_clear(void __iomem *reg, u32 flag)
{
u32 val;

4
drivers/nvmem/rmem.c
View File

@ -37,9 +37,9 @@ static int rmem_read(void *context, unsigned int offset,
* but as of Dec 2020 this isn't possible on arm64.
*/
addr = memremap(priv->mem->base, available, MEMREMAP_WB);
if (IS_ERR(addr)) {
if (!addr) {
dev_err(priv->dev, "Failed to remap memory region\n");
return PTR_ERR(addr);
return -ENOMEM;
}
count = memory_read_from_buffer(val, bytes, &off, addr, available);

90
drivers/pci/controller/pci-hyperv.c
View File

@ -1613,7 +1613,7 @@ static void hv_pci_compose_compl(void *context, struct pci_response *resp,
}
static u32 hv_compose_msi_req_v1(
struct pci_create_interrupt *int_pkt, const struct cpumask *affinity,
struct pci_create_interrupt *int_pkt,
u32 slot, u8 vector, u16 vector_count)
{
int_pkt->message_type.type = PCI_CREATE_INTERRUPT_MESSAGE;
@ -1631,6 +1631,35 @@ static u32 hv_compose_msi_req_v1(
return sizeof(*int_pkt);
}
/*
* The vCPU selected by hv_compose_multi_msi_req_get_cpu() and
* hv_compose_msi_req_get_cpu() is a "dummy" vCPU because the final vCPU to be
* interrupted is specified later in hv_irq_unmask() and communicated to Hyper-V
* via the HVCALL_RETARGET_INTERRUPT hypercall. But the choice of dummy vCPU is
* not irrelevant because Hyper-V chooses the physical CPU to handle the
* interrupts based on the vCPU specified in message sent to the vPCI VSP in
* hv_compose_msi_msg(). Hyper-V's choice of pCPU is not visible to the guest,
* but assigning too many vPCI device interrupts to the same pCPU can cause a
* performance bottleneck. So we spread out the dummy vCPUs to influence Hyper-V
* to spread out the pCPUs that it selects.
*
* For the single-MSI and MSI-X cases, it's OK for hv_compose_msi_req_get_cpu()
* to always return the same dummy vCPU, because a second call to
* hv_compose_msi_msg() contains the "real" vCPU, causing Hyper-V to choose a
* new pCPU for the interrupt. But for the multi-MSI case, the second call to
* hv_compose_msi_msg() exits without sending a message to the vPCI VSP, so the
* original dummy vCPU is used. This dummy vCPU must be round-robin'ed so that
* the pCPUs are spread out. All interrupts for a multi-MSI device end up using
* the same pCPU, even though the vCPUs will be spread out by later calls
* to hv_irq_unmask(), but that is the best we can do now.
*
* With Hyper-V in Nov 2022, the HVCALL_RETARGET_INTERRUPT hypercall does *not*
* cause Hyper-V to reselect the pCPU based on the specified vCPU. Such an
* enhancement is planned for a future version. With that enhancement, the
* dummy vCPU selection won't matter, and interrupts for the same multi-MSI
* device will be spread across multiple pCPUs.
*/
/*
* Create MSI w/ dummy vCPU set targeting just one vCPU, overwritten
* by subsequent retarget in hv_irq_unmask().
@ -1640,18 +1669,39 @@ static int hv_compose_msi_req_get_cpu(const struct cpumask *affinity)
return cpumask_first_and(affinity, cpu_online_mask);
}
static u32 hv_compose_msi_req_v2(
struct pci_create_interrupt2 *int_pkt, const struct cpumask *affinity,
u32 slot, u8 vector, u16 vector_count)
/*
* Make sure the dummy vCPU values for multi-MSI don't all point to vCPU0.
*/
static int hv_compose_multi_msi_req_get_cpu(void)
{
static DEFINE_SPINLOCK(multi_msi_cpu_lock);
/* -1 means starting with CPU 0 */
static int cpu_next = -1;
unsigned long flags;
int cpu;
spin_lock_irqsave(&multi_msi_cpu_lock, flags);
cpu_next = cpumask_next_wrap(cpu_next, cpu_online_mask, nr_cpu_ids,
false);
cpu = cpu_next;
spin_unlock_irqrestore(&multi_msi_cpu_lock, flags);
return cpu;
}
static u32 hv_compose_msi_req_v2(
struct pci_create_interrupt2 *int_pkt, int cpu,
u32 slot, u8 vector, u16 vector_count)
{
int_pkt->message_type.type = PCI_CREATE_INTERRUPT_MESSAGE2;
int_pkt->wslot.slot = slot;
int_pkt->int_desc.vector = vector;
int_pkt->int_desc.vector_count = vector_count;
int_pkt->int_desc.delivery_mode = DELIVERY_MODE;
cpu = hv_compose_msi_req_get_cpu(affinity);
int_pkt->int_desc.processor_array[0] =
hv_cpu_number_to_vp_number(cpu);
int_pkt->int_desc.processor_count = 1;
@ -1660,18 +1710,15 @@ static u32 hv_compose_msi_req_v2(
}
static u32 hv_compose_msi_req_v3(
struct pci_create_interrupt3 *int_pkt, const struct cpumask *affinity,
struct pci_create_interrupt3 *int_pkt, int cpu,
u32 slot, u32 vector, u16 vector_count)
{
int cpu;
int_pkt->message_type.type = PCI_CREATE_INTERRUPT_MESSAGE3;
int_pkt->wslot.slot = slot;
int_pkt->int_desc.vector = vector;
int_pkt->int_desc.reserved = 0;
int_pkt->int_desc.vector_count = vector_count;
int_pkt->int_desc.delivery_mode = DELIVERY_MODE;
cpu = hv_compose_msi_req_get_cpu(affinity);
int_pkt->int_desc.processor_array[0] =
hv_cpu_number_to_vp_number(cpu);
int_pkt->int_desc.processor_count = 1;
@ -1715,12 +1762,18 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
struct pci_create_interrupt3 v3;
} int_pkts;
} __packed ctxt;
bool multi_msi;
u64 trans_id;
u32 size;
int ret;
int cpu;
msi_desc = irq_data_get_msi_desc(data);
multi_msi = !msi_desc->pci.msi_attrib.is_msix &&
msi_desc->nvec_used > 1;
/* Reuse the previous allocation */
if (data->chip_data) {
if (data->chip_data && multi_msi) {
int_desc = data->chip_data;
msg->address_hi = int_desc->address >> 32;
msg->address_lo = int_desc->address & 0xffffffff;
@ -1728,7 +1781,6 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
return;
}
msi_desc = irq_data_get_msi_desc(data);
pdev = msi_desc_to_pci_dev(msi_desc);
dest = irq_data_get_effective_affinity_mask(data);
pbus = pdev->bus;
@ -1738,11 +1790,18 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
if (!hpdev)
goto return_null_message;
/* Free any previous message that might have already been composed. */
if (data->chip_data && !multi_msi) {
int_desc = data->chip_data;
data->chip_data = NULL;
hv_int_desc_free(hpdev, int_desc);
}
int_desc = kzalloc(sizeof(*int_desc), GFP_ATOMIC);
if (!int_desc)
goto drop_reference;
if (!msi_desc->pci.msi_attrib.is_msix && msi_desc->nvec_used > 1) {
if (multi_msi) {
/*
* If this is not the first MSI of Multi MSI, we already have
* a mapping. Can exit early.
@ -1767,9 +1826,11 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
*/
vector = 32;
vector_count = msi_desc->nvec_used;
cpu = hv_compose_multi_msi_req_get_cpu();
} else {
vector = hv_msi_get_int_vector(data);
vector_count = 1;
cpu = hv_compose_msi_req_get_cpu(dest);
}
/*
@ -1785,7 +1846,6 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
switch (hbus->protocol_version) {
case PCI_PROTOCOL_VERSION_1_1:
size = hv_compose_msi_req_v1(&ctxt.int_pkts.v1,
dest,
hpdev->desc.win_slot.slot,
(u8)vector,
vector_count);
@ -1794,7 +1854,7 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
case PCI_PROTOCOL_VERSION_1_2:
case PCI_PROTOCOL_VERSION_1_3:
size = hv_compose_msi_req_v2(&ctxt.int_pkts.v2,
dest,
cpu,
hpdev->desc.win_slot.slot,
(u8)vector,
vector_count);
@ -1802,7 +1862,7 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
case PCI_PROTOCOL_VERSION_1_4:
size = hv_compose_msi_req_v3(&ctxt.int_pkts.v3,
dest,
cpu,
hpdev->desc.win_slot.slot,
vector,
vector_count);

9
drivers/power/supply/ab8500_btemp.c
View File

@ -725,7 +725,14 @@ static int ab8500_btemp_probe(struct platform_device *pdev)
/* Get thermal zone and ADC */
di->tz = thermal_zone_get_zone_by_name("battery-thermal");
if (IS_ERR(di->tz)) {
return dev_err_probe(dev, PTR_ERR(di->tz),
ret = PTR_ERR(di->tz);
/*
* This usually just means we are probing before the thermal
* zone, so just defer.
*/
if (ret == -ENODEV)
ret = -EPROBE_DEFER;
return dev_err_probe(dev, ret,
"failed to get battery thermal zone\n");
}
di->bat_ctrl = devm_iio_channel_get(dev, "bat_ctrl");

2
drivers/power/supply/ip5xxx_power.c
View File

@ -352,7 +352,7 @@ static int ip5xxx_battery_get_property(struct power_supply *psy,
ret = ip5xxx_battery_read_adc(ip5xxx, IP5XXX_BATIADC_DAT0,
IP5XXX_BATIADC_DAT1, &raw);
val->intval = DIV_ROUND_CLOSEST(raw * 745985, 1000);
val->intval = DIV_ROUND_CLOSEST(raw * 149197, 200);
return 0;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:

14
drivers/power/supply/rk817_charger.c
View File

@ -121,7 +121,7 @@ struct rk817_charger {
#define ADC_TO_CHARGE_UAH(adc_value, res_div) \
(adc_value / 3600 * 172 / res_div)
static u8 rk817_chg_cur_to_reg(u32 chg_cur_ma)
static int rk817_chg_cur_to_reg(u32 chg_cur_ma)
{
if (chg_cur_ma >= 3500)
return CHG_3_5A;
@ -864,8 +864,8 @@ static int rk817_battery_init(struct rk817_charger *charger,
{
struct rk808 *rk808 = charger->rk808;
u32 tmp, max_chg_vol_mv, max_chg_cur_ma;
u8 max_chg_vol_reg, chg_term_i_reg, max_chg_cur_reg;
int ret, chg_term_ma;
u8 max_chg_vol_reg, chg_term_i_reg;
int ret, chg_term_ma, max_chg_cur_reg;
u8 bulk_reg[2];
/* Get initial plug state */
@ -1116,14 +1116,12 @@ static int rk817_charger_probe(struct platform_device *pdev)
charger->bat_ps = devm_power_supply_register(&pdev->dev,
&rk817_bat_desc, &pscfg);
charger->chg_ps = devm_power_supply_register(&pdev->dev,
&rk817_chg_desc, &pscfg);
if (IS_ERR(charger->chg_ps))
if (IS_ERR(charger->bat_ps))
return dev_err_probe(dev, -EINVAL,
"Battery failed to probe\n");
charger->chg_ps = devm_power_supply_register(&pdev->dev,
&rk817_chg_desc, &pscfg);
if (IS_ERR(charger->chg_ps))
return dev_err_probe(dev, -EINVAL,
"Charger failed to probe\n");

8
drivers/regulator/core.c
View File

@ -5154,6 +5154,7 @@ static void regulator_dev_release(struct device *dev)
{
struct regulator_dev *rdev = dev_get_drvdata(dev);
debugfs_remove_recursive(rdev->debugfs);
kfree(rdev->constraints);
of_node_put(rdev->dev.of_node);
kfree(rdev);
@ -5644,11 +5645,15 @@ regulator_register(const struct regulator_desc *regulator_desc,
mutex_lock(&regulator_list_mutex);
regulator_ena_gpio_free(rdev);
mutex_unlock(&regulator_list_mutex);
put_device(&rdev->dev);
rdev = NULL;
clean:
if (dangling_of_gpiod)
gpiod_put(config->ena_gpiod);
if (rdev && rdev->dev.of_node)
of_node_put(rdev->dev.of_node);
kfree(rdev);
kfree(config);
put_device(&rdev->dev);
rinse:
if (dangling_cfg_gpiod)
gpiod_put(cfg->ena_gpiod);
@ -5677,7 +5682,6 @@ void regulator_unregister(struct regulator_dev *rdev)
mutex_lock(&regulator_list_mutex);
debugfs_remove_recursive(rdev->debugfs);
WARN_ON(rdev->open_count);
regulator_remove_coupling(rdev);
unset_regulator_supplies(rdev);

1
drivers/regulator/rt5759-regulator.c
View File

@ -243,6 +243,7 @@ static int rt5759_regulator_register(struct rt5759_priv *priv)
if (priv->chip_type == CHIP_TYPE_RT5759A)
reg_desc->uV_step = RT5759A_STEP_UV;
memset(&reg_cfg, 0, sizeof(reg_cfg));
reg_cfg.dev = priv->dev;
reg_cfg.of_node = np;
reg_cfg.init_data = of_get_regulator_init_data(priv->dev, np, reg_desc);

2
drivers/regulator/slg51000-regulator.c
View File

@ -457,6 +457,8 @@ static int slg51000_i2c_probe(struct i2c_client *client)
chip->cs_gpiod = cs_gpiod;
}
usleep_range(10000, 11000);
i2c_set_clientdata(client, chip);
chip->chip_irq = client->irq;
chip->dev = dev;

17
drivers/regulator/twl6030-regulator.c
View File

@ -67,6 +67,7 @@ struct twlreg_info {
#define TWL6030_CFG_STATE_SLEEP 0x03
#define TWL6030_CFG_STATE_GRP_SHIFT 5
#define TWL6030_CFG_STATE_APP_SHIFT 2
#define TWL6030_CFG_STATE_MASK 0x03
#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
TWL6030_CFG_STATE_APP_SHIFT)
@ -128,13 +129,14 @@ static int twl6030reg_is_enabled(struct regulator_dev *rdev)
if (grp < 0)
return grp;
grp &= P1_GRP_6030;
val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
val = TWL6030_CFG_STATE_APP(val);
} else {
val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
val &= TWL6030_CFG_STATE_MASK;
grp = 1;
}
val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
val = TWL6030_CFG_STATE_APP(val);
return grp && (val == TWL6030_CFG_STATE_ON);
}
@ -187,7 +189,12 @@ static int twl6030reg_get_status(struct regulator_dev *rdev)
val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
switch (TWL6030_CFG_STATE_APP(val)) {
if (info->features & TWL6032_SUBCLASS)
val &= TWL6030_CFG_STATE_MASK;
else
val = TWL6030_CFG_STATE_APP(val);
switch (val) {
case TWL6030_CFG_STATE_ON:
return REGULATOR_STATUS_NORMAL;
@ -530,6 +537,7 @@ static const struct twlreg_info TWL6030_INFO_##label = { \
#define TWL6032_ADJUSTABLE_LDO(label, offset) \
static const struct twlreg_info TWL6032_INFO_##label = { \
.base = offset, \
.features = TWL6032_SUBCLASS, \
.desc = { \
.name = #label, \
.id = TWL6032_REG_##label, \
@ -562,6 +570,7 @@ static const struct twlreg_info TWLFIXED_INFO_##label = { \
#define TWL6032_ADJUSTABLE_SMPS(label, offset) \
static const struct twlreg_info TWLSMPS_INFO_##label = { \
.base = offset, \
.features = TWL6032_SUBCLASS, \
.desc = { \
.name = #label, \
.id = TWL6032_REG_##label, \

2
drivers/s390/block/dasd_devmap.c
View File

@ -1954,7 +1954,7 @@ dasd_copy_pair_show(struct device *dev,
break;
}
}
if (!copy->entry[i].primary)
if (i == DASD_CP_ENTRIES)
goto out;
/* print all secondary */

43
drivers/s390/block/dasd_eckd.c
View File

@ -4722,7 +4722,6 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_raw(struct dasd_device *startdev,
struct dasd_device *basedev;
struct req_iterator iter;
struct dasd_ccw_req *cqr;
unsigned int first_offs;
unsigned int trkcount;
unsigned long *idaws;
unsigned int size;
@ -4756,7 +4755,6 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_raw(struct dasd_device *startdev,
last_trk = (blk_rq_pos(req) + blk_rq_sectors(req) - 1) /
DASD_RAW_SECTORS_PER_TRACK;
trkcount = last_trk - first_trk + 1;
first_offs = 0;
if (rq_data_dir(req) == READ)
cmd = DASD_ECKD_CCW_READ_TRACK;
@ -4800,13 +4798,13 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_raw(struct dasd_device *startdev,
if (use_prefix) {
prefix_LRE(ccw++, data, first_trk, last_trk, cmd, basedev,
startdev, 1, first_offs + 1, trkcount, 0, 0);
startdev, 1, 0, trkcount, 0, 0);
} else {
define_extent(ccw++, data, first_trk, last_trk, cmd, basedev, 0);
ccw[-1].flags |= CCW_FLAG_CC;
data += sizeof(struct DE_eckd_data);
locate_record_ext(ccw++, data, first_trk, first_offs + 1,
locate_record_ext(ccw++, data, first_trk, 0,
trkcount, cmd, basedev, 0, 0);
}
@ -5500,7 +5498,7 @@ dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp)
* Dump the range of CCWs into 'page' buffer
* and return number of printed chars.
*/
static int
static void
dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page)
{
int len, count;
@ -5518,16 +5516,21 @@ dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page)
else
datap = (char *) ((addr_t) from->cda);
/* dump data (max 32 bytes) */
for (count = 0; count < from->count && count < 32; count++) {
if (count % 8 == 0) len += sprintf(page + len, " ");
if (count % 4 == 0) len += sprintf(page + len, " ");
/* dump data (max 128 bytes) */
for (count = 0; count < from->count && count < 128; count++) {
if (count % 32 == 0)
len += sprintf(page + len, "\n");
if (count % 8 == 0)
len += sprintf(page + len, " ");
if (count % 4 == 0)
len += sprintf(page + len, " ");
len += sprintf(page + len, "%02x", datap[count]);
}
len += sprintf(page + len, "\n");
from++;
}
return len;
if (len > 0)
printk(KERN_ERR "%s", page);
}
static void
@ -5619,37 +5622,33 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device,
if (req) {
/* req == NULL for unsolicited interrupts */
/* dump the Channel Program (max 140 Bytes per line) */
/* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */
/* Count CCW and print first CCWs (maximum 7) */
first = req->cpaddr;
for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
to = min(first + 6, last);
len = sprintf(page, PRINTK_HEADER
" Related CP in req: %p\n", req);
dasd_eckd_dump_ccw_range(first, to, page + len);
printk(KERN_ERR "%s", page);
printk(KERN_ERR PRINTK_HEADER " Related CP in req: %p\n", req);
dasd_eckd_dump_ccw_range(first, to, page);
/* print failing CCW area (maximum 4) */
/* scsw->cda is either valid or zero */
len = 0;
from = ++to;
fail = (struct ccw1 *)(addr_t)
irb->scsw.cmd.cpa; /* failing CCW */
if (from < fail - 2) {
from = fail - 2; /* there is a gap - print header */
len += sprintf(page, PRINTK_HEADER "......\n");
printk(KERN_ERR PRINTK_HEADER "......\n");
}
to = min(fail + 1, last);
len += dasd_eckd_dump_ccw_range(from, to, page + len);
dasd_eckd_dump_ccw_range(from, to, page + len);
/* print last CCWs (maximum 2) */
len = 0;
from = max(from, ++to);
if (from < last - 1) {
from = last - 1; /* there is a gap - print header */
len += sprintf(page + len, PRINTK_HEADER "......\n");
printk(KERN_ERR PRINTK_HEADER "......\n");
}
len += dasd_eckd_dump_ccw_range(from, last, page + len);
if (len > 0)
printk(KERN_ERR "%s", page);
dasd_eckd_dump_ccw_range(from, last, page + len);
}
free_page((unsigned long) page);
}

2
drivers/s390/block/dasd_ioctl.c
View File

@ -401,7 +401,7 @@ dasd_ioctl_copy_pair_swap(struct block_device *bdev, void __user *argp)
return -EFAULT;
}
if (memchr_inv(data.reserved, 0, sizeof(data.reserved))) {
pr_warn("%s: Ivalid swap data specified.\n",
pr_warn("%s: Invalid swap data specified\n",
dev_name(&device->cdev->dev));
dasd_put_device(device);
return DASD_COPYPAIRSWAP_INVALID;

5
drivers/s390/crypto/ap_bus.c
View File

@ -233,8 +233,11 @@ static void __init ap_init_qci_info(void)
if (!ap_qci_info)
return;
ap_qci_info_old = kzalloc(sizeof(*ap_qci_info_old), GFP_KERNEL);
if (!ap_qci_info_old)
if (!ap_qci_info_old) {
kfree(ap_qci_info);
ap_qci_info = NULL;
return;
}
if (ap_fetch_qci_info(ap_qci_info) != 0) {
kfree(ap_qci_info);
kfree(ap_qci_info_old);

69
drivers/scsi/storvsc_drv.c
View File

@ -303,16 +303,21 @@ enum storvsc_request_type {
};
/*
* SRB status codes and masks; a subset of the codes used here.
* SRB status codes and masks. In the 8-bit field, the two high order bits
* are flags, while the remaining 6 bits are an integer status code. The
* definitions here include only the subset of the integer status codes that
* are tested for in this driver.
*/
#define SRB_STATUS_AUTOSENSE_VALID 0x80
#define SRB_STATUS_QUEUE_FROZEN 0x40
#define SRB_STATUS_INVALID_LUN 0x20
#define SRB_STATUS_SUCCESS 0x01
#define SRB_STATUS_ABORTED 0x02
#define SRB_STATUS_ERROR 0x04
#define SRB_STATUS_DATA_OVERRUN 0x12
/* SRB status integer codes */
#define SRB_STATUS_SUCCESS 0x01
#define SRB_STATUS_ABORTED 0x02
#define SRB_STATUS_ERROR 0x04
#define SRB_STATUS_INVALID_REQUEST 0x06
#define SRB_STATUS_DATA_OVERRUN 0x12
#define SRB_STATUS_INVALID_LUN 0x20
#define SRB_STATUS(status) \
(status & ~(SRB_STATUS_AUTOSENSE_VALID | SRB_STATUS_QUEUE_FROZEN))
@ -969,38 +974,25 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb,
void (*process_err_fn)(struct work_struct *work);
struct hv_host_device *host_dev = shost_priv(host);
/*
* In some situations, Hyper-V sets multiple bits in the
* srb_status, such as ABORTED and ERROR. So process them
* individually, with the most specific bits first.
*/
switch (SRB_STATUS(vm_srb->srb_status)) {
case SRB_STATUS_ERROR:
case SRB_STATUS_ABORTED:
case SRB_STATUS_INVALID_REQUEST:
if (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID) {
/* Check for capacity change */
if ((asc == 0x2a) && (ascq == 0x9)) {
process_err_fn = storvsc_device_scan;
/* Retry the I/O that triggered this. */
set_host_byte(scmnd, DID_REQUEUE);
goto do_work;
}
if (vm_srb->srb_status & SRB_STATUS_INVALID_LUN) {
set_host_byte(scmnd, DID_NO_CONNECT);
process_err_fn = storvsc_remove_lun;
goto do_work;
}
if (vm_srb->srb_status & SRB_STATUS_ABORTED) {
if (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID &&
/* Capacity data has changed */
(asc == 0x2a) && (ascq == 0x9)) {
process_err_fn = storvsc_device_scan;
/*
* Retry the I/O that triggered this.
* Otherwise, let upper layer deal with the
* error when sense message is present
*/
set_host_byte(scmnd, DID_REQUEUE);
goto do_work;
}
}
if (vm_srb->srb_status & SRB_STATUS_ERROR) {
/*
* Let upper layer deal with error when
* sense message is present.
*/
if (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID)
return;
}
/*
* If there is an error; offline the device since all
@ -1023,6 +1015,13 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb,
default:
set_host_byte(scmnd, DID_ERROR);
}
return;
case SRB_STATUS_INVALID_LUN:
set_host_byte(scmnd, DID_NO_CONNECT);
process_err_fn = storvsc_remove_lun;
goto do_work;
}
return;

12
drivers/usb/cdns3/cdnsp-gadget.c
View File

@ -600,11 +600,11 @@ int cdnsp_halt_endpoint(struct cdnsp_device *pdev,
trace_cdnsp_ep_halt(value ? "Set" : "Clear");
if (value) {
ret = cdnsp_cmd_stop_ep(pdev, pep);
if (ret)
return ret;
ret = cdnsp_cmd_stop_ep(pdev, pep);
if (ret)
return ret;
if (value) {
if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_STOPPED) {
cdnsp_queue_halt_endpoint(pdev, pep->idx);
cdnsp_ring_cmd_db(pdev);
@ -613,10 +613,6 @@ int cdnsp_halt_endpoint(struct cdnsp_device *pdev,
pep->ep_state |= EP_HALTED;
} else {
/*
* In device mode driver can call reset endpoint command
* from any endpoint state.
*/
cdnsp_queue_reset_ep(pdev, pep->idx);
cdnsp_ring_cmd_db(pdev);
ret = cdnsp_wait_for_cmd_compl(pdev);

17
drivers/usb/cdns3/cdnsp-ring.c
View File

@ -1763,10 +1763,15 @@ static u32 cdnsp_td_remainder(struct cdnsp_device *pdev,
int trb_buff_len,
unsigned int td_total_len,
struct cdnsp_request *preq,
bool more_trbs_coming)
bool more_trbs_coming,
bool zlp)
{
u32 maxp, total_packet_count;
/* Before ZLP driver needs set TD_SIZE = 1. */
if (zlp)
return 1;
/* One TRB with a zero-length data packet. */
if (!more_trbs_coming || (transferred == 0 && trb_buff_len == 0) ||
trb_buff_len == td_total_len)
@ -1960,7 +1965,8 @@ int cdnsp_queue_bulk_tx(struct cdnsp_device *pdev, struct cdnsp_request *preq)
/* Set the TRB length, TD size, and interrupter fields. */
remainder = cdnsp_td_remainder(pdev, enqd_len, trb_buff_len,
full_len, preq,
more_trbs_coming);
more_trbs_coming,
zero_len_trb);
length_field = TRB_LEN(trb_buff_len) | TRB_TD_SIZE(remainder) |
TRB_INTR_TARGET(0);
@ -2025,7 +2031,7 @@ int cdnsp_queue_ctrl_tx(struct cdnsp_device *pdev, struct cdnsp_request *preq)
if (preq->request.length > 0) {
remainder = cdnsp_td_remainder(pdev, 0, preq->request.length,
preq->request.length, preq, 1);
preq->request.length, preq, 1, 0);
length_field = TRB_LEN(preq->request.length) |
TRB_TD_SIZE(remainder) | TRB_INTR_TARGET(0);
@ -2076,7 +2082,8 @@ int cdnsp_cmd_stop_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
u32 ep_state = GET_EP_CTX_STATE(pep->out_ctx);
int ret = 0;
if (ep_state == EP_STATE_STOPPED || ep_state == EP_STATE_DISABLED) {
if (ep_state == EP_STATE_STOPPED || ep_state == EP_STATE_DISABLED ||
ep_state == EP_STATE_HALTED) {
trace_cdnsp_ep_stopped_or_disabled(pep->out_ctx);
goto ep_stopped;
}
@ -2225,7 +2232,7 @@ static int cdnsp_queue_isoc_tx(struct cdnsp_device *pdev,
/* Set the TRB length, TD size, & interrupter fields. */
remainder = cdnsp_td_remainder(pdev, running_total,
trb_buff_len, td_len, preq,
more_trbs_coming);
more_trbs_coming, 0);
length_field = TRB_LEN(trb_buff_len) | TRB_INTR_TARGET(0);

11
drivers/usb/dwc3/dwc3-exynos.c
View File

@ -37,15 +37,6 @@ struct dwc3_exynos {
struct regulator *vdd10;
};
static int dwc3_exynos_remove_child(struct device *dev, void *unused)
{
struct platform_device *pdev = to_platform_device(dev);
platform_device_unregister(pdev);
return 0;
}
static int dwc3_exynos_probe(struct platform_device *pdev)
{
struct dwc3_exynos *exynos;
@ -142,7 +133,7 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
struct dwc3_exynos *exynos = platform_get_drvdata(pdev);
int i;
device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child);
of_platform_depopulate(&pdev->dev);
for (i = exynos->num_clks - 1; i >= 0; i--)
clk_disable_unprepare(exynos->clks[i]);

15
drivers/usb/dwc3/gadget.c
View File

@ -291,7 +291,8 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
*
* DWC_usb3 3.30a and DWC_usb31 1.90a programming guide section 3.2.2
*/
if (dwc->gadget->speed <= USB_SPEED_HIGH) {
if (dwc->gadget->speed <= USB_SPEED_HIGH ||
DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_ENDTRANSFER) {
reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
if (unlikely(reg & DWC3_GUSB2PHYCFG_SUSPHY)) {
saved_config |= DWC3_GUSB2PHYCFG_SUSPHY;
@ -1023,12 +1024,6 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
reg &= ~DWC3_DALEPENA_EP(dep->number);
dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);
/* Clear out the ep descriptors for non-ep0 */
if (dep->number > 1) {
dep->endpoint.comp_desc = NULL;
dep->endpoint.desc = NULL;
}
dwc3_remove_requests(dwc, dep, -ESHUTDOWN);
dep->stream_capable = false;
@ -1043,6 +1038,12 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
mask |= (DWC3_EP_DELAY_STOP | DWC3_EP_TRANSFER_STARTED);
dep->flags &= mask;
/* Clear out the ep descriptors for non-ep0 */
if (dep->number > 1) {
dep->endpoint.comp_desc = NULL;
dep->endpoint.desc = NULL;
}
return 0;
}

72
drivers/usb/gadget/function/uvc_v4l2.c
View File

@ -199,16 +199,6 @@ uvc_send_response(struct uvc_device *uvc, struct uvc_request_data *data)
* V4L2 ioctls
*/
struct uvc_format {
u8 bpp;
u32 fcc;
};
static struct uvc_format uvc_formats[] = {
{ 16, V4L2_PIX_FMT_YUYV },
{ 0, V4L2_PIX_FMT_MJPEG },
};
static int
uvc_v4l2_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
{
@ -242,47 +232,6 @@ uvc_v4l2_get_format(struct file *file, void *fh, struct v4l2_format *fmt)
return 0;
}
static int
uvc_v4l2_set_format(struct file *file, void *fh, struct v4l2_format *fmt)
{
struct video_device *vdev = video_devdata(file);
struct uvc_device *uvc = video_get_drvdata(vdev);
struct uvc_video *video = &uvc->video;
struct uvc_format *format;
unsigned int imagesize;
unsigned int bpl;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(uvc_formats); ++i) {
format = &uvc_formats[i];
if (format->fcc == fmt->fmt.pix.pixelformat)
break;
}
if (i == ARRAY_SIZE(uvc_formats)) {
uvcg_info(&uvc->func, "Unsupported format 0x%08x.\n",
fmt->fmt.pix.pixelformat);
return -EINVAL;
}
bpl = format->bpp * fmt->fmt.pix.width / 8;
imagesize = bpl ? bpl * fmt->fmt.pix.height : fmt->fmt.pix.sizeimage;
video->fcc = format->fcc;
video->bpp = format->bpp;
video->width = fmt->fmt.pix.width;
video->height = fmt->fmt.pix.height;
video->imagesize = imagesize;
fmt->fmt.pix.field = V4L2_FIELD_NONE;
fmt->fmt.pix.bytesperline = bpl;
fmt->fmt.pix.sizeimage = imagesize;
fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
fmt->fmt.pix.priv = 0;
return 0;
}
static int
uvc_v4l2_try_format(struct file *file, void *fh, struct v4l2_format *fmt)
{
@ -323,6 +272,27 @@ uvc_v4l2_try_format(struct file *file, void *fh, struct v4l2_format *fmt)
return 0;
}
static int
uvc_v4l2_set_format(struct file *file, void *fh, struct v4l2_format *fmt)
{
struct video_device *vdev = video_devdata(file);
struct uvc_device *uvc = video_get_drvdata(vdev);
struct uvc_video *video = &uvc->video;
int ret;
ret = uvc_v4l2_try_format(file, fh, fmt);
if (ret)
return ret;
video->fcc = fmt->fmt.pix.pixelformat;
video->bpp = fmt->fmt.pix.bytesperline * 8 / video->width;
video->width = fmt->fmt.pix.width;
video->height = fmt->fmt.pix.height;
video->imagesize = fmt->fmt.pix.sizeimage;
return ret;
}
static int
uvc_v4l2_enum_frameintervals(struct file *file, void *fh,
struct v4l2_frmivalenum *fival)

84
drivers/virt/coco/sev-guest/sev-guest.c
View File

@ -67,8 +67,27 @@ static bool is_vmpck_empty(struct snp_guest_dev *snp_dev)
return true;
}
/*
* If an error is received from the host or AMD Secure Processor (ASP) there
* are two options. Either retry the exact same encrypted request or discontinue
* using the VMPCK.
*
* This is because in the current encryption scheme GHCB v2 uses AES-GCM to
* encrypt the requests. The IV for this scheme is the sequence number. GCM
* cannot tolerate IV reuse.
*
* The ASP FW v1.51 only increments the sequence numbers on a successful
* guest<->ASP back and forth and only accepts messages at its exact sequence
* number.
*
* So if the sequence number were to be reused the encryption scheme is
* vulnerable. If the sequence number were incremented for a fresh IV the ASP
* will reject the request.
*/
static void snp_disable_vmpck(struct snp_guest_dev *snp_dev)
{
dev_alert(snp_dev->dev, "Disabling vmpck_id %d to prevent IV reuse.\n",
vmpck_id);
memzero_explicit(snp_dev->vmpck, VMPCK_KEY_LEN);
snp_dev->vmpck = NULL;
}
@ -321,34 +340,71 @@ static int handle_guest_request(struct snp_guest_dev *snp_dev, u64 exit_code, in
if (rc)
return rc;
/* Call firmware to process the request */
/*
* Call firmware to process the request. In this function the encrypted
* message enters shared memory with the host. So after this call the
* sequence number must be incremented or the VMPCK must be deleted to
* prevent reuse of the IV.
*/
rc = snp_issue_guest_request(exit_code, &snp_dev->input, &err);
/*
* If the extended guest request fails due to having too small of a
* certificate data buffer, retry the same guest request without the
* extended data request in order to increment the sequence number
* and thus avoid IV reuse.
*/
if (exit_code == SVM_VMGEXIT_EXT_GUEST_REQUEST &&
err == SNP_GUEST_REQ_INVALID_LEN) {
const unsigned int certs_npages = snp_dev->input.data_npages;
exit_code = SVM_VMGEXIT_GUEST_REQUEST;
/*
* If this call to the firmware succeeds, the sequence number can
* be incremented allowing for continued use of the VMPCK. If
* there is an error reflected in the return value, this value
* is checked further down and the result will be the deletion
* of the VMPCK and the error code being propagated back to the
* user as an ioctl() return code.
*/
rc = snp_issue_guest_request(exit_code, &snp_dev->input, &err);
/*
* Override the error to inform callers the given extended
* request buffer size was too small and give the caller the
* required buffer size.
*/
err = SNP_GUEST_REQ_INVALID_LEN;
snp_dev->input.data_npages = certs_npages;
}
if (fw_err)
*fw_err = err;
if (rc)
return rc;
if (rc) {
dev_alert(snp_dev->dev,
"Detected error from ASP request. rc: %d, fw_err: %llu\n",
rc, *fw_err);
goto disable_vmpck;
}
/*
* The verify_and_dec_payload() will fail only if the hypervisor is
* actively modifying the message header or corrupting the encrypted payload.
* This hints that hypervisor is acting in a bad faith. Disable the VMPCK so that
* the key cannot be used for any communication. The key is disabled to ensure
* that AES-GCM does not use the same IV while encrypting the request payload.
*/
rc = verify_and_dec_payload(snp_dev, resp_buf, resp_sz);
if (rc) {
dev_alert(snp_dev->dev,
"Detected unexpected decode failure, disabling the vmpck_id %d\n",
vmpck_id);
snp_disable_vmpck(snp_dev);
return rc;
"Detected unexpected decode failure from ASP. rc: %d\n",
rc);
goto disable_vmpck;
}
/* Increment to new message sequence after payload decryption was successful. */
snp_inc_msg_seqno(snp_dev);
return 0;
disable_vmpck:
snp_disable_vmpck(snp_dev);
return rc;
}
static int get_report(struct snp_guest_dev *snp_dev, struct snp_guest_request_ioctl *arg)

36
fs/btrfs/ctree.c
View File

@ -4663,7 +4663,12 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
int ret;
int i;
ASSERT(!path->nowait);
/*
* The nowait semantics are used only for write paths, where we don't
* use the tree mod log and sequence numbers.
*/
if (time_seq)
ASSERT(!path->nowait);
nritems = btrfs_header_nritems(path->nodes[0]);
if (nritems == 0)
@ -4683,7 +4688,14 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
if (path->need_commit_sem) {
path->need_commit_sem = 0;
need_commit_sem = true;
down_read(&fs_info->commit_root_sem);
if (path->nowait) {
if (!down_read_trylock(&fs_info->commit_root_sem)) {
ret = -EAGAIN;
goto done;
}
} else {
down_read(&fs_info->commit_root_sem);
}
}
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
}
@ -4759,7 +4771,7 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
next = c;
ret = read_block_for_search(root, path, &next, level,
slot, &key);
if (ret == -EAGAIN)
if (ret == -EAGAIN && !path->nowait)
goto again;
if (ret < 0) {
@ -4769,6 +4781,10 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
if (!path->skip_locking) {
ret = btrfs_try_tree_read_lock(next);
if (!ret && path->nowait) {
ret = -EAGAIN;
goto done;
}
if (!ret && time_seq) {
/*
* If we don't get the lock, we may be racing
@ -4799,7 +4815,7 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
ret = read_block_for_search(root, path, &next, level,
0, &key);
if (ret == -EAGAIN)
if (ret == -EAGAIN && !path->nowait)
goto again;
if (ret < 0) {
@ -4807,8 +4823,16 @@ int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path,
goto done;
}
if (!path->skip_locking)
btrfs_tree_read_lock(next);
if (!path->skip_locking) {
if (path->nowait) {
if (!btrfs_try_tree_read_lock(next)) {
ret = -EAGAIN;
goto done;
}
} else {
btrfs_tree_read_lock(next);
}
}
}
ret = 0;
done:

23
fs/btrfs/ioctl.c
View File

@ -3105,6 +3105,8 @@ static int btrfs_ioctl_get_subvol_info(struct inode *inode, void __user *argp)
}
}
btrfs_free_path(path);
path = NULL;
if (copy_to_user(argp, subvol_info, sizeof(*subvol_info)))
ret = -EFAULT;
@ -3194,6 +3196,8 @@ static int btrfs_ioctl_get_subvol_rootref(struct btrfs_root *root,
}
out:
btrfs_free_path(path);
if (!ret || ret == -EOVERFLOW) {
rootrefs->num_items = found;
/* update min_treeid for next search */
@ -3205,7 +3209,6 @@ static int btrfs_ioctl_get_subvol_rootref(struct btrfs_root *root,
}
kfree(rootrefs);
btrfs_free_path(path);
return ret;
}
@ -4231,6 +4234,8 @@ static long btrfs_ioctl_ino_to_path(struct btrfs_root *root, void __user *arg)
ipath->fspath->val[i] = rel_ptr;
}
btrfs_free_path(path);
path = NULL;
ret = copy_to_user((void __user *)(unsigned long)ipa->fspath,
ipath->fspath, size);
if (ret) {
@ -4281,21 +4286,20 @@ static long btrfs_ioctl_logical_to_ino(struct btrfs_fs_info *fs_info,
size = min_t(u32, loi->size, SZ_16M);
}
inodes = init_data_container(size);
if (IS_ERR(inodes)) {
ret = PTR_ERR(inodes);
goto out_loi;
}
path = btrfs_alloc_path();
if (!path) {
ret = -ENOMEM;
goto out;
}
inodes = init_data_container(size);
if (IS_ERR(inodes)) {
ret = PTR_ERR(inodes);
inodes = NULL;
goto out;
}
ret = iterate_inodes_from_logical(loi->logical, fs_info, path,
inodes, ignore_offset);
btrfs_free_path(path);
if (ret == -EINVAL)
ret = -ENOENT;
if (ret < 0)
@ -4307,7 +4311,6 @@ static long btrfs_ioctl_logical_to_ino(struct btrfs_fs_info *fs_info,
ret = -EFAULT;
out:
btrfs_free_path(path);
kvfree(inodes);
out_loi:
kfree(loi);

9
fs/btrfs/qgroup.c
View File

@ -2951,14 +2951,7 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, u64 srcid,
dstgroup->rsv_rfer = inherit->lim.rsv_rfer;
dstgroup->rsv_excl = inherit->lim.rsv_excl;
ret = update_qgroup_limit_item(trans, dstgroup);
if (ret) {
qgroup_mark_inconsistent(fs_info);
btrfs_info(fs_info,
"unable to update quota limit for %llu",
dstgroup->qgroupid);
goto unlock;
}
qgroup_dirty(fs_info, dstgroup);
}
if (srcid) {

24
fs/btrfs/send.c
View File

@ -5702,6 +5702,7 @@ static int clone_range(struct send_ctx *sctx, struct btrfs_path *dst_path,
u64 ext_len;
u64 clone_len;
u64 clone_data_offset;
bool crossed_src_i_size = false;
if (slot >= btrfs_header_nritems(leaf)) {
ret = btrfs_next_leaf(clone_root->root, path);
@ -5759,8 +5760,10 @@ static int clone_range(struct send_ctx *sctx, struct btrfs_path *dst_path,
if (key.offset >= clone_src_i_size)
break;
if (key.offset + ext_len > clone_src_i_size)
if (key.offset + ext_len > clone_src_i_size) {
ext_len = clone_src_i_size - key.offset;
crossed_src_i_size = true;
}
clone_data_offset = btrfs_file_extent_offset(leaf, ei);
if (btrfs_file_extent_disk_bytenr(leaf, ei) == disk_byte) {
@ -5821,6 +5824,25 @@ static int clone_range(struct send_ctx *sctx, struct btrfs_path *dst_path,
ret = send_clone(sctx, offset, clone_len,
clone_root);
}
} else if (crossed_src_i_size && clone_len < len) {
/*
* If we are at i_size of the clone source inode and we
* can not clone from it, terminate the loop. This is
* to avoid sending two write operations, one with a
* length matching clone_len and the final one after
* this loop with a length of len - clone_len.
*
* When using encoded writes (BTRFS_SEND_FLAG_COMPRESSED
* was passed to the send ioctl), this helps avoid
* sending an encoded write for an offset that is not
* sector size aligned, in case the i_size of the source
* inode is not sector size aligned. That will make the
* receiver fallback to decompression of the data and
* writing it using regular buffered IO, therefore while
* not incorrect, it's not optimal due decompression and
* possible re-compression at the receiver.
*/
break;
} else {
ret = send_extent_data(sctx, dst_path, offset,
clone_len);

7
fs/btrfs/sysfs.c
View File

@ -2321,8 +2321,11 @@ int __init btrfs_init_sysfs(void)
#ifdef CONFIG_BTRFS_DEBUG
ret = sysfs_create_group(&btrfs_kset->kobj, &btrfs_debug_feature_attr_group);
if (ret)
goto out2;
if (ret) {
sysfs_unmerge_group(&btrfs_kset->kobj,
&btrfs_static_feature_attr_group);
goto out_remove_group;
}
#endif
return 0;

59
fs/btrfs/tree-log.c
View File

@ -3694,15 +3694,29 @@ static int process_dir_items_leaf(struct btrfs_trans_handle *trans,
u64 *last_old_dentry_offset)
{
struct btrfs_root *log = inode->root->log_root;
struct extent_buffer *src = path->nodes[0];
const int nritems = btrfs_header_nritems(src);
struct extent_buffer *src;
const int nritems = btrfs_header_nritems(path->nodes[0]);
const u64 ino = btrfs_ino(inode);
bool last_found = false;
int batch_start = 0;
int batch_size = 0;
int i;
for (i = path->slots[0]; i < nritems; i++) {
/*
* We need to clone the leaf, release the read lock on it, and use the
* clone before modifying the log tree. See the comment at copy_items()
* about why we need to do this.
*/
src = btrfs_clone_extent_buffer(path->nodes[0]);
if (!src)
return -ENOMEM;
i = path->slots[0];
btrfs_release_path(path);
path->nodes[0] = src;
path->slots[0] = i;
for (; i < nritems; i++) {
struct btrfs_dir_item *di;
struct btrfs_key key;
int ret;
@ -4303,7 +4317,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
{
struct btrfs_root *log = inode->root->log_root;
struct btrfs_file_extent_item *extent;
struct extent_buffer *src = src_path->nodes[0];
struct extent_buffer *src;
int ret = 0;
struct btrfs_key *ins_keys;
u32 *ins_sizes;
@ -4314,6 +4328,43 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
const bool skip_csum = (inode->flags & BTRFS_INODE_NODATASUM);
const u64 i_size = i_size_read(&inode->vfs_inode);
/*
* To keep lockdep happy and avoid deadlocks, clone the source leaf and
* use the clone. This is because otherwise we would be changing the log
* tree, to insert items from the subvolume tree or insert csum items,
* while holding a read lock on a leaf from the subvolume tree, which
* creates a nasty lock dependency when COWing log tree nodes/leaves:
*
* 1) Modifying the log tree triggers an extent buffer allocation while
* holding a write lock on a parent extent buffer from the log tree.
* Allocating the pages for an extent buffer, or the extent buffer
* struct, can trigger inode eviction and finally the inode eviction
* will trigger a release/remove of a delayed node, which requires
* taking the delayed node's mutex;
*
* 2) Allocating a metadata extent for a log tree can trigger the async
* reclaim thread and make us wait for it to release enough space and
* unblock our reservation ticket. The reclaim thread can start
* flushing delayed items, and that in turn results in the need to
* lock delayed node mutexes and in the need to write lock extent
* buffers of a subvolume tree - all this while holding a write lock
* on the parent extent buffer in the log tree.
*
* So one task in scenario 1) running in parallel with another task in
* scenario 2) could lead to a deadlock, one wanting to lock a delayed
* node mutex while having a read lock on a leaf from the subvolume,
* while the other is holding the delayed node's mutex and wants to
* write lock the same subvolume leaf for flushing delayed items.
*/
src = btrfs_clone_extent_buffer(src_path->nodes[0]);
if (!src)
return -ENOMEM;
i = src_path->slots[0];
btrfs_release_path(src_path);
src_path->nodes[0] = src;
src_path->slots[0] = i;
ins_data = kmalloc(nr * sizeof(struct btrfs_key) +
nr * sizeof(u32), GFP_NOFS);
if (!ins_data)

9
fs/btrfs/zoned.c
View File

@ -134,7 +134,8 @@ static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zones,
super[i] = page_address(page[i]);
}
if (super[0]->generation > super[1]->generation)
if (btrfs_super_generation(super[0]) >
btrfs_super_generation(super[1]))
sector = zones[1].start;
else
sector = zones[0].start;
@ -466,7 +467,7 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache)
goto out;
}
zones = kcalloc(BTRFS_REPORT_NR_ZONES, sizeof(struct blk_zone), GFP_KERNEL);
zones = kvcalloc(BTRFS_REPORT_NR_ZONES, sizeof(struct blk_zone), GFP_KERNEL);
if (!zones) {
ret = -ENOMEM;
goto out;
@ -585,7 +586,7 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache)
}
kfree(zones);
kvfree(zones);
switch (bdev_zoned_model(bdev)) {
case BLK_ZONED_HM:
@ -617,7 +618,7 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache)
return 0;
out:
kfree(zones);
kvfree(zones);
out_free_zone_info:
btrfs_destroy_dev_zone_info(device);

4
fs/cifs/cifsfs.c
View File

@ -1281,7 +1281,7 @@ ssize_t cifs_file_copychunk_range(unsigned int xid,
rc = filemap_write_and_wait_range(src_inode->i_mapping, off,
off + len - 1);
if (rc)
goto out;
goto unlock;
/* should we flush first and last page first */
truncate_inode_pages(&target_inode->i_data, 0);
@ -1297,6 +1297,8 @@ ssize_t cifs_file_copychunk_range(unsigned int xid,
* that target is updated on the server
*/
CIFS_I(target_inode)->time = 0;
unlock:
/* although unlocking in the reverse order from locking is not
* strictly necessary here it is a little cleaner to be consistent
*/

4
fs/cifs/sess.c
View File

@ -302,14 +302,14 @@ cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
/* now drop the ref to the current iface */
if (old_iface && iface) {
kref_put(&old_iface->refcount, release_iface);
cifs_dbg(FYI, "replacing iface: %pIS with %pIS\n",
&old_iface->sockaddr,
&iface->sockaddr);
} else if (old_iface) {
kref_put(&old_iface->refcount, release_iface);
} else if (old_iface) {
cifs_dbg(FYI, "releasing ref to iface: %pIS\n",
&old_iface->sockaddr);
kref_put(&old_iface->refcount, release_iface);
} else {
WARN_ON(!iface);
cifs_dbg(FYI, "adding new iface: %pIS\n", &iface->sockaddr);

11
fs/file.c
View File

@ -1003,7 +1003,16 @@ static unsigned long __fget_light(unsigned int fd, fmode_t mask)
struct files_struct *files = current->files;
struct file *file;
if (atomic_read(&files->count) == 1) {
/*
* If another thread is concurrently calling close_fd() followed
* by put_files_struct(), we must not observe the old table
* entry combined with the new refcount - otherwise we could
* return a file that is concurrently being freed.
*
* atomic_read_acquire() pairs with atomic_dec_and_test() in
* put_files_struct().
*/
if (atomic_read_acquire(&files->count) == 1) {
file = files_lookup_fd_raw(files, fd);
if (!file || unlikely(file->f_mode & mask))
return 0;

6
fs/ksmbd/vfs.c
View File

@ -1794,9 +1794,9 @@ int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work,
ret = vfs_copy_file_range(src_fp->filp, src_off,
dst_fp->filp, dst_off, len, 0);
if (ret == -EOPNOTSUPP || ret == -EXDEV)
ret = generic_copy_file_range(src_fp->filp, src_off,
dst_fp->filp, dst_off,
len, 0);
ret = vfs_copy_file_range(src_fp->filp, src_off,
dst_fp->filp, dst_off, len,
COPY_FILE_SPLICE);
if (ret < 0)
return ret;

3
fs/namei.c
View File

@ -3591,6 +3591,7 @@ static int vfs_tmpfile(struct user_namespace *mnt_userns,
struct inode *dir = d_inode(parentpath->dentry);
struct inode *inode;
int error;
int open_flag = file->f_flags;
/* we want directory to be writable */
error = inode_permission(mnt_userns, dir, MAY_WRITE | MAY_EXEC);
@ -3613,7 +3614,7 @@ static int vfs_tmpfile(struct user_namespace *mnt_userns,
if (error)
return error;
inode = file_inode(file);
if (!(file->f_flags & O_EXCL)) {
if (!(open_flag & O_EXCL)) {
spin_lock(&inode->i_lock);
inode->i_state |= I_LINKABLE;
spin_unlock(&inode->i_lock);

11
fs/nfsd/vfs.c
View File

@ -596,8 +596,8 @@ ssize_t nfsd_copy_file_range(struct file *src, u64 src_pos, struct file *dst,
ret = vfs_copy_file_range(src, src_pos, dst, dst_pos, count, 0);
if (ret == -EOPNOTSUPP || ret == -EXDEV)
ret = generic_copy_file_range(src, src_pos, dst, dst_pos,
count, 0);
ret = vfs_copy_file_range(src, src_pos, dst, dst_pos, count,
COPY_FILE_SPLICE);
return ret;
}
@ -871,10 +871,11 @@ nfsd_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
struct svc_rqst *rqstp = sd->u.data;
struct page *page = buf->page; // may be a compound one
unsigned offset = buf->offset;
struct page *last_page;
page += offset / PAGE_SIZE;
for (int i = sd->len; i > 0; i -= PAGE_SIZE)
svc_rqst_replace_page(rqstp, page++);
last_page = page + (offset + sd->len - 1) / PAGE_SIZE;
for (page += offset / PAGE_SIZE; page <= last_page; page++)
svc_rqst_replace_page(rqstp, page);
if (rqstp->rq_res.page_len == 0) // first call
rqstp->rq_res.page_base = offset % PAGE_SIZE;
rqstp->rq_res.page_len += sd->len;

8
fs/nilfs2/sufile.c
View File

@ -495,14 +495,22 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 segnum,
int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum)
{
struct buffer_head *bh;
void *kaddr;
struct nilfs_segment_usage *su;
int ret;
down_write(&NILFS_MDT(sufile)->mi_sem);
ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 0, &bh);
if (!ret) {
mark_buffer_dirty(bh);
nilfs_mdt_mark_dirty(sufile);
kaddr = kmap_atomic(bh->b_page);
su = nilfs_sufile_block_get_segment_usage(sufile, segnum, bh, kaddr);
nilfs_segment_usage_set_dirty(su);
kunmap_atomic(kaddr);
brelse(bh);
}
up_write(&NILFS_MDT(sufile)->mi_sem);
return ret;
}

2
fs/proc/meminfo.c
View File

@ -115,7 +115,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
#endif
show_val_kb(m, "PageTables: ",
global_node_page_state(NR_PAGETABLE));
show_val_kb(m, "SecPageTables: ",
show_val_kb(m, "SecPageTables: ",
global_node_page_state(NR_SECONDARY_PAGETABLE));
show_val_kb(m, "NFS_Unstable: ", 0);

19
fs/read_write.c
View File

@ -1388,6 +1388,8 @@ ssize_t generic_copy_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
size_t len, unsigned int flags)
{
lockdep_assert(sb_write_started(file_inode(file_out)->i_sb));
return do_splice_direct(file_in, &pos_in, file_out, &pos_out,
len > MAX_RW_COUNT ? MAX_RW_COUNT : len, 0);
}
@ -1424,7 +1426,9 @@ static int generic_copy_file_checks(struct file *file_in, loff_t pos_in,
* and several different sets of file_operations, but they all end up
* using the same ->copy_file_range() function pointer.
*/
if (file_out->f_op->copy_file_range) {
if (flags & COPY_FILE_SPLICE) {
/* cross sb splice is allowed */
} else if (file_out->f_op->copy_file_range) {
if (file_in->f_op->copy_file_range !=
file_out->f_op->copy_file_range)
return -EXDEV;
@ -1474,8 +1478,9 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in,
size_t len, unsigned int flags)
{
ssize_t ret;
bool splice = flags & COPY_FILE_SPLICE;
if (flags != 0)
if (flags & ~COPY_FILE_SPLICE)
return -EINVAL;
ret = generic_copy_file_checks(file_in, pos_in, file_out, pos_out, &len,
@ -1501,14 +1506,14 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in,
* same sb using clone, but for filesystems where both clone and copy
* are supported (e.g. nfs,cifs), we only call the copy method.
*/
if (file_out->f_op->copy_file_range) {
if (!splice && file_out->f_op->copy_file_range) {
ret = file_out->f_op->copy_file_range(file_in, pos_in,
file_out, pos_out,
len, flags);
goto done;
}
if (file_in->f_op->remap_file_range &&
if (!splice && file_in->f_op->remap_file_range &&
file_inode(file_in)->i_sb == file_inode(file_out)->i_sb) {
ret = file_in->f_op->remap_file_range(file_in, pos_in,
file_out, pos_out,
@ -1528,6 +1533,8 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in,
* consistent story about which filesystems support copy_file_range()
* and which filesystems do not, that will allow userspace tools to
* make consistent desicions w.r.t using copy_file_range().
*
* We also get here if caller (e.g. nfsd) requested COPY_FILE_SPLICE.
*/
ret = generic_copy_file_range(file_in, pos_in, file_out, pos_out, len,
flags);
@ -1582,6 +1589,10 @@ SYSCALL_DEFINE6(copy_file_range, int, fd_in, loff_t __user *, off_in,
pos_out = f_out.file->f_pos;
}
ret = -EINVAL;
if (flags != 0)
goto out;
ret = vfs_copy_file_range(f_in.file, pos_in, f_out.file, pos_out, len,
flags);
if (ret > 0) {

23
fs/zonefs/super.c
View File

@ -40,6 +40,13 @@ static void zonefs_account_active(struct inode *inode)
if (zi->i_ztype != ZONEFS_ZTYPE_SEQ)
return;
/*
* For zones that transitioned to the offline or readonly condition,
* we only need to clear the active state.
*/
if (zi->i_flags & (ZONEFS_ZONE_OFFLINE | ZONEFS_ZONE_READONLY))
goto out;
/*
* If the zone is active, that is, if it is explicitly open or
* partially written, check if it was already accounted as active.
@ -53,6 +60,7 @@ static void zonefs_account_active(struct inode *inode)
return;
}
out:
/* The zone is not active. If it was, update the active count */
if (zi->i_flags & ZONEFS_ZONE_ACTIVE) {
zi->i_flags &= ~ZONEFS_ZONE_ACTIVE;
@ -324,6 +332,7 @@ static loff_t zonefs_check_zone_condition(struct inode *inode,
inode->i_flags |= S_IMMUTABLE;
inode->i_mode &= ~0777;
zone->wp = zone->start;
zi->i_flags |= ZONEFS_ZONE_OFFLINE;
return 0;
case BLK_ZONE_COND_READONLY:
/*
@ -342,8 +351,10 @@ static loff_t zonefs_check_zone_condition(struct inode *inode,
zone->cond = BLK_ZONE_COND_OFFLINE;
inode->i_mode &= ~0777;
zone->wp = zone->start;
zi->i_flags |= ZONEFS_ZONE_OFFLINE;
return 0;
}
zi->i_flags |= ZONEFS_ZONE_READONLY;
inode->i_mode &= ~0222;
return i_size_read(inode);
case BLK_ZONE_COND_FULL:
@ -1922,18 +1933,18 @@ static int __init zonefs_init(void)
if (ret)
return ret;
ret = register_filesystem(&zonefs_type);
ret = zonefs_sysfs_init();
if (ret)
goto destroy_inodecache;
ret = zonefs_sysfs_init();
ret = register_filesystem(&zonefs_type);
if (ret)
goto unregister_fs;
goto sysfs_exit;
return 0;
unregister_fs:
unregister_filesystem(&zonefs_type);
sysfs_exit:
zonefs_sysfs_exit();
destroy_inodecache:
zonefs_destroy_inodecache();
@ -1942,9 +1953,9 @@ static int __init zonefs_init(void)
static void __exit zonefs_exit(void)
{
unregister_filesystem(&zonefs_type);
zonefs_sysfs_exit();
zonefs_destroy_inodecache();
unregister_filesystem(&zonefs_type);
}
MODULE_AUTHOR("Damien Le Moal");

6
fs/zonefs/zonefs.h
View File

@ -39,8 +39,10 @@ static inline enum zonefs_ztype zonefs_zone_type(struct blk_zone *zone)
return ZONEFS_ZTYPE_SEQ;
}
#define ZONEFS_ZONE_OPEN (1 << 0)
#define ZONEFS_ZONE_ACTIVE (1 << 1)
#define ZONEFS_ZONE_OPEN (1U << 0)
#define ZONEFS_ZONE_ACTIVE (1U << 1)
#define ZONEFS_ZONE_OFFLINE (1U << 2)
#define ZONEFS_ZONE_READONLY (1U << 3)
/*
* In-memory inode data.

7
include/linux/fault-inject.h
View File

@ -20,7 +20,6 @@ struct fault_attr {
atomic_t space;
unsigned long verbose;
bool task_filter;
bool no_warn;
unsigned long stacktrace_depth;
unsigned long require_start;
unsigned long require_end;
@ -32,6 +31,10 @@ struct fault_attr {
struct dentry *dname;
};
enum fault_flags {
FAULT_NOWARN = 1 << 0,
};
#define FAULT_ATTR_INITIALIZER { \
.interval = 1, \
.times = ATOMIC_INIT(1), \
@ -40,11 +43,11 @@ struct fault_attr {
.ratelimit_state = RATELIMIT_STATE_INIT_DISABLED, \
.verbose = 2, \
.dname = NULL, \
.no_warn = false, \
}
#define DECLARE_FAULT_ATTR(name) struct fault_attr name = FAULT_ATTR_INITIALIZER
int setup_fault_attr(struct fault_attr *attr, char *str);
bool should_fail_ex(struct fault_attr *attr, ssize_t size, int flags);
bool should_fail(struct fault_attr *attr, ssize_t size);
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS

8
include/linux/fs.h
View File

@ -2089,6 +2089,14 @@ struct dir_context {
*/
#define REMAP_FILE_ADVISORY (REMAP_FILE_CAN_SHORTEN)
/*
* These flags control the behavior of vfs_copy_file_range().
* They are not available to the user via syscall.
*
* COPY_FILE_SPLICE: call splice direct instead of fs clone/copy ops
*/
#define COPY_FILE_SPLICE (1 << 0)
struct iov_iter;
struct io_uring_cmd;

1
include/linux/kvm_host.h
View File

@ -776,6 +776,7 @@ struct kvm {
struct srcu_struct srcu;
struct srcu_struct irq_srcu;
pid_t userspace_pid;
bool override_halt_poll_ns;
unsigned int max_halt_poll_ns;
u32 dirty_ring_size;
bool vm_bugged;

2
include/linux/license.h
View File

@ -2,6 +2,8 @@
#ifndef __LICENSE_H
#define __LICENSE_H
#include <linux/string.h>
static inline int license_is_gpl_compatible(const char *license)
{
return (strcmp(license, "GPL") == 0

2
include/sound/sof/dai.h
View File

@ -84,8 +84,8 @@ enum sof_ipc_dai_type {
SOF_DAI_AMD_BT, /**< AMD ACP BT*/
SOF_DAI_AMD_SP, /**< AMD ACP SP */
SOF_DAI_AMD_DMIC, /**< AMD ACP DMIC */
SOF_DAI_AMD_HS, /**< Amd HS */
SOF_DAI_MEDIATEK_AFE, /**< Mediatek AFE */
SOF_DAI_AMD_HS, /**< Amd HS */
};
/* general purpose DAI configuration */

8
include/trace/events/huge_memory.h
View File

@ -171,15 +171,15 @@ TRACE_EVENT(mm_collapse_huge_page_swapin,
TRACE_EVENT(mm_khugepaged_scan_file,
TP_PROTO(struct mm_struct *mm, struct page *page, const char *filename,
TP_PROTO(struct mm_struct *mm, struct page *page, struct file *file,
int present, int swap, int result),
TP_ARGS(mm, page, filename, present, swap, result),
TP_ARGS(mm, page, file, present, swap, result),
TP_STRUCT__entry(
__field(struct mm_struct *, mm)
__field(unsigned long, pfn)
__string(filename, filename)
__string(filename, file->f_path.dentry->d_iname)
__field(int, present)
__field(int, swap)
__field(int, result)
@ -188,7 +188,7 @@ TRACE_EVENT(mm_khugepaged_scan_file,
TP_fast_assign(
__entry->mm = mm;
__entry->pfn = page ? page_to_pfn(page) : -1;
__assign_str(filename, filename);
__assign_str(filename, file->f_path.dentry->d_iname);
__entry->present = present;
__entry->swap = swap;
__entry->result = result;

2
init/Kconfig
View File

@ -87,7 +87,7 @@ config CC_HAS_ASM_GOTO_OUTPUT
config CC_HAS_ASM_GOTO_TIED_OUTPUT
depends on CC_HAS_ASM_GOTO_OUTPUT
# Detect buggy gcc and clang, fixed in gcc-11 clang-14.
def_bool $(success,echo 'int foo(int *x) { asm goto (".long (%l[bar]) - .\n": "+m"(*x) ::: bar); return *x; bar: return 0; }' | $CC -x c - -c -o /dev/null)
def_bool $(success,echo 'int foo(int *x) { asm goto (".long (%l[bar]) - .": "+m"(*x) ::: bar); return *x; bar: return 0; }' | $CC -x c - -c -o /dev/null)
config TOOLS_SUPPORT_RELR
def_bool $(success,env "CC=$(CC)" "LD=$(LD)" "NM=$(NM)" "OBJCOPY=$(OBJCOPY)" $(srctree)/scripts/tools-support-relr.sh)

2
io_uring/filetable.c
View File

@ -101,8 +101,6 @@ static int io_install_fixed_file(struct io_ring_ctx *ctx, struct file *file,
err:
if (needs_switch)
io_rsrc_node_switch(ctx, ctx->file_data);
if (ret)
fput(file);
return ret;
}

9
io_uring/io_uring.h
View File

@ -238,9 +238,14 @@ static inline unsigned int io_sqring_entries(struct io_ring_ctx *ctx)
static inline int io_run_task_work(void)
{
/*
* Always check-and-clear the task_work notification signal. With how
* signaling works for task_work, we can find it set with nothing to
* run. We need to clear it for that case, like get_signal() does.
*/
if (test_thread_flag(TIF_NOTIFY_SIGNAL))
clear_notify_signal();
if (task_work_pending(current)) {
if (test_thread_flag(TIF_NOTIFY_SIGNAL))
clear_notify_signal();
__set_current_state(TASK_RUNNING);
task_work_run();
return 1;

47
io_uring/poll.c
View File

@ -40,7 +40,14 @@ struct io_poll_table {
};
#define IO_POLL_CANCEL_FLAG BIT(31)
#define IO_POLL_REF_MASK GENMASK(30, 0)
#define IO_POLL_RETRY_FLAG BIT(30)
#define IO_POLL_REF_MASK GENMASK(29, 0)
/*
* We usually have 1-2 refs taken, 128 is more than enough and we want to
* maximise the margin between this amount and the moment when it overflows.
*/
#define IO_POLL_REF_BIAS 128
#define IO_WQE_F_DOUBLE 1
@ -58,6 +65,21 @@ static inline bool wqe_is_double(struct wait_queue_entry *wqe)
return priv & IO_WQE_F_DOUBLE;
}
static bool io_poll_get_ownership_slowpath(struct io_kiocb *req)
{
int v;
/*
* poll_refs are already elevated and we don't have much hope for
* grabbing the ownership. Instead of incrementing set a retry flag
* to notify the loop that there might have been some change.
*/
v = atomic_fetch_or(IO_POLL_RETRY_FLAG, &req->poll_refs);
if (v & IO_POLL_REF_MASK)
return false;
return !(atomic_fetch_inc(&req->poll_refs) & IO_POLL_REF_MASK);
}
/*
* If refs part of ->poll_refs (see IO_POLL_REF_MASK) is 0, it's free. We can
* bump it and acquire ownership. It's disallowed to modify requests while not
@ -66,6 +88,8 @@ static inline bool wqe_is_double(struct wait_queue_entry *wqe)
*/
static inline bool io_poll_get_ownership(struct io_kiocb *req)
{
if (unlikely(atomic_read(&req->poll_refs) >= IO_POLL_REF_BIAS))
return io_poll_get_ownership_slowpath(req);
return !(atomic_fetch_inc(&req->poll_refs) & IO_POLL_REF_MASK);
}
@ -235,6 +259,16 @@ static int io_poll_check_events(struct io_kiocb *req, bool *locked)
*/
if ((v & IO_POLL_REF_MASK) != 1)
req->cqe.res = 0;
if (v & IO_POLL_RETRY_FLAG) {
req->cqe.res = 0;
/*
* We won't find new events that came in between
* vfs_poll and the ref put unless we clear the flag
* in advance.
*/
atomic_andnot(IO_POLL_RETRY_FLAG, &req->poll_refs);
v &= ~IO_POLL_RETRY_FLAG;
}
/* the mask was stashed in __io_poll_execute */
if (!req->cqe.res) {
@ -274,7 +308,8 @@ static int io_poll_check_events(struct io_kiocb *req, bool *locked)
* Release all references, retry if someone tried to restart
* task_work while we were executing it.
*/
} while (atomic_sub_return(v & IO_POLL_REF_MASK, &req->poll_refs));
} while (atomic_sub_return(v & IO_POLL_REF_MASK, &req->poll_refs) &
IO_POLL_REF_MASK);
return IOU_POLL_NO_ACTION;
}
@ -518,7 +553,6 @@ static int __io_arm_poll_handler(struct io_kiocb *req,
unsigned issue_flags)
{
struct io_ring_ctx *ctx = req->ctx;
int v;
INIT_HLIST_NODE(&req->hash_node);
req->work.cancel_seq = atomic_read(&ctx->cancel_seq);
@ -586,11 +620,10 @@ static int __io_arm_poll_handler(struct io_kiocb *req,
if (ipt->owning) {
/*
* Release ownership. If someone tried to queue a tw while it was
* locked, kick it off for them.
* Try to release ownership. If we see a change of state, e.g.
* poll was waken up, queue up a tw, it'll deal with it.
*/
v = atomic_dec_return(&req->poll_refs);
if (unlikely(v & IO_POLL_REF_MASK))
if (atomic_cmpxchg(&req->poll_refs, 1, 0) != 1)
__io_poll_execute(req, 0);
}
return 0;

34
ipc/shm.c
View File

@ -275,10 +275,8 @@ static inline void shm_rmid(struct shmid_kernel *s)
}
static int __shm_open(struct vm_area_struct *vma)
static int __shm_open(struct shm_file_data *sfd)
{
struct file *file = vma->vm_file;
struct shm_file_data *sfd = shm_file_data(file);
struct shmid_kernel *shp;
shp = shm_lock(sfd->ns, sfd->id);
@ -302,7 +300,15 @@ static int __shm_open(struct vm_area_struct *vma)
/* This is called by fork, once for every shm attach. */
static void shm_open(struct vm_area_struct *vma)
{
int err = __shm_open(vma);
struct file *file = vma->vm_file;
struct shm_file_data *sfd = shm_file_data(file);
int err;
/* Always call underlying open if present */
if (sfd->vm_ops->open)
sfd->vm_ops->open(vma);
err = __shm_open(sfd);
/*
* We raced in the idr lookup or with shm_destroy().
* Either way, the ID is busted.
@ -359,10 +365,8 @@ static bool shm_may_destroy(struct shmid_kernel *shp)
* The descriptor has already been removed from the current->mm->mmap list
* and will later be kfree()d.
*/
static void shm_close(struct vm_area_struct *vma)
static void __shm_close(struct shm_file_data *sfd)
{
struct file *file = vma->vm_file;
struct shm_file_data *sfd = shm_file_data(file);
struct shmid_kernel *shp;
struct ipc_namespace *ns = sfd->ns;
@ -388,6 +392,18 @@ static void shm_close(struct vm_area_struct *vma)
up_write(&shm_ids(ns).rwsem);
}
static void shm_close(struct vm_area_struct *vma)
{
struct file *file = vma->vm_file;
struct shm_file_data *sfd = shm_file_data(file);
/* Always call underlying close if present */
if (sfd->vm_ops->close)
sfd->vm_ops->close(vma);
__shm_close(sfd);
}
/* Called with ns->shm_ids(ns).rwsem locked */
static int shm_try_destroy_orphaned(int id, void *p, void *data)
{
@ -583,13 +599,13 @@ static int shm_mmap(struct file *file, struct vm_area_struct *vma)
* IPC ID that was removed, and possibly even reused by another shm
* segment already. Propagate this case as an error to caller.
*/
ret = __shm_open(vma);
ret = __shm_open(sfd);
if (ret)
return ret;
ret = call_mmap(sfd->file, vma);
if (ret) {
shm_close(vma);
__shm_close(sfd);
return ret;
}
sfd->vm_ops = vma->vm_ops;

27
kernel/events/core.c
View File

@ -9259,6 +9259,19 @@ int perf_event_account_interrupt(struct perf_event *event)
return __perf_event_account_interrupt(event, 1);
}
static inline bool sample_is_allowed(struct perf_event *event, struct pt_regs *regs)
{
/*
* Due to interrupt latency (AKA "skid"), we may enter the
* kernel before taking an overflow, even if the PMU is only
* counting user events.
*/
if (event->attr.exclude_kernel && !user_mode(regs))
return false;
return true;
}
/*
* Generic event overflow handling, sampling.
*/
@ -9292,6 +9305,13 @@ static int __perf_event_overflow(struct perf_event *event,
}
if (event->attr.sigtrap) {
/*
* The desired behaviour of sigtrap vs invalid samples is a bit
* tricky; on the one hand, one should not loose the SIGTRAP if
* it is the first event, on the other hand, we should also not
* trigger the WARN or override the data address.
*/
bool valid_sample = sample_is_allowed(event, regs);
unsigned int pending_id = 1;
if (regs)
@ -9299,7 +9319,7 @@ static int __perf_event_overflow(struct perf_event *event,
if (!event->pending_sigtrap) {
event->pending_sigtrap = pending_id;
local_inc(&event->ctx->nr_pending);
} else if (event->attr.exclude_kernel) {
} else if (event->attr.exclude_kernel && valid_sample) {
/*
* Should not be able to return to user space without
* consuming pending_sigtrap; with exceptions:
@ -9314,7 +9334,10 @@ static int __perf_event_overflow(struct perf_event *event,
*/
WARN_ON_ONCE(event->pending_sigtrap != pending_id);
}
event->pending_addr = data->addr;
event->pending_addr = 0;
if (valid_sample && (data->sample_flags & PERF_SAMPLE_ADDR))
event->pending_addr = data->addr;
irq_work_queue(&event->pending_irq);
}

2
kernel/gcov/clang.c
View File

@ -280,6 +280,8 @@ void gcov_info_add(struct gcov_info *dst, struct gcov_info *src)
for (i = 0; i < sfn_ptr->num_counters; i++)
dfn_ptr->counters[i] += sfn_ptr->counters[i];
sfn_ptr = list_next_entry(sfn_ptr, head);
}
}

30
kernel/sched/cpufreq_schedutil.c
View File

@ -25,9 +25,6 @@ struct sugov_policy {
unsigned int next_freq;
unsigned int cached_raw_freq;
/* max CPU capacity, which is equal for all CPUs in freq. domain */
unsigned long max;
/* The next fields are only needed if fast switch cannot be used: */
struct irq_work irq_work;
struct kthread_work work;
@ -51,6 +48,7 @@ struct sugov_cpu {
unsigned long util;
unsigned long bw_dl;
unsigned long max;
/* The field below is for single-CPU policies only: */
#ifdef CONFIG_NO_HZ_COMMON
@ -160,6 +158,7 @@ static void sugov_get_util(struct sugov_cpu *sg_cpu)
{
struct rq *rq = cpu_rq(sg_cpu->cpu);
sg_cpu->max = arch_scale_cpu_capacity(sg_cpu->cpu);
sg_cpu->bw_dl = cpu_bw_dl(rq);
sg_cpu->util = effective_cpu_util(sg_cpu->cpu, cpu_util_cfs(sg_cpu->cpu),
FREQUENCY_UTIL, NULL);
@ -254,7 +253,6 @@ static void sugov_iowait_boost(struct sugov_cpu *sg_cpu, u64 time,
*/
static void sugov_iowait_apply(struct sugov_cpu *sg_cpu, u64 time)
{
struct sugov_policy *sg_policy = sg_cpu->sg_policy;
unsigned long boost;
/* No boost currently required */
@ -282,8 +280,7 @@ static void sugov_iowait_apply(struct sugov_cpu *sg_cpu, u64 time)
* sg_cpu->util is already in capacity scale; convert iowait_boost
* into the same scale so we can compare.
*/
boost = sg_cpu->iowait_boost * sg_policy->max;
boost >>= SCHED_CAPACITY_SHIFT;
boost = (sg_cpu->iowait_boost * sg_cpu->max) >> SCHED_CAPACITY_SHIFT;
boost = uclamp_rq_util_with(cpu_rq(sg_cpu->cpu), boost, NULL);
if (sg_cpu->util < boost)
sg_cpu->util = boost;
@ -340,7 +337,7 @@ static void sugov_update_single_freq(struct update_util_data *hook, u64 time,
if (!sugov_update_single_common(sg_cpu, time, flags))
return;
next_f = get_next_freq(sg_policy, sg_cpu->util, sg_policy->max);
next_f = get_next_freq(sg_policy, sg_cpu->util, sg_cpu->max);
/*
* Do not reduce the frequency if the CPU has not been idle
* recently, as the reduction is likely to be premature then.
@ -376,7 +373,6 @@ static void sugov_update_single_perf(struct update_util_data *hook, u64 time,
unsigned int flags)
{
struct sugov_cpu *sg_cpu = container_of(hook, struct sugov_cpu, update_util);
struct sugov_policy *sg_policy = sg_cpu->sg_policy;
unsigned long prev_util = sg_cpu->util;
/*
@ -403,8 +399,7 @@ static void sugov_update_single_perf(struct update_util_data *hook, u64 time,
sg_cpu->util = prev_util;
cpufreq_driver_adjust_perf(sg_cpu->cpu, map_util_perf(sg_cpu->bw_dl),
map_util_perf(sg_cpu->util),
sg_policy->max);
map_util_perf(sg_cpu->util), sg_cpu->max);
sg_cpu->sg_policy->last_freq_update_time = time;
}
@ -413,19 +408,25 @@ static unsigned int sugov_next_freq_shared(struct sugov_cpu *sg_cpu, u64 time)
{
struct sugov_policy *sg_policy = sg_cpu->sg_policy;
struct cpufreq_policy *policy = sg_policy->policy;
unsigned long util = 0;
unsigned long util = 0, max = 1;
unsigned int j;
for_each_cpu(j, policy->cpus) {
struct sugov_cpu *j_sg_cpu = &per_cpu(sugov_cpu, j);
unsigned long j_util, j_max;
sugov_get_util(j_sg_cpu);
sugov_iowait_apply(j_sg_cpu, time);
j_util = j_sg_cpu->util;
j_max = j_sg_cpu->max;
util = max(j_sg_cpu->util, util);
if (j_util * max > j_max * util) {
util = j_util;
max = j_max;
}
}
return get_next_freq(sg_policy, util, sg_policy->max);
return get_next_freq(sg_policy, util, max);
}
static void
@ -751,7 +752,7 @@ static int sugov_start(struct cpufreq_policy *policy)
{
struct sugov_policy *sg_policy = policy->governor_data;
void (*uu)(struct update_util_data *data, u64 time, unsigned int flags);
unsigned int cpu = cpumask_first(policy->cpus);
unsigned int cpu;
sg_policy->freq_update_delay_ns = sg_policy->tunables->rate_limit_us * NSEC_PER_USEC;
sg_policy->last_freq_update_time = 0;
@ -759,7 +760,6 @@ static int sugov_start(struct cpufreq_policy *policy)
sg_policy->work_in_progress = false;
sg_policy->limits_changed = false;
sg_policy->cached_raw_freq = 0;
sg_policy->max = arch_scale_cpu_capacity(cpu);
sg_policy->need_freq_update = cpufreq_driver_test_flags(CPUFREQ_NEED_UPDATE_LIMITS);

1
lib/Kconfig.debug
View File

@ -2107,6 +2107,7 @@ config KPROBES_SANITY_TEST
depends on DEBUG_KERNEL
depends on KPROBES
depends on KUNIT
select STACKTRACE if ARCH_CORRECT_STACKTRACE_ON_KRETPROBE
default KUNIT_ALL_TESTS
help
This option provides for testing basic kprobes functionality on

13
lib/fault-inject.c
View File

@ -41,9 +41,6 @@ EXPORT_SYMBOL_GPL(setup_fault_attr);
static void fail_dump(struct fault_attr *attr)
{
if (attr->no_warn)
return;
if (attr->verbose > 0 && __ratelimit(&attr->ratelimit_state)) {
printk(KERN_NOTICE "FAULT_INJECTION: forcing a failure.\n"
"name %pd, interval %lu, probability %lu, "
@ -103,7 +100,7 @@ static inline bool fail_stacktrace(struct fault_attr *attr)
* http://www.nongnu.org/failmalloc/
*/
bool should_fail(struct fault_attr *attr, ssize_t size)
bool should_fail_ex(struct fault_attr *attr, ssize_t size, int flags)
{
if (in_task()) {
unsigned int fail_nth = READ_ONCE(current->fail_nth);
@ -146,13 +143,19 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
return false;
fail:
fail_dump(attr);
if (!(flags & FAULT_NOWARN))
fail_dump(attr);
if (atomic_read(&attr->times) != -1)
atomic_dec_not_zero(&attr->times);
return true;
}
bool should_fail(struct fault_attr *attr, ssize_t size)
{
return should_fail_ex(attr, size, 0);
}
EXPORT_SYMBOL_GPL(should_fail);
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS

2
lib/vdso/Makefile
View File

@ -17,6 +17,6 @@ $(error ARCH_REL_TYPE_ABS is not set)
endif
quiet_cmd_vdso_check = VDSOCHK $@
cmd_vdso_check = if $(OBJDUMP) -R $@ | egrep -h "$(ARCH_REL_TYPE_ABS)"; \
cmd_vdso_check = if $(OBJDUMP) -R $@ | grep -E -h "$(ARCH_REL_TYPE_ABS)"; \
then (echo >&2 "$@: dynamic relocations are not supported"; \
rm -f $@; /bin/false); fi

4
mm/damon/sysfs.c
View File

@ -2339,6 +2339,10 @@ static int damon_sysfs_upd_schemes_stats(struct damon_sysfs_kdamond *kdamond)
damon_for_each_scheme(scheme, ctx) {
struct damon_sysfs_stats *sysfs_stats;
/* user could have removed the scheme sysfs dir */
if (schemes_idx >= sysfs_schemes->nr)
break;
sysfs_stats = sysfs_schemes->schemes_arr[schemes_idx++]->stats;
sysfs_stats->nr_tried = scheme->stat.nr_tried;
sysfs_stats->sz_tried = scheme->stat.sz_tried;

12
mm/failslab.c
View File

@ -16,6 +16,8 @@ static struct {
bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags)
{
int flags = 0;
/* No fault-injection for bootstrap cache */
if (unlikely(s == kmem_cache))
return false;
@ -30,10 +32,16 @@ bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags)
if (failslab.cache_filter && !(s->flags & SLAB_FAILSLAB))
return false;
/*
* In some cases, it expects to specify __GFP_NOWARN
* to avoid printing any information(not just a warning),
* thus avoiding deadlocks. See commit 6b9dbedbe349 for
* details.
*/
if (gfpflags & __GFP_NOWARN)
failslab.attr.no_warn = true;
flags |= FAULT_NOWARN;
return should_fail(&failslab.attr, s->object_size);
return should_fail_ex(&failslab.attr, s->object_size, flags);
}
static int __init setup_failslab(char *str)

4
mm/hugetlb.c
View File

@ -1800,6 +1800,7 @@ static bool __prep_compound_gigantic_page(struct page *page, unsigned int order,
/* we rely on prep_new_huge_page to set the destructor */
set_compound_order(page, order);
__ClearPageReserved(page);
__SetPageHead(page);
for (i = 0; i < nr_pages; i++) {
p = nth_page(page, i);
@ -1816,7 +1817,8 @@ static bool __prep_compound_gigantic_page(struct page *page, unsigned int order,
* on the head page when they need know if put_page() is needed
* after get_user_pages().
*/
__ClearPageReserved(p);
if (i != 0) /* head page cleared above */
__ClearPageReserved(p);
/*
* Subtle and very unlikely
*

13
mm/kfence/report.c
View File

@ -75,18 +75,23 @@ static int get_stack_skipnr(const unsigned long stack_entries[], int num_entries
if (str_has_prefix(buf, ARCH_FUNC_PREFIX "kfence_") ||
str_has_prefix(buf, ARCH_FUNC_PREFIX "__kfence_") ||
str_has_prefix(buf, ARCH_FUNC_PREFIX "__kmem_cache_free") ||
!strncmp(buf, ARCH_FUNC_PREFIX "__slab_free", len)) {
/*
* In case of tail calls from any of the below
* to any of the above.
* In case of tail calls from any of the below to any of
* the above, optimized by the compiler such that the
* stack trace would omit the initial entry point below.
*/
fallback = skipnr + 1;
}
/* Also the *_bulk() variants by only checking prefixes. */
/*
* The below list should only include the initial entry points
* into the slab allocators. Includes the *_bulk() variants by
* checking prefixes.
*/
if (str_has_prefix(buf, ARCH_FUNC_PREFIX "kfree") ||
str_has_prefix(buf, ARCH_FUNC_PREFIX "kmem_cache_free") ||
str_has_prefix(buf, ARCH_FUNC_PREFIX "__kmem_cache_free") ||
str_has_prefix(buf, ARCH_FUNC_PREFIX "__kmalloc") ||
str_has_prefix(buf, ARCH_FUNC_PREFIX "kmem_cache_alloc"))
goto found;

35
mm/khugepaged.c
View File

@ -97,8 +97,8 @@ struct collapse_control {
/* Num pages scanned per node */
u32 node_load[MAX_NUMNODES];
/* Last target selected in hpage_collapse_find_target_node() */
int last_target_node;
/* nodemask for allocation fallback */
nodemask_t alloc_nmask;
};
/**
@ -734,7 +734,6 @@ static void khugepaged_alloc_sleep(void)
struct collapse_control khugepaged_collapse_control = {
.is_khugepaged = true,
.last_target_node = NUMA_NO_NODE,
};
static bool hpage_collapse_scan_abort(int nid, struct collapse_control *cc)
@ -783,16 +782,11 @@ static int hpage_collapse_find_target_node(struct collapse_control *cc)
target_node = nid;
}
/* do some balance if several nodes have the same hit record */
if (target_node <= cc->last_target_node)
for (nid = cc->last_target_node + 1; nid < MAX_NUMNODES;
nid++)
if (max_value == cc->node_load[nid]) {
target_node = nid;
break;
}
for_each_online_node(nid) {
if (max_value == cc->node_load[nid])
node_set(nid, cc->alloc_nmask);
}
cc->last_target_node = target_node;
return target_node;
}
#else
@ -802,9 +796,10 @@ static int hpage_collapse_find_target_node(struct collapse_control *cc)
}
#endif
static bool hpage_collapse_alloc_page(struct page **hpage, gfp_t gfp, int node)
static bool hpage_collapse_alloc_page(struct page **hpage, gfp_t gfp, int node,
nodemask_t *nmask)
{
*hpage = __alloc_pages_node(node, gfp, HPAGE_PMD_ORDER);
*hpage = __alloc_pages(gfp, HPAGE_PMD_ORDER, node, nmask);
if (unlikely(!*hpage)) {
count_vm_event(THP_COLLAPSE_ALLOC_FAILED);
return false;
@ -955,12 +950,11 @@ static int __collapse_huge_page_swapin(struct mm_struct *mm,
static int alloc_charge_hpage(struct page **hpage, struct mm_struct *mm,
struct collapse_control *cc)
{
/* Only allocate from the target node */
gfp_t gfp = (cc->is_khugepaged ? alloc_hugepage_khugepaged_gfpmask() :
GFP_TRANSHUGE) | __GFP_THISNODE;
GFP_TRANSHUGE);
int node = hpage_collapse_find_target_node(cc);
if (!hpage_collapse_alloc_page(hpage, gfp, node))
if (!hpage_collapse_alloc_page(hpage, gfp, node, &cc->alloc_nmask))
return SCAN_ALLOC_HUGE_PAGE_FAIL;
if (unlikely(mem_cgroup_charge(page_folio(*hpage), mm, gfp)))
return SCAN_CGROUP_CHARGE_FAIL;
@ -1144,6 +1138,7 @@ static int hpage_collapse_scan_pmd(struct mm_struct *mm,
goto out;
memset(cc->node_load, 0, sizeof(cc->node_load));
nodes_clear(cc->alloc_nmask);
pte = pte_offset_map_lock(mm, pmd, address, &ptl);
for (_address = address, _pte = pte; _pte < pte + HPAGE_PMD_NR;
_pte++, _address += PAGE_SIZE) {
@ -2077,6 +2072,7 @@ static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr,
present = 0;
swap = 0;
memset(cc->node_load, 0, sizeof(cc->node_load));
nodes_clear(cc->alloc_nmask);
rcu_read_lock();
xas_for_each(&xas, page, start + HPAGE_PMD_NR - 1) {
if (xas_retry(&xas, page))
@ -2157,8 +2153,7 @@ static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr,
}
}
trace_mm_khugepaged_scan_file(mm, page, file->f_path.dentry->d_iname,
present, swap, result);
trace_mm_khugepaged_scan_file(mm, page, file, present, swap, result);
return result;
}
#else
@ -2576,7 +2571,6 @@ int madvise_collapse(struct vm_area_struct *vma, struct vm_area_struct **prev,
if (!cc)
return -ENOMEM;
cc->is_khugepaged = false;
cc->last_target_node = NUMA_NO_NODE;
mmgrab(mm);
lru_add_drain_all();
@ -2602,6 +2596,7 @@ int madvise_collapse(struct vm_area_struct *vma, struct vm_area_struct **prev,
}
mmap_assert_locked(mm);
memset(cc->node_load, 0, sizeof(cc->node_load));
nodes_clear(cc->alloc_nmask);
if (IS_ENABLED(CONFIG_SHMEM) && vma->vm_file) {
struct file *file = get_file(vma->vm_file);
pgoff_t pgoff = linear_page_index(vma, addr);

2
mm/memcontrol.c
View File

@ -3026,7 +3026,7 @@ struct obj_cgroup *get_obj_cgroup_from_page(struct page *page)
{
struct obj_cgroup *objcg;
if (!memcg_kmem_enabled() || memcg_kmem_bypass())
if (!memcg_kmem_enabled())
return NULL;
if (PageMemcgKmem(page)) {

2
mm/memory.c
View File

@ -3764,7 +3764,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
*/
get_page(vmf->page);
pte_unmap_unlock(vmf->pte, vmf->ptl);
vmf->page->pgmap->ops->migrate_to_ram(vmf);
ret = vmf->page->pgmap->ops->migrate_to_ram(vmf);
put_page(vmf->page);
} else if (is_hwpoison_entry(entry)) {
ret = VM_FAULT_HWPOISON;

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