The usual batch; most of them are DT tweaks to fix misdescribed
hardware. Beyond that:
- A bugfix for MMP2 CPU detection, it's been there quite a while but
makes sense to fix now anyway.
- Some power management tweaks;
+ disabling of CPU idle power state on Marvell Armada 7K/8K (Macchiatobin et al)
+ Increase of minimum voltage on BananaPi M3
+ Tweak of power ramp time for DVFS on NXP/Freescale i.MX7SX
- A couple of MAINTAINER updates; MMP has a new volunteer to look after
it, and Mediatek adds a few keywords, IRC channel and wiki URL.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"The usual batch; most of them are DT tweaks to fix misdescribed
hardware. Beyond that:
- A bugfix for MMP2 CPU detection, it's been there quite a while but
makes sense to fix now anyway.
- Some power management tweaks:
+ disabling of CPU idle power state on Marvell Armada 7K/8K
(Macchiatobin et al)
+ Increase of minimum voltage on BananaPi M3
+ Tweak of power ramp time for DVFS on NXP/Freescale i.MX7SX
- A couple of MAINTAINER updates:
+ MMP has a new volunteer to look after it
+ Mediatek adds a few keywords, IRC channel and wiki URL"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: imx7d-nitrogen7: Fix the description of the Wifi clock
ARM: imx: update the cpu power up timing setting on i.mx6sx
Revert "arm64: dts: marvell: add CPU Idle power state support on Armada 7K/8K"
ARM: dts: imx7d-pico: Describe the Wifi clock
ARM: dts: realview: Fix some more duplicate regulator nodes
MAINTAINERS: update entry for MMP platform
ARM: mmp/mmp2: fix cpu_is_mmp2() on mmp2-dt
MAINTAINERS: mediatek: Update SoC entry
ARM: dts: bcm2837: Fix polarity of wifi reset GPIOs
arm64: dts: mt7622: Drop the general purpose timer node
arm64: dts: mt7622: fix no more console output on BPI-R64 board
arm64: dts: mt7622: fix no more console output on rfb1
ARM: dts: sun8i: a83t: bananapi-m3: increase vcc-pd voltage to 3.3V
Pull networking fixes from David Miller:
"A decent batch of fixes here. I'd say about half are for problems that
have existed for a while, and half are for new regressions added in
the 4.20 merge window.
1) Fix 10G SFP phy module detection in mvpp2, from Baruch Siach.
2) Revert bogus emac driver change, from Benjamin Herrenschmidt.
3) Handle BPF exported data structure with pointers when building
32-bit userland, from Daniel Borkmann.
4) Memory leak fix in act_police, from Davide Caratti.
5) Check RX checksum offload in RX descriptors properly in aquantia
driver, from Dmitry Bogdanov.
6) SKB unlink fix in various spots, from Edward Cree.
7) ndo_dflt_fdb_dump() only works with ethernet, enforce this, from
Eric Dumazet.
8) Fix FID leak in mlxsw driver, from Ido Schimmel.
9) IOTLB locking fix in vhost, from Jean-Philippe Brucker.
10) Fix SKB truesize accounting in ipv4/ipv6/netfilter frag memory
limits otherwise namespace exit can hang. From Jiri Wiesner.
11) Address block parsing length fixes in x25 from Martin Schiller.
12) IRQ and ring accounting fixes in bnxt_en, from Michael Chan.
13) For tun interfaces, only iface delete works with rtnl ops, enforce
this by disallowing add. From Nicolas Dichtel.
14) Use after free in liquidio, from Pan Bian.
15) Fix SKB use after passing to netif_receive_skb(), from Prashant
Bhole.
16) Static key accounting and other fixes in XPS from Sabrina Dubroca.
17) Partially initialized flow key passed to ip6_route_output(), from
Shmulik Ladkani.
18) Fix RTNL deadlock during reset in ibmvnic driver, from Thomas
Falcon.
19) Several small TCP fixes (off-by-one on window probe abort, NULL
deref in tail loss probe, SNMP mis-estimations) from Yuchung
Cheng"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (93 commits)
net/sched: cls_flower: Reject duplicated rules also under skip_sw
bnxt_en: Fix _bnxt_get_max_rings() for 57500 chips.
bnxt_en: Fix NQ/CP rings accounting on the new 57500 chips.
bnxt_en: Keep track of reserved IRQs.
bnxt_en: Fix CNP CoS queue regression.
net/mlx4_core: Correctly set PFC param if global pause is turned off.
Revert "net/ibm/emac: wrong bit is used for STA control"
neighbour: Avoid writing before skb->head in neigh_hh_output()
ipv6: Check available headroom in ip6_xmit() even without options
tcp: lack of available data can also cause TSO defer
ipv6: sr: properly initialize flowi6 prior passing to ip6_route_output
mlxsw: spectrum_switchdev: Fix VLAN device deletion via ioctl
mlxsw: spectrum_router: Relax GRE decap matching check
mlxsw: spectrum_switchdev: Avoid leaking FID's reference count
mlxsw: spectrum_nve: Remove easily triggerable warnings
ipv4: ipv6: netfilter: Adjust the frag mem limit when truesize changes
sctp: frag_point sanity check
tcp: fix NULL ref in tail loss probe
tcp: Do not underestimate rwnd_limited
net: use skb_list_del_init() to remove from RX sublists
...
Pull x86 fixes from Ingo Molnar:
"Three fixes: a boot parameter re-(re-)fix, a retpoline build artifact
fix and an LLVM workaround"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso: Drop implicit common-page-size linker flag
x86/build: Fix compiler support check for CONFIG_RETPOLINE
x86/boot: Clear RSDP address in boot_params for broken loaders
Pull kprobes fixes from Ingo Molnar:
"Two kprobes fixes: a blacklist fix and an instruction patching related
corruption fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kprobes/x86: Blacklist non-attachable interrupt functions
kprobes/x86: Fix instruction patching corruption when copying more than one RIP-relative instruction
Pull EFI fixes from Ingo Molnar:
"Two fixes: a large-system fix and an earlyprintk fix with certain
resolutions"
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/earlyprintk/efi: Fix infinite loop on some screen widths
x86/efi: Allocate e820 buffer before calling efi_exit_boot_service
Adding CPU Idle state in the device tree for Armada 8040 seems to
breaks boot on some board, so let's revert it waiting for a better
solution.
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Merge tag 'mvebu-fixes-4.20-1' of git://git.infradead.org/linux-mvebu into fixes
mvebu fixes for 4.20
Adding CPU Idle state in the device tree for Armada 8040 seems to
breaks boot on some board, so let's revert it waiting for a better
solution.
* tag 'mvebu-fixes-4.20-1' of git://git.infradead.org/linux-mvebu:
Revert "arm64: dts: marvell: add CPU Idle power state support on Armada 7K/8K"
Signed-off-by: Olof Johansson <olof@lixom.net>
One small fix for a regulator range on the Banana Pi M3
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Merge tag 'sunxi-fixes-for-4.20' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes
Allwinner fixes for 4.20
One small fix for a regulator range on the Banana Pi M3
* tag 'sunxi-fixes-for-4.20' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: dts: sun8i: a83t: bananapi-m3: increase vcc-pd voltage to 3.3V
Signed-off-by: Olof Johansson <olof@lixom.net>
- A couple of fixes on imx7d-pico and imx7d-nitrogen7 boards to correct
the description of the Wifi clock.
- Change SW2ISO count to get a safer ARM LDO ramp-up time, so that
different boards can be covered. This fixes the ARM LDO failure seen
on some customer boards.
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Merge tag 'imx-fixes-4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
i.MX fixes for 4.20, round 3:
- A couple of fixes on imx7d-pico and imx7d-nitrogen7 boards to correct
the description of the Wifi clock.
- Change SW2ISO count to get a safer ARM LDO ramp-up time, so that
different boards can be covered. This fixes the ARM LDO failure seen
on some customer boards.
* tag 'imx-fixes-4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx7d-nitrogen7: Fix the description of the Wifi clock
ARM: imx: update the cpu power up timing setting on i.mx6sx
ARM: dts: imx7d-pico: Describe the Wifi clock
Signed-off-by: Olof Johansson <olof@lixom.net>
- Introduce protected-clock DT binding to fix breakage on qcom sdm845-mtp
boards where the qspi clks introduced this merge window cause the
firmware on those boards to take down the system if we try to read
the clk registers
- Fix a couple off-by-one errors found by Dan Carpenter
- Handle failure in zynq fixed factor clk driver to avoid using
uninitialized data
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A few clk driver fixes this time:
- Introduce protected-clock DT binding to fix breakage on qcom
sdm845-mtp boards where the qspi clks introduced this merge window
cause the firmware on those boards to take down the system if we
try to read the clk registers
- Fix a couple off-by-one errors found by Dan Carpenter
- Handle failure in zynq fixed factor clk driver to avoid using
uninitialized data"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: zynqmp: Off by one in zynqmp_is_valid_clock()
clk: mmp: Off by one in mmp_clk_add()
clk: mvebu: Off by one bugs in cp110_of_clk_get()
arm64: dts: qcom: sdm845-mtp: Mark protected gcc clocks
clk: qcom: Support 'protected-clocks' property
dt-bindings: clk: Introduce 'protected-clocks' property
clk: zynqmp: handle fixed factor param query error
GNU linker's -z common-page-size's default value is based on the target
architecture. arch/x86/entry/vdso/Makefile sets it to the architecture
default, which is implicit and redundant. Drop it.
Fixes: 2aae950b21e4 ("x86_64: Add vDSO for x86-64 with gettimeofday/clock_gettime/getcpu")
Reported-by: Dmitry Golovin <dima@golovin.in>
Reported-by: Bill Wendling <morbo@google.com>
Suggested-by: Dmitry Golovin <dima@golovin.in>
Suggested-by: Rui Ueyama <ruiu@google.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Fangrui Song <maskray@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20181206191231.192355-1-ndesaulniers@google.com
Link: https://bugs.llvm.org/show_bug.cgi?id=38774
Link: https://github.com/ClangBuiltLinux/linux/issues/31
Since commit 3b8c9f1cdfc50 ("arm64: IPI each CPU after invalidating the
I-cache for kernel mappings"), a call to flush_icache_range() will use
an IPI to cross-call other online CPUs so that any stale instructions
are flushed from their pipelines. This triggers a WARN during the
hibernation resume path, where flush_icache_range() is called with
interrupts disabled and is therefore prone to deadlock:
| Disabling non-boot CPUs ...
| CPU1: shutdown
| psci: CPU1 killed.
| CPU2: shutdown
| psci: CPU2 killed.
| CPU3: shutdown
| psci: CPU3 killed.
| WARNING: CPU: 0 PID: 1 at ../kernel/smp.c:416 smp_call_function_many+0xd4/0x350
| Modules linked in:
| CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.20.0-rc4 #1
Since all secondary CPUs have been taken offline prior to invalidating
the I-cache, there's actually no need for an IPI and we can simply call
__flush_icache_range() instead.
Cc: <stable@vger.kernel.org>
Fixes: 3b8c9f1cdfc50 ("arm64: IPI each CPU after invalidating the I-cache for kernel mappings")
Reported-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Tested-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Tested-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Pull ARM spectre fix from Russell King:
"Exynos folk noticed that CPU hotplug wasn't working with their kernel
configuration, and have tested this as fixing the problem"
* 'spectre' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: ensure that processor vtables is not lost after boot
Pull ARM fixes from Russell King:
"Some small fixes that have been accumulated:
- Chris Cole noticed that in a SMP environment, the DMA cache
coherence handling can produce undesirable results in a corner
case
- Propagate that fix for ARMv7M as well
- Fix a false positive with source fortification
- Fix an uninitialised return that Nathan Jones spotted"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8816/1: dma-mapping: fix potential uninitialized return
ARM: 8815/1: V7M: align v7m_dma_inv_range() with v7 counterpart
ARM: 8814/1: mm: improve/fix ARM v7_dma_inv_range() unaligned address handling
ARM: 8806/1: kprobes: Fix false positive with FORTIFY_SOURCE
Marek Szyprowski reported problems with CPU hotplug in current kernels.
This was tracked down to the processor vtables being located in an
init section, and therefore discarded after kernel boot, despite being
required after boot to properly initialise the non-boot CPUs.
Arrange for these tables to end up in .rodata when required.
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Fixes: 383fb3ee8024 ("ARM: spectre-v2: per-CPU vtables to work around big.Little systems")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
These interrupt functions are already non-attachable by kprobes.
Blacklist them explicitly so that they can show up in
/sys/kernel/debug/kprobes/blacklist and tools like BCC can use this
additional information.
Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yonghong Song <yhs@fb.com>
Link: http://lkml.kernel.org/r/20181206095648.GA8249@Dell
Signed-off-by: Ingo Molnar <mingo@kernel.org>
According to bindings/regulator/fixed-regulator.txt the 'clocks' and
'clock-names' properties are not valid ones.
In order to turn on the Wifi clock the correct location for describing
the CLKO2 clock is via a mmc-pwrseq handle, so do it accordingly.
Fixes: 56354959cfec ("ARM: dts: imx: add Boundary Devices Nitrogen7 board")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The sw2iso count should cover ARM LDO ramp-up time,
the MAX ARM LDO ramp-up time may be up to more than
100us on some boards, this patch sets sw2iso to 0xf
(~384us) which is the reset value, and it is much
more safe to cover different boards, since we have
observed that some customer boards failed with current
setting of 0x2.
Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Alexei Starovoitov says:
====================
pull-request: bpf 2018-12-05
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) fix bpf uapi pointers for 32-bit architectures, from Daniel.
2) improve verifer ability to handle progs with a lot of branches, from Alexei.
3) strict btf checks, from Yonghong.
4) bpf_sk_lookup api cleanup, from Joe.
5) other misc fixes
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
- Missing reads{x}()/writes{x}() getting in the way of some drivers [Jose Abreu]
- Builds defaulting to ARCv2 ISA based configsa [Kevin Hilman]
- Miscll fixes
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Merge tag 'arc-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes/updates from Vineet Gupta
- Missing reads{x}()/writes{x}() getting in the way of some drivers [Jose Abreu]
- Builds defaulting to ARCv2 ISA based configsa [Kevin Hilman]
- Misc fixes
* tag 'arc-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: io.h: Implement reads{x}()/writes{x}()
ARC: change defconfig defaults to ARCv2
arc: [devboards] Add support of NFSv3 ACL
ARC: mm: fix uninitialised signal code in do_page_fault
ARC: [plat-hsdk] Enable DW APB GPIO support
ARCv2: boot log unaligned access in use
ARC: IOC: panic if kernel was started with previously enabled IOC
ARC: remove redundant 'default n' from Kconfig
This reverts commit 8ed46368776b3bc93d74c1f8f2bfb9fd8a9ad805.
This commit breaks boot on Armada 8K based systems. Reverting it makes
affected systems boot again.
Reported-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
It is troublesome to add a diagnostic like this to the Makefile
parse stage because the top-level Makefile could be parsed with
a stale include/config/auto.conf.
Once you are hit by the error about non-retpoline compiler, the
compilation still breaks even after disabling CONFIG_RETPOLINE.
The easiest fix is to move this check to the "archprepare" like
this commit did:
829fe4aa9ac1 ("x86: Allow generating user-space headers without a compiler")
Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Fixes: 4cd24de3a098 ("x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support")
Link: http://lkml.kernel.org/r/1543991239-18476-1-git-send-email-yamada.masahiro@socionext.com
Link: https://lkml.org/lkml/2018/12/4/206
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The Wifi chip should be clocked by a 32kHz clock coming from i.MX7D
CLKO2 output pin, so describe the pinmux and clock hierarchy in the
device tree to allow the Wifi chip to be properly clocked.
Managed to successfully test Wifi with such change. Used the standard
nvram.txt file provided by TechNexion, which selects an external 32kHz
clock for the Wifi chip by default.
Fixes: 99a52450c707 ("ARM: dts: imx7d-pico: Add Wifi support")
Suggested-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Tested-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
While trying to use the dma_mmap_*() interface, it was noticed that this
interface returns strange values when passed an incorrect length.
If neither of the if() statements fire then the return value is
uninitialized. In the worst case it returns 0 which means the caller
will think the function succeeded.
Fixes: 1655cf8829d8 ("ARM: dma-mapping: Remove traces of NOMMU code")
Signed-off-by: Nathan Jones <nathanj439@gmail.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Chris has discovered and reported that v7_dma_inv_range() may corrupt
memory if address range is not aligned to cache line size.
Since the whole cache-v7m.S was lifted form cache-v7.S the same
observation applies to v7m_dma_inv_range(). So the fix just mirrors
what has been done for v7 with a little specific of M-class.
Cc: Chris Cole <chris@sageembedded.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This patch addresses possible memory corruption when
v7_dma_inv_range(start_address, end_address) address parameters are not
aligned to whole cache lines. This function issues "invalidate" cache
management operations to all cache lines from start_address (inclusive)
to end_address (exclusive). When start_address and/or end_address are
not aligned, the start and/or end cache lines are first issued "clean &
invalidate" operation. The assumption is this is done to ensure that any
dirty data addresses outside the address range (but part of the first or
last cache lines) are cleaned/flushed so that data is not lost, which
could happen if just an invalidate is issued.
The problem is that these first/last partial cache lines are issued
"clean & invalidate" and then "invalidate". This second "invalidate" is
not required and worse can cause "lost" writes to addresses outside the
address range but part of the cache line. If another component writes to
its part of the cache line between the "clean & invalidate" and
"invalidate" operations, the write can get lost. This fix is to remove
the extra "invalidate" operation when unaligned addressed are used.
A kernel module is available that has a stress test to reproduce the
issue and a unit test of the updated v7_dma_inv_range(). It can be
downloaded from
http://ftp.sageembedded.com/outgoing/linux/cache-test-20181107.tgz.
v7_dma_inv_range() is call by dmac_[un]map_area(addr, len, direction)
when the direction is DMA_FROM_DEVICE. One can (I believe) successfully
argue that DMA from a device to main memory should use buffers aligned
to cache line size, because the "clean & invalidate" might overwrite
data that the device just wrote using DMA. But if a driver does use
unaligned buffers, at least this fix will prevent memory corruption
outside the buffer.
Signed-off-by: Chris Cole <chris@sageembedded.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Pull parisc fix from Helge Deller:
"On parisc, use -ffunction-sections compiler option when building
32-bit kernel modules to avoid sysfs-warnings when loading such
modules.
This got broken with kernel v4.18"
* 'parisc-4.20-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Enable -ffunction-sections for modules on 32-bit kernel
After copy_optimized_instructions() copies several instructions
to the working buffer it tries to fix up the real RIP address, but it
adjusts the RIP-relative instruction with an incorrect RIP address
for the 2nd and subsequent instructions due to a bug in the logic.
This will break the kernel pretty badly (with likely outcomes such as
a kernel freeze, a crash, or worse) because probed instructions can refer
to the wrong data.
For example putting kprobes on cpumask_next() typically hits this bug.
cpumask_next() is normally like below if CONFIG_CPUMASK_OFFSTACK=y
(in this case nr_cpumask_bits is an alias of nr_cpu_ids):
<cpumask_next>:
48 89 f0 mov %rsi,%rax
8b 35 7b fb e2 00 mov 0xe2fb7b(%rip),%esi # ffffffff82db9e64 <nr_cpu_ids>
55 push %rbp
...
If we put a kprobe on it and it gets jump-optimized, it gets
patched by the kprobes code like this:
<cpumask_next>:
e9 95 7d 07 1e jmpq 0xffffffffa000207a
7b fb jnp 0xffffffff81f8a2e2 <cpumask_next+2>
e2 00 loop 0xffffffff81f8a2e9 <cpumask_next+9>
55 push %rbp
This shows that the first two MOV instructions were copied to a
trampoline buffer at 0xffffffffa000207a.
Here is the disassembled result of the trampoline, skipping
the optprobe template instructions:
# Dump of assembly code from 0xffffffffa000207a to 0xffffffffa00020ea:
54 push %rsp
...
48 83 c4 08 add $0x8,%rsp
9d popfq
48 89 f0 mov %rsi,%rax
8b 35 82 7d db e2 mov -0x1d24827e(%rip),%esi # 0xffffffff82db9e67 <nr_cpu_ids+3>
This dump shows that the second MOV accesses *(nr_cpu_ids+3) instead of
the original *nr_cpu_ids. This leads to a kernel freeze because
cpumask_next() always returns 0 and for_each_cpu() never ends.
Fix this by adding 'len' correctly to the real RIP address while
copying.
[ mingo: Improved the changelog. ]
Reported-by: Michael Rodin <michael@rodin.online>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org # v4.15+
Fixes: 63fef14fc98a ("kprobes/x86: Make insn buffer always ROX and use text_poke()")
Link: http://lkml.kernel.org/r/153504457253.22602.1314289671019919596.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Once the JITed images for each function in a multi-function program
are generated after the first three JIT passes, we only need to fix
the target address for the branch instruction corresponding to each
bpf-to-bpf function call.
This introduces the following optimizations for reducing the work
done by the JIT compiler when handling multi-function programs:
[1] Instead of doing two extra passes to fix the bpf function calls,
do just one as that would be sufficient.
[2] During the extra pass, only overwrite the instruction sequences
for the bpf-to-bpf function calls as everything else would still
remain exactly the same. This also reduces the number of writes
to the JITed image.
[3] Do not regenerate the prologue and the epilogue during the extra
pass as that would be redundant.
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
please pull the following for 4.20:
- Stefan fixes the polariy of the Wi-Fi reset GPIOs signals which would
break on Raspberry Pi 3B and 3B+
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Merge tag 'arm-soc/for-4.20/devicetree-fixes' of https://github.com/Broadcom/stblinux into fixes
This pull request contains Broadcom ARM-based SoCs Device Tree fixes,
please pull the following for 4.20:
- Stefan fixes the polariy of the Wi-Fi reset GPIOs signals which would
break on Raspberry Pi 3B and 3B+
* tag 'arm-soc/for-4.20/devicetree-fixes' of https://github.com/Broadcom/stblinux:
ARM: dts: bcm2837: Fix polarity of wifi reset GPIOs
Signed-off-by: Olof Johansson <olof@lixom.net>
There's a bug in dtc in checking for duplicate node names when there's
another section (e.g. "/ { };"). In this case, skeleton.dtsi provides
another section. Upon removal of skeleton.dtsi, the dtb fails to build
due to a duplicate node 'fixedregulator@0'. As both nodes were pretty
much the same 3.3V fixed regulator, it hasn't really mattered. Fix this
by renaming the nodes to something unique. In the process, drop the
unit-address which shouldn't be present wtihout reg property.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
cpu_is_mmp2() was equivalent to cpu_is_pj4(), wouldn't be correct for
multiplatform kernels. Fix it by also considering mmp_chip_id, as is
done for cpu_is_pxa168() and cpu_is_pxa910() above.
Moreover, it is only available with CONFIG_CPU_MMP2 and thus doesn't work
on DT-based MMP2 machines. Enable it on CONFIG_MACH_MMP2_DT too.
Note: CONFIG_CPU_MMP2 is only used for machines that use board files
instead of DT. It should perhaps be renamed. I'm not doing it now, because
I don't have a better idea.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
- kernelci awaits a working stdout-path.
Fix the path for reference board and bananapi-r64
- general propouse timer has issues with clocks that didn't
get probed early. Delete the DT node as the timer isn't
need, a ARM arch timer exists on the system.
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Merge tag 'v4.19-next-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux into fixes
DT mt7622:
- Kernelci awaits a working stdout-path.
Fix the path for reference board and bananapi-r64
- General propouse timer has issues with clocks that didn't
get probed early. Delete the DT node as the timer isn't
need, a ARM arch timer exists on the system.
* tag 'v4.19-next-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux:
arm64: dts: mt7622: Drop the general purpose timer node
arm64: dts: mt7622: fix no more console output on BPI-R64 board
arm64: dts: mt7622: fix no more console output on rfb1
Signed-off-by: Olof Johansson <olof@lixom.net>
The commit b1b8f45b3130 ("ARM: dts: bcm2837: Add missing GPIOs of Expander")
introduced a wifi power sequence. Unfortunately the polarity of the reset
GPIOs were wrong and broke the wifi support on Raspberry Pi 3 B and
later in 3 B+. This wasn't discovered before since the power sequence
takes only effect in case the relevant MMC driver is compiled as a module.
Fixes: b1b8f45b3130 ("ARM: dts: bcm2837: Add missing GPIOs of Expander")
Cc: stable@vger.kernel.org
Reported-by: Matthias Lueschner <lueschem@gmail.com>
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911443
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Pull sparc fixes from David Miller:
1) Some implicit switch fallthrough fixes from Stephen Rothwell.
2) Missing of_node_put() in various sparc drivers from Yangtao Li.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
drivers/tty: add missing of_node_put()
drivers/sbus/char: add of_node_put()
sbus: char: add of_node_put()
sparc32: supress another implicit-fallthrough warning
sparc32: suppress an implicit-fallthrough warning
sparc: suppress the implicit-fallthrough warning
arch/sparc: Use kzalloc_node
Gunnar Krueger reported a systemd-boot failure and bisected it down to:
e6e094e053af75 ("x86/acpi, x86/boot: Take RSDP address from boot params if available")
In case a broken boot loader doesn't clear its 'struct boot_params', clear
rsdp_addr in sanitize_boot_params().
Reported-by: Gunnar Krueger <taijian@posteo.de>
Tested-by: Gunnar Krueger <taijian@posteo.de>
Signed-off-by: Juergen Gross <jgross@suse.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@alien8.de
Cc: sstabellini@kernel.org
Fixes: e6e094e053af75 ("x86/acpi, x86/boot: Take RSDP address from boot params if available")
Link: http://lkml.kernel.org/r/20181203103811.17056-1-jgross@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
It's wrong to mask/unmask highest bit in addr to translate the vaddr
to paddr. We should use PAGE_OFFSET and PHYS_OFFSET.
Wrong implement:
return ((get_pgd()|(1<<31)) - PHYS_OFFSET) & ~1;
When PHYS_OFFSET=0xc0000000 and get_pgd() return 0xe0000000, it'll
return 0x60000000. It's wrong and should be 0xa0000000.
Now correct it to:
return ((get_pgd() - PHYS_OFFSET) & ~1) + PAGE_OFFSET;
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Volume is a little higher than usual due to a set of gpio fixes for
Davinci platforms that's been around a while, still seemed appropriate
to not hold off until next merge window.
Besides that it's the usual mix of minor fixes, mostly corrections of
small stuff in device trees.
Major stability-related one is the removal of a regulator from DT on
Rock960, since DVFS caused undervoltage. I expect it'll be restored once
they figure out the underlying issue.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Volume is a little higher than usual due to a set of gpio fixes for
Davinci platforms that's been around a while, still seemed appropriate
to not hold off until next merge window.
Besides that it's the usual mix of minor fixes, mostly corrections of
small stuff in device trees.
Major stability-related one is the removal of a regulator from DT on
Rock960, since DVFS caused undervoltage. I expect it'll be restored
once they figure out the underlying issue"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
MAINTAINERS: Remove unused Qualcomm SoC mailing list
ARM: davinci: dm644x: set the GPIO base to 0
ARM: davinci: da830: set the GPIO base to 0
ARM: davinci: dm355: set the GPIO base to 0
ARM: davinci: dm646x: set the GPIO base to 0
ARM: davinci: dm365: set the GPIO base to 0
ARM: davinci: da850: set the GPIO base to 0
gpio: davinci: restore a way to manually specify the GPIO base
ARM: davinci: dm644x: define gpio interrupts as separate resources
ARM: davinci: dm355: define gpio interrupts as separate resources
ARM: davinci: dm646x: define gpio interrupts as separate resources
ARM: davinci: dm365: define gpio interrupts as separate resources
ARM: davinci: da8xx: define gpio interrupts as separate resources
ARM: dts: at91: sama5d2: use the divided clock for SMC
ARM: dts: imx51-zii-rdu1: Remove EEPROM node
ARM: dts: rockchip: Remove @0 from the veyron memory node
arm64: dts: rockchip: Fix PCIe reset polarity for rk3399-puma-haikou.
arm64: dts: qcom: msm8998: Reserve gpio ranges on MTP
arm64: dts: sdm845-mtp: Reserve reserved gpios
arm64: dts: ti: k3-am654: Fix wakeup_uart reg address
...
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Merge tag 'for-linus-4.20a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- A revert of a previous commit as it is no longer necessary and has
shown to cause problems in some memory hotplug cases.
- Some small fixes and a minor cleanup.
- A patch for adding better diagnostic data in a very rare failure
case.
* tag 'for-linus-4.20a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
pvcalls-front: fixes incorrect error handling
Revert "xen/balloon: Mark unallocated host memory as UNUSABLE"
xen: xlate_mmu: add missing header to fix 'W=1' warning
xen/x86: add diagnostic printout to xen_mc_flush() in case of error
x86/xen: cleanup includes in arch/x86/xen/spinlock.c
Frank Schreiner reported, that since kernel 4.18 he faces sysfs-warnings
when loading modules on a 32-bit kernel. Here is one such example:
sysfs: cannot create duplicate filename '/module/nfs/sections/.text'
CPU: 0 PID: 98 Comm: modprobe Not tainted 4.18.0-2-parisc #1 Debian 4.18.10-2
Backtrace:
[<1017ce2c>] show_stack+0x3c/0x50
[<107a7210>] dump_stack+0x28/0x38
[<103f900c>] sysfs_warn_dup+0x88/0xac
[<103f8b1c>] sysfs_add_file_mode_ns+0x164/0x1d0
[<103f9e70>] internal_create_group+0x11c/0x304
[<103fa0a0>] sysfs_create_group+0x48/0x60
[<1022abe8>] load_module.constprop.35+0x1f9c/0x23b8
[<1022b278>] sys_finit_module+0xd0/0x11c
[<101831dc>] syscall_exit+0x0/0x14
This warning gets triggered by the fact, that due to commit 24b6c22504a2
("parisc: Build kernel without -ffunction-sections") we now get multiple .text
sections in the kernel modules for which sysfs_create_group() can't create
multiple virtual files.
This patch works around the problem by re-enabling the -ffunction-sections
compiler option for modules, while keeping it disabled for the non-module
kernel code.
Reported-by: Frank Scheiner <frank.scheiner@web.de>
Fixes: 24b6c22504a2 ("parisc: Build kernel without -ffunction-sections")
Cc: <stable@vger.kernel.org> # v4.18+
Signed-off-by: Helge Deller <deller@gmx.de>
Pull STIBP fallout fixes from Thomas Gleixner:
"The performance destruction department finally got it's act together
and came up with a cure for the STIPB regression:
- Provide a command line option to control the spectre v2 user space
mitigations. Default is either seccomp or prctl (if seccomp is
disabled in Kconfig). prctl allows mitigation opt-in, seccomp
enables the migitation for sandboxed processes.
- Rework the code to handle the conditional STIBP/IBPB control and
remove the now unused ptrace_may_access_sched() optimization
attempt
- Disable STIBP automatically when SMT is disabled
- Optimize the switch_to() logic to avoid MSR writes and invocations
of __switch_to_xtra().
- Make the asynchronous speculation TIF updates synchronous to
prevent stale mitigation state.
As a general cleanup this also makes retpoline directly depend on
compiler support and removes the 'minimal retpoline' option which just
pretended to provide some form of security while providing none"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
x86/speculation: Provide IBPB always command line options
x86/speculation: Add seccomp Spectre v2 user space protection mode
x86/speculation: Enable prctl mode for spectre_v2_user
x86/speculation: Add prctl() control for indirect branch speculation
x86/speculation: Prepare arch_smt_update() for PRCTL mode
x86/speculation: Prevent stale SPEC_CTRL msr content
x86/speculation: Split out TIF update
ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS
x86/speculation: Prepare for conditional IBPB in switch_mm()
x86/speculation: Avoid __switch_to_xtra() calls
x86/process: Consolidate and simplify switch_to_xtra() code
x86/speculation: Prepare for per task indirect branch speculation control
x86/speculation: Add command line control for indirect branch speculation
x86/speculation: Unify conditional spectre v2 print functions
x86/speculataion: Mark command line parser data __initdata
x86/speculation: Mark string arrays const correctly
x86/speculation: Reorder the spec_v2 code
x86/l1tf: Show actual SMT state
x86/speculation: Rework SMT state change
sched/smt: Expose sched_smt_present static key
...
- Fix mips_get_syscall_arg() to operate on the task specified when
detecting o32 tasks running on MIPS64 kernels.
- Fix some incorrect GPIO pin muxing for the MT7620 SoC.
- Update the linux-mips mailing list address.
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Merge tag 'mips_fixes_4.20_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull few more MIPS fixes from Paul Burton:
- Fix mips_get_syscall_arg() to operate on the task specified when
detecting o32 tasks running on MIPS64 kernels.
- Fix some incorrect GPIO pin muxing for the MT7620 SoC.
- Update the linux-mips mailing list address.
* tag 'mips_fixes_4.20_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MAINTAINERS: Update linux-mips mailing list address
MIPS: ralink: Fix mt7620 nd_sd pinmux
mips: fix mips_get_syscall_arg o32 check
- Reomve non-existing EEPROM device from imx51-zii-rdu1 board.
It was added by mistake.
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Merge tag 'imx-fixes-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
i.MX fixes for 4.20, round 2:
- Reomve non-existing EEPROM device from imx51-zii-rdu1 board.
It was added by mistake.
* tag 'imx-fixes-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx51-zii-rdu1: Remove EEPROM node
Signed-off-by: Olof Johansson <olof@lixom.net>
This set of fixes contains minor regression fixes for LogicPD dts files
for MMC pinctrl and interrupts. There is also one section annotation fix
that shows up with Clang, and a fix for an unitialized field for omap1.
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Merge tag 'omap-for-v4.20/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Few minor fixes for omaps for v4.20-rc cycle
This set of fixes contains minor regression fixes for LogicPD dts files
for MMC pinctrl and interrupts. There is also one section annotation fix
that shows up with Clang, and a fix for an unitialized field for omap1.
* tag 'omap-for-v4.20/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP1: ams-delta: Fix possible use of uninitialized field
ARM: dts: am3517-som: Fix WL127x Wifi interrupt
ARM: dts: logicpd-somlv: Fix interrupt on mmc3_dat1
ARM: dts: LogicPD Torpedo: Fix mmc3_dat1 interrupt
ARM: dts: am3517: Fix pinmuxing for CD on MMC1
ARM: OMAP2+: prm44xx: Fix section annotation on omap44xx_prm_enable_io_wakeup
Signed-off-by: Olof Johansson <olof@lixom.net>
This set of changes is needed to fix the broken GPIO support
for DaVinci boards in legacy mode after certain changes made to the
GPIO driver in 4.19, namely: commits 587f7a694f01 ("gpio: davinci: Use
dev name for label and automatic base selection") and eb3744a2dd01
("gpio: davinci: Do not assume continuous IRQ numbering").
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Merge tag 'davinci-fixes-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into fixes
DaVinci: fix GPIO breakage after v4.19
This set of changes is needed to fix the broken GPIO support
for DaVinci boards in legacy mode after certain changes made to the
GPIO driver in 4.19, namely: commits 587f7a694f01 ("gpio: davinci: Use
dev name for label and automatic base selection") and eb3744a2dd01
("gpio: davinci: Do not assume continuous IRQ numbering").
* tag 'davinci-fixes-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: dm644x: set the GPIO base to 0
ARM: davinci: da830: set the GPIO base to 0
ARM: davinci: dm355: set the GPIO base to 0
ARM: davinci: dm646x: set the GPIO base to 0
ARM: davinci: dm365: set the GPIO base to 0
ARM: davinci: da850: set the GPIO base to 0
gpio: davinci: restore a way to manually specify the GPIO base
ARM: davinci: dm644x: define gpio interrupts as separate resources
ARM: davinci: dm355: define gpio interrupts as separate resources
ARM: davinci: dm646x: define gpio interrupts as separate resources
ARM: davinci: dm365: define gpio interrupts as separate resources
ARM: davinci: da8xx: define gpio interrupts as separate resources
Signed-off-by: Olof Johansson <olof@lixom.net>
and fixup of the pcie reset polarity on puma-haikou.
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Merge tag 'v4.20-rockchip-dts64fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Removal of vdd_log regulator on rk960 to fix a stability issue
and fixup of the pcie reset polarity on puma-haikou.
* tag 'v4.20-rockchip-dts64fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: Fix PCIe reset polarity for rk3399-puma-haikou.
arm64: dts: rockchip: remove vdd_log from rock960 to fix a stability issues
Signed-off-by: Olof Johansson <olof@lixom.net>
firmware on these devices as issues identifying the formally correct
node.
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Merge tag 'v4.20-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Moving the veyron memory node from memory@0 back to memory, as the
firmware on these devices as issues identifying the formally correct
node.
* tag 'v4.20-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: rockchip: Remove @0 from the veyron memory node
Signed-off-by: Olof Johansson <olof@lixom.net>
