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5ee3083307
android_kernel_xiaomi_sm8450/arch/s390/kernel
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Alexander Egorenkov 5ee3083307 s390/kexec: fix ipl report address for kdump 
commit c2337a40e04dde1692b5b0a46ecc59f89aaba8a1 upstream.

This commit addresses the following erroneous situation with file-based
kdump executed on a system with a valid IPL report.

On s390, a kdump kernel, its initrd and IPL report if present are loaded
into a special and reserved on boot memory region - crashkernel. When
a system crashes and kdump was activated before, the purgatory code
is entered first which swaps the crashkernel and [0 - crashkernel size]
memory regions. Only after that the kdump kernel is entered. For this
reason, the pointer to an IPL report in lowcore must point to the IPL report
after the swap and not to the address of the IPL report that was located in
crashkernel memory region before the swap. Failing to do so, makes the
kdump's decompressor try to read memory from the crashkernel memory region
which already contains the production's kernel memory.

The situation described above caused spontaneous kdump failures/hangs
on systems where the Secure IPL is activated because on such systems
an IPL report is always present. In that case kdump's decompressor tried
to parse an IPL report which frequently lead to illegal memory accesses
because an IPL report contains addresses to various data.

Cc: <stable@vger.kernel.org>
Fixes: 99feaa717e ("s390/kexec_file: Create ipl report and pass to next kernel")
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-18 11:44:54 +01:00
..
syscalls mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
vdso64 Kbuild updates for v5.10 2020-10-22 13:13:57 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
alternative.c s390: add automatic detection of the spectre defense 2018-03-28 08:38:24 +02:00
asm-offsets.c s390/dump: fix old lowcore virtual vs physical address confusion 2022-08-21 15:16:09 +02:00
audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
audit.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
base.S s390/base: remove unused s390_base_mcck_handler 2019-09-03 13:53:56 +02:00
cache.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_linux.c s390: use generic UID16 implementation 2019-01-18 09:33:18 +01:00
compat_linux.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_ptrace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_signal.c signal: Remove task parameter from force_sig 2019-05-27 09:36:28 -05:00
cpcmd.c s390/cpcmd: fix inline assembly register clobbering 2021-04-14 08:42:10 +02:00
crash_dump.c s390/crashdump: fix TOD programmable field size 2022-12-02 17:40:02 +01:00
debug.c s390/debug: fix debug area life cycle 2021-09-15 09:50:27 +02:00
diag.c s390/diag: convert to use DEFINE_SEQ_ATTRIBUTE macro 2020-09-17 14:11:03 +02:00
dis.c s390/disassembler: increase ebpf disasm buffer size 2021-05-11 14:47:11 +02:00
dumpstack.c kernel: rename show_stack_loglvl() => show_stack() 2020-06-09 09:39:13 -07:00
early_printk.c s390/sclp: remove unused sclp_early_printk_forced 2020-09-21 08:08:44 +02:00
early.c s390: make PCI mio support a machine flag 2021-09-18 13:40:22 +02:00
ebcdic.c s390: ebcdic: convert comments to UTF-8 2018-08-23 18:48:43 -07:00
entry.h s390 updates for the 5.10 merge window 2020-10-16 12:36:38 -07:00
entry.S s390: add support for TIF_NOTIFY_SIGNAL 2023-01-04 11:39:19 +01:00
fpu.c s390: correct some inline assembly constraints 2019-04-17 10:40:57 +02:00
ftrace.c s390/ftrace: fix ftrace_update_ftrace_func implementation 2021-07-28 14:35:42 +02:00
guarded_storage.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
head64.S s390/head64: correct init_task stack setup 2019-11-30 10:52:45 +01:00
idle.c sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
ima_arch.c s390/kexec_file: Disable kexec_load when IPLed secure 2019-04-29 10:44:03 +02:00
ipl_vmparm.c s390/ipl: provide uapi header for list directed IPL 2019-04-26 12:34:05 +02:00
ipl.c s390/kexec: fix return code handling 2021-11-26 10:39:18 +01:00
irq.c s390/irq: make init_ext_interrupts static 2020-03-11 14:18:44 +01:00
jump_label.c s390/jump_label: print real address in a case of a jump label bug 2021-09-18 13:40:22 +02:00
kdebugfs.c s390: no need to check return value of debugfs_create functions 2019-01-28 15:58:55 +01:00
kexec_elf.c kexec: Fix file verification on S390 2019-09-10 13:27:51 +01:00
kexec_image.c kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE 2019-08-19 21:54:15 -07:00
kprobes_insn_page.S s390/kprobes: move insn_page to text segment 2020-10-09 23:45:30 +02:00
kprobes.c s390 updates for the 5.10 merge window 2020-10-16 12:36:38 -07:00
lgr.c s390: convert to msecs_to_jiffies() 2020-06-29 16:31:46 +02:00
machine_kexec_file.c s390/kexec: fix ipl report address for kdump 2023-01-18 11:44:54 +01:00
machine_kexec_reloc.c s390/kaslr: add support for R_390_JMP_SLOT relocation type 2020-05-20 10:13:27 +02:00
machine_kexec.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
Makefile s390/kprobes: move insn_page to text segment 2020-10-09 23:45:30 +02:00
mcount.S s390/ftrace: fix ftrace_update_ftrace_func implementation 2021-07-28 14:35:42 +02:00
module.c s390/module: fix loading modules with a lot of relocations 2022-02-01 17:25:38 +01:00
nmi.c s390: remove critical section cleanup from entry.S 2020-05-28 12:21:54 +02:00
nospec-branch.c s390 updates for the 5.2 merge window 2019-05-06 16:42:54 -07:00
nospec-sysfs.c s390: Convert IS_ENABLED uses to __is_defined 2019-04-11 13:36:53 +02:00
numa.c s390/numa: move code to arch/s390/kernel 2020-08-11 18:16:55 +02:00
os_info.c s390/dump: fix old lowcore virtual vs physical address confusion 2022-08-21 15:16:09 +02:00
perf_cpum_cf_common.c s390/cpum_cf: move common functions into a separate file 2019-02-22 09:19:55 +01:00
perf_cpum_cf_diag.c s390/cpumf: Adjust registration of s390 PMU device drivers 2019-11-20 17:16:01 +01:00
perf_cpum_cf_events.c s390/cpum_cf,perf: change DFLT_CCERROR counter name 2020-07-21 13:53:56 +02:00
perf_cpum_cf.c s390/cpumf: Handle events cycles and instructions identical 2022-06-29 08:59:50 +02:00
perf_cpum_sf.c - fix system call exit path; avoid return to user space with 2020-11-17 11:22:03 -08:00
perf_event.c s390/perf: obtain sie_block from the right address 2022-06-09 10:21:24 +02:00
perf_regs.c perf/arch: Remove perf_sample_data::regs_user_copy 2020-11-09 18:12:34 +01:00
pgm_check.S s390: add 3f program exception handler 2020-09-14 10:08:07 +02:00
process.c arch: setup PF_IO_WORKER threads like PF_KTHREAD 2023-01-04 11:39:22 +01:00
processor.c s390/cpuinfo: do not skip info for CPUs without MHz feature 2020-03-23 13:41:55 +01:00
ptrace.c s390/ptrace: fix storage key handling 2020-08-17 13:17:14 +02:00
reipl.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
relocate_kernel.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
runtime_instr.c s390/runtime_instrumentation: fix storage key handling 2020-08-17 13:17:10 +02:00
setup.c s390/archrandom: simplify back to earlier design and initialize earlier 2022-07-07 17:52:16 +02:00
signal.c s390: add support for TIF_NOTIFY_SIGNAL 2023-01-04 11:39:19 +01:00
smp.c s390: preempt: Fix preempt_count initialization 2021-07-14 16:56:54 +02:00
stacktrace.c stacktrace: Remove reliable argument from arch_stack_walk() callback 2020-09-18 14:24:16 +01:00
sthyi.c s390/sthyi: Fix machine name validity indication 2018-10-15 12:17:00 +02:00
sys_s390.c s390: autogenerate compat syscall wrappers 2019-01-18 09:33:19 +01:00
sysinfo.c s390: no need to check return value of debugfs_create functions 2019-01-28 15:58:55 +01:00
time.c s390/vdso: copy tod_steering_delta value to vdso_data page 2021-04-07 15:00:10 +02:00
topology.c s390: convert to msecs_to_jiffies() 2020-06-29 16:31:46 +02:00
trace.c s390/ftrace: fix potential crashes when switching tracers 2020-04-22 16:20:55 +02:00
traps.c s390/traps: do not test MONITOR CALL without CONFIG_BUG 2021-07-25 14:36:17 +02:00
unwind_bc.c s390/unwind: stop gracefully at user mode pt_regs in irq stack 2019-12-18 23:29:26 +01:00
uprobes.c s390/uprobes: implement arch_uretprobe_is_alive() 2018-04-23 07:57:16 +02:00
uv.c s390: mm: Fix secure storage access exception handling 2021-07-14 16:55:43 +02:00
vdso.c s390: convert to GENERIC_VDSO 2020-08-26 18:47:21 +02:00
vmlinux.lds.S s390: fix nospec table alignments 2022-09-08 11:11:40 +02:00
vtime.c s390/vtime: fix increased steal time accounting 2021-03-25 09:04:05 +01:00