Heiko Carstens 5c3b8f0575 s390/entry: Fix last breaking event handling in case of stack corruption ...

[ Upstream commit ae952eea6f ]

In case of stack corruption stack_invalid() is called and the expectation
is that register r10 contains the last breaking event address. This
dependency is quite subtle and broke a couple of years ago without that
anybody noticed.

Fix this by getting rid of the dependency and read the last breaking event
address from lowcore.

Fixes: 56e62a7370 ("s390: convert to generic entry")
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-05-18 08:24:47 +02:00

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syscalls

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vdso32

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vdso64

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.gitignore

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abs_lowcore.c

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alternative.c

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asm-offsets.c

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audit.c

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audit.h

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cache.c

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cert_store.c

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compat_audit.c

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compat_linux.c

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compat_linux.h

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compat_ptrace.h

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compat_signal.c

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cpacf.c

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cpcmd.c

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cpufeature.c

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crash_dump.c

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ctlreg.c

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debug.c

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diag.c

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dis.c

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dumpstack.c

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early_printk.c

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early.c

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ebcdic.c

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entry.h

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entry.S

s390/entry: Fix last breaking event handling in case of stack corruption

2025-05-18 08:24:47 +02:00

facility.c

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fpu.c

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ftrace.c

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ftrace.h

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guarded_storage.c

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head64.S

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hiperdispatch.c

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idle.c

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ima_arch.c

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ipl_vmparm.c

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ipl.c

s390/ipl: Fix never less than zero warning

2024-12-27 14:01:59 +01:00

irq.c

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jump_label.c

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kdebugfs.c

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kexec_elf.c

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kexec_image.c

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kprobes.c

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lgr.c

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machine_kexec_file.c

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machine_kexec_reloc.c

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machine_kexec.c

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Makefile

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mcount.S

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module.c

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nmi.c

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nospec-branch.c

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nospec-sysfs.c

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numa.c

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os_info.c

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perf_cpum_cf_events.c

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perf_cpum_cf.c

s390/cpumf: Fix double free on error in cpumf_pmu_event_init()

2025-04-20 10:16:02 +02:00

perf_cpum_sf.c

s390/cpumf: Fix double free on error in cpumf_pmu_event_init()

2025-04-20 10:16:02 +02:00

perf_event.c

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perf_pai_crypto.c

perf/core: Save raw sample data conditionally based on sample type

2025-02-08 09:56:53 +01:00

perf_pai_ext.c

perf/core: Save raw sample data conditionally based on sample type

2025-02-08 09:56:53 +01:00

perf_regs.c

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process.c

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processor.c

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ptrace.c

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reipl.S

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relocate_kernel.S

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rethook.c

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rethook.h

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runtime_instr.c

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setup.c

s390/sclp: Initialize sclp subsystem via arch_cpu_finalize_init()

2025-02-08 09:58:07 +01:00

signal.c

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smp.c

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stacktrace.c

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sthyi.c

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syscall.c

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sysinfo.c

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text_amode31.S

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time.c

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topology.c

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trace.c

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traps.c

s390/traps: Fix test_monitor_call() inline assembly

2025-03-13 13:01:58 +01:00

unwind_bc.c

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uprobes.c

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uv.c

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vdso.c

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vmcore_info.c

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vmlinux.lds.S

s390/fpu: Add fpc exception handler / remove fixup section again

2025-02-17 10:05:44 +01:00

vtime.c

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wti.c

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