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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-04 16:12:19 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-04 16:12:19 +0300 |
| commit | d60ddd244215da7c695cba858427094d8e366aa7 (patch) | |
| tree | adc177f503e22b7d58d1a374cc2f2062e03d0fdc /arch/arm/kernel/traps.c | |
| parent | 71c3a888cbcaf453aecf8d2f8fb003271d28073f (diff) | |
| parent | 03a575a6a1d27e4e8c954ac0e4d2a8f72b12cbfb (diff) | |
| download | linux-d60ddd244215da7c695cba858427094d8e366aa7.tar.xz | |
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- decompressor updates
- prevention of out-of-bounds access while stacktracing
- fix a section mismatch warning with free_memmap()
- make kexec depend on MMU to avoid some build errors
- remove swapops stubs
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8954/1: NOMMU: remove stubs for swapops
ARM: 8952/1: Disable kmemleak on XIP kernels
ARM: 8951/1: Fix Kexec compilation issue.
ARM: 8949/1: mm: mark free_memmap as __init
ARM: 8948/1: Prevent OOB access in stacktrace
ARM: 8945/1: decompressor: use CONFIG option instead of cc-option
ARM: 8942/1: Revert "8857/1: efi: enable CP15 DMB instructions before cleaning the cache"
ARM: 8941/1: decompressor: enable CP15 barrier instructions in v7 cache setup code
Diffstat (limited to 'arch/arm/kernel/traps.c')
| -rw-r--r-- | arch/arm/kernel/traps.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index abb7dd7e656f..1e70e7227f0f 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -64,14 +64,16 @@ static void dump_mem(const char *, const char *, unsigned long, unsigned long); void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame) { + unsigned long end = frame + 4 + sizeof(struct pt_regs); + #ifdef CONFIG_KALLSYMS printk("[<%08lx>] (%ps) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from); #else printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from); #endif - if (in_entry_text(from)) - dump_mem("", "Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs)); + if (in_entry_text(from) && end <= ALIGN(frame, THREAD_SIZE)) + dump_mem("", "Exception stack", frame + 4, end); } void dump_backtrace_stm(u32 *stack, u32 instruction) |