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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-26 20:09:20 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-26 20:09:20 +0300 |
| commit | 5bb7b2107f8c8e97750a36a723f3f74f819f6ff1 (patch) | |
| tree | a721a3a54b7fa24aa9083671d44a94b3a8c2481d /tools/arch/x86 | |
| parent | 3a398acc56dd7592eba081ce1ea356151ab90e2d (diff) | |
| parent | 5ba1071f7554c4027bdbd712a146111de57918de (diff) | |
| download | linux-5bb7b2107f8c8e97750a36a723f3f74f819f6ff1.tar.xz | |
Merge tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for X86:
- Prevent sending the wrong signal when protection keys are enabled
and the kernel handles a fault in the vsyscall emulation.
- Invoke early_reserve_memory() before invoking e820_memory_setup()
which is required to make the Xen dom0 e820 hooks work correctly.
- Use the correct data type for the SETZ operand in the EMQCMDS
instruction wrapper.
- Prevent undefined behaviour to the potential unaligned accesss in
the instruction decoder library"
* tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/insn, tools/x86: Fix undefined behavior due to potential unaligned accesses
x86/asm: Fix SETZ size enqcmds() build failure
x86/setup: Call early_reserve_memory() earlier
x86/fault: Fix wrong signal when vsyscall fails with pkey
Diffstat (limited to 'tools/arch/x86')
| -rw-r--r-- | tools/arch/x86/lib/insn.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/arch/x86/lib/insn.c b/tools/arch/x86/lib/insn.c index c41f95815480..797699462cd8 100644 --- a/tools/arch/x86/lib/insn.c +++ b/tools/arch/x86/lib/insn.c @@ -37,10 +37,10 @@ ((insn)->next_byte + sizeof(t) + n <= (insn)->end_kaddr) #define __get_next(t, insn) \ - ({ t r = *(t*)insn->next_byte; insn->next_byte += sizeof(t); leXX_to_cpu(t, r); }) + ({ t r; memcpy(&r, insn->next_byte, sizeof(t)); insn->next_byte += sizeof(t); leXX_to_cpu(t, r); }) #define __peek_nbyte_next(t, insn, n) \ - ({ t r = *(t*)((insn)->next_byte + n); leXX_to_cpu(t, r); }) + ({ t r; memcpy(&r, (insn)->next_byte + n, sizeof(t)); leXX_to_cpu(t, r); }) #define get_next(t, insn) \ ({ if (unlikely(!validate_next(t, insn, 0))) goto err_out; __get_next(t, insn); }) |