diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2025-02-07 13:15:36 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-29 11:02:50 +0200 |
| commit | 9c5f85b72fa6d285c91e7d867b4c3643a6952efb (patch) | |
| tree | 36862ac76cad3519f025e676501c9e9cde2ce84e /arch/x86/include/asm/bug.h | |
| parent | eb6fd16b4fc4feb370c68ec17b59f6078f276a51 (diff) | |
x86/traps: Cleanup and robustify decode_bug()
[ Upstream commit c20ad96c9a8f0aeaf4e4057730a22de2657ad0c2 ]
Notably, don't attempt to decode an immediate when MOD == 3.
Additionally have it return the instruction length, such that WARN
like bugs can more reliably skip to the correct instruction.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20250207122546.721120726@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/bug.h')
| -rw-r--r-- | arch/x86/include/asm/bug.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h index 806649c7f23d..9a0f29be1a9e 100644 --- a/arch/x86/include/asm/bug.h +++ b/arch/x86/include/asm/bug.h @@ -22,8 +22,9 @@ #define SECOND_BYTE_OPCODE_UD2 0x0b #define BUG_NONE 0xffff -#define BUG_UD1 0xfffe -#define BUG_UD2 0xfffd +#define BUG_UD2 0xfffe +#define BUG_UD1 0xfffd +#define BUG_UD1_UBSAN 0xfffc #ifdef CONFIG_GENERIC_BUG |