diff options
| author | Thorsten Blum <thorsten.blum@linux.dev> | 2025-04-27 13:34:24 +0200 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2025-04-30 20:04:59 +0200 |
| commit | c44572e0cc13c9afff83fd333135a0aa9b27ba26 (patch) | |
| tree | 01b0cd68b843a4214fb385fc157fa2a9b20929bb | |
| parent | 7f74c066e5d920b3a2f0f936060984e3b3709250 (diff) | |
| download | linux-mips-fixes.tar.gz | |
MIPS: Fix MAX_REG_OFFSETmips-fixes_6.15_1mips-fixes
Fix MAX_REG_OFFSET to point to the last register in 'pt_regs' and not to
the marker itself, which could allow regs_get_register() to return an
invalid offset.
Fixes: 40e084a506eb ("MIPS: Add uprobes support.")
Suggested-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
| -rw-r--r-- | arch/mips/include/asm/ptrace.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h index 85fa9962266a2b..ef72c46b556887 100644 --- a/arch/mips/include/asm/ptrace.h +++ b/arch/mips/include/asm/ptrace.h @@ -65,7 +65,8 @@ static inline void instruction_pointer_set(struct pt_regs *regs, /* Query offset/name of register from its name/offset */ extern int regs_query_register_offset(const char *name); -#define MAX_REG_OFFSET (offsetof(struct pt_regs, __last)) +#define MAX_REG_OFFSET \ + (offsetof(struct pt_regs, __last) - sizeof(unsigned long)) /** * regs_get_register() - get register value from its offset |