Commit c44572e0 authored by Thorsten Blum's avatar Thorsten Blum Committed by Thomas Bogendoerfer
Browse files

MIPS: Fix MAX_REG_OFFSET 



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: 40e084a5 ("MIPS: Add uprobes support.")
Suggested-by: default avatarMaciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: default avatarThorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent 7f74c066

arch/mips/include/asm/ptrace.h

+2 −1
Original line number Diff line number Diff line
@@ -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