Commit 9c3a2c9b authored by Kent Overstreet's avatar Kent Overstreet
Browse files

bcachefs: Disable asm memcpys when kmsan enabled 



kmsan doesn't know about inline assembly, obviously; this will close a
ton of syzbot bugs.

Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent 96232247

fs/bcachefs/util.h

+2 −2
Original line number Diff line number Diff line
@@ -431,7 +431,7 @@ static inline void memcpy_u64s_small(void *dst, const void *src, 
static inline void __memcpy_u64s(void *dst, const void *src,

				 unsigned u64s)

{

#ifdef CONFIG_X86_64

#if defined(CONFIG_X86_64) && !defined(CONFIG_KMSAN)

	long d0, d1, d2;



	asm volatile("rep ; movsq"
@@ -508,7 +508,7 @@ static inline void __memmove_u64s_up(void *_dst, const void *_src, 
	u64 *dst = (u64 *) _dst + u64s - 1;

	u64 *src = (u64 *) _src + u64s - 1;



#ifdef CONFIG_X86_64

#if defined(CONFIG_X86_64) && !defined(CONFIG_KMSAN)

	long d0, d1, d2;



	asm volatile("std ;\n"