Borislav Petkov 3357b8a431 x86/insn: Use get_unaligned() instead of memcpy() ... [ Upstream commit f96b467583 ] Use get_unaligned() instead of memcpy() to access potentially unaligned memory, which, when accessed through a pointer, leads to undefined behavior. get_unaligned() describes much better what is happening there anyway even if memcpy() does the job. In addition, since perf tool builds with -Werror, it would fire with: util/intel-pt-decoder/../../../arch/x86/lib/insn.c: In function '__insn_get_emulate_prefix': tools/include/../include/asm-generic/unaligned.h:10:15: error: packed attribute is unnecessary [-Werror=packed] 10 | const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr); \ because -Werror=packed would complain if the packed attribute would have no effect on the layout of the structure. In this case, that is intentional so disable the warning only for that compilation unit. That part is Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> No functional changes. Fixes: 5ba1071f75 ("x86/insn, tools/x86: Fix undefined behavior due to potential unaligned accesses") Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> Link: https://lkml.kernel.org/r/YVSsIkj9Z29TyUjE@zn.tnic Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-11-18 19:16:30 +01:00
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asm	tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy'	2021-05-10 09:01:00 -03:00
asm-generic	x86/insn: Use get_unaligned() instead of memcpy()	2021-11-18 19:16:30 +01:00
linux	tools: compiler-gcc.h: Guard error attribute use with __has_attribute	2021-09-13 15:51:41 -07:00
nolibc	tools/nolibc: Implement msleep()	2021-07-20 13:42:26 -07:00
tools	tools: bpf: fix license for a compat header file	2018-09-19 23:49:58 +02:00
trace/events	tools/lib/lockdep: Remove private kernel headers	2017-06-05 09:28:14 +02:00
uapi	tools include UAPI: Sync sound/asound.h copy with the kernel sources	2021-10-05 14:51:33 -03:00
vdso	tools headers: Synchronize linux/bits.h with the kernel sources	2020-04-14 11:40:05 -03:00