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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alpha/include	tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h	2019-03-28 14:31:56 -03:00
arc/include/uapi/asm	tools arch uapi: Copy missing unistd.h headers for arc, hexagon and riscv	2019-05-02 16:00:20 -04:00
arm/include	tools headers kvm: Sync kvm headers with the kernel sources	2019-12-02 12:54:13 -03:00
arm64/include	tools headers UAPI: Sync files changed by the memfd_secret new syscall	2021-07-14 10:05:35 -03:00
csky/include/uapi/asm	csky: Add support for libdw	2019-05-15 16:36:46 -03:00
h8300/include
hexagon/include/uapi/asm	tools arch uapi: Copy missing unistd.h headers for arc, hexagon and riscv	2019-05-02 16:00:20 -04:00
ia64/include	ia64: tools: remove duplicate definition of ia64_mf() on ia64	2021-04-16 16:10:37 -07:00
microblaze/include/uapi/asm
mips/include	perf tools: Copy uapi/asm/perf_regs.h from the kernel for MIPS	2021-06-01 10:07:46 -03:00
parisc/include/uapi/asm	parisc: Add MAP_UNINITIALIZED define	2020-10-15 08:10:39 +02:00
powerpc/include	tools include UAPI powerpc: Sync errno.h with the kernel headers	2021-05-10 09:01:00 -03:00
riscv/include/uapi/asm	Replace HTTP links with HTTPS ones: RISC-V	2020-07-30 11:37:40 -07:00
s390/include	tools headers UAPI s390: Sync ptrace.h kernel headers	2021-03-06 16:54:23 -03:00
sh/include	sh: remove sh5 support	2020-06-01 14:48:52 -04:00
sparc/include	tools headers UAPI: Update tools's copy of mman.h headers	2019-07-29 09:02:58 -03:00
x86	x86/insn: Use get_unaligned() instead of memcpy()	2021-11-18 19:16:30 +01:00
xtensa/include	tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h	2019-03-28 14:31:56 -03:00