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23 October 2021, 00:29:24 UTC
Revision 8d58f222e85f01da0c0e1fc1e77986c86de889e2 authored by Kees Cook on 08 May 2020, 01:36:23 UTC, committed by Linus Torvalds on 08 May 2020, 02:27:21 UTC 
ubsan: disable UBSAN_ALIGNMENT under COMPILE_TEST
 
The documentation for UBSAN_ALIGNMENT already mentions that it should
not be used on all*config builds (and for efficient-unaligned-access
architectures), so just refactor the Kconfig to correctly implement this
so randconfigs will stop creating insane images that freak out objtool
under CONFIG_UBSAN_TRAP (due to the false positives producing functions
that never return, etc).

Link: http://lkml.kernel.org/r/202005011433.C42EA3E2D@keescook
Fixes: 0887a7ebc977 ("ubsan: add trap instrumentation option")
Signed-off-by: Kees Cook <keescook@chromium.org>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
  Link: https://lore.kernel.org/linux-next/202004231224.D6B3B650@keescook/
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 17e3452
History
Tip revision: 8d58f222e85f01da0c0e1fc1e77986c86de889e2 authored by Kees Cook on 08 May 2020, 01:36:23 UTC
ubsan: disable UBSAN_ALIGNMENT under COMPILE_TEST
Tip revision: 8d58f22
File Mode Size
.gitignore -rw-r--r-- 62 bytes
Kconfig -rw-r--r-- 3.4 KB
Makefile -rw-r--r-- 4.1 KB
blacklist.c -rw-r--r-- 4.0 KB
blacklist.h -rw-r--r-- 84 bytes
blacklist_hashes.c -rw-r--r-- 166 bytes
blacklist_nohashes.c -rw-r--r-- 122 bytes
system_certificates.S -rw-r--r-- 828 bytes
system_keyring.c -rw-r--r-- 8.7 KB
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