linux/arch
Andrey Ryabinin 3ca17b1f36 lib/ubsan: remove null-pointer checks
With gcc-8 fsanitize=null become very noisy.  GCC started to complain
about things like &a->b, where 'a' is NULL pointer.  There is no NULL
dereference, we just calculate address to struct member.  It's
technically undefined behavior so UBSAN is correct to report it.  But as
long as there is no real NULL-dereference, I think, we should be fine.

-fno-delete-null-pointer-checks compiler flag should protect us from any
consequences.  So let's just no use -fsanitize=null as it's not useful
for us.  If there is a real NULL-deref we will see crash.  Even if
userspace mapped something at NULL (root can do this), with things like
SMAP should catch the issue.

Link: http://lkml.kernel.org/r/20180802153209.813-1-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-10 20:19:58 -07:00
..
alpha alpha: fix osf_wait4() breakage 2018-07-22 11:51:30 -07:00
arc arc: fix type warnings in arc/mm/cache.c 2018-07-30 11:48:50 -07:00
arm Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm 2018-08-01 15:01:26 -07:00
arm64 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-08-09 10:00:15 -07:00
c6x Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-06-04 20:27:54 -07:00
h8300 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-06-04 20:27:54 -07:00
hexagon hexagon: drop the unused variable zero_page_mask 2018-06-15 07:55:25 +09:00
ia64 mm: do not initialize TLB stack vma's with vma_init() 2018-08-01 13:43:38 -07:00
m68k m68k: fix "bad page state" oops on ColdFire boot 2018-07-02 10:05:13 +10:00
microblaze Microblaze patches for 4.18-rc3 2018-06-27 09:49:30 -07:00
mips One more fix for 4.18: 2018-07-28 12:32:28 -07:00
nds32 nds32: fix build error "relocation truncated to fit: R_NDS32_25_PCREL_RELA" when 2018-07-05 16:13:47 +08:00
nios2 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-06-04 20:27:54 -07:00
openrisc openrisc: entry: Fix delay slot exception detection 2018-07-01 16:48:24 +09:00
parisc lib/ubsan: remove null-pointer checks 2018-08-10 20:19:58 -07:00
powerpc powerpc fixes for 4.18 #5 2018-08-03 10:38:21 -07:00
riscv RISC-V: Fix the rv32i kernel build 2018-07-04 14:12:53 -07:00
s390 lib/ubsan: remove null-pointer checks 2018-08-10 20:19:58 -07:00
sh arch/*: Kconfig: fix documentation for NMI watchdog 2018-06-15 12:48:59 -03:00
sparc sparc: use asm-generic version of msi.h 2018-07-30 13:00:56 -07:00
um Solve a series of broken links for files under Documentation: 2018-06-17 05:25:18 +09:00
unicore32 docs: Fix some broken references 2018-06-15 18:10:01 -03:00
x86 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-08-09 10:00:15 -07:00
xtensa docs: Fix some broken references 2018-06-15 18:10:01 -03:00
.gitignore
Kconfig docs: Fix some broken references 2018-06-15 18:10:01 -03:00