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Russell King (Oracle) ccf56ea52b ARM: findbit: fix overflowing offset 
[ Upstream commit ec85bd369f ]

When offset is larger than the size of the bit array, we should not
attempt to access the array as we can perform an access beyond the
end of the array. Fix this by changing the pre-condition.

Using "cmp r2, r1; bhs ..." covers us for the size == 0 case, since
this will always take the branch when r1 is zero, irrespective of
the value of r2. This means we can fix this bug without adding any
additional code!

Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-21 15:15:32 +02:00
..
ashldi3.S Revert "arm: move exports to definitions" 2016-11-23 10:00:03 +00:00
ashrdi3.S Revert "arm: move exports to definitions" 2016-11-23 10:00:03 +00:00
backtrace-clang.S arm/asm: add loglvl to c_backtrace() 2020-06-09 09:39:10 -07:00
backtrace.S arm/asm: add loglvl to c_backtrace() 2020-06-09 09:39:10 -07:00
bitops.h ARM: 8843/1: use unified assembler in headers 2019-02-26 11:26:06 +00:00
bswapsdi2.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
call_with_stack.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
changebit.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
clear_user.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
clearbit.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
copy_from_user.S ARM: 8958/1: rename missed uaccess .fixup section 2020-02-21 17:03:21 +00:00
copy_page.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
copy_template.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
copy_to_user.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
csumipv6.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
csumpartial.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
csumpartialcopy.S arm: propagate the calling convention changes down to csum_partial_copy_from_user() 2020-08-20 15:45:16 -04:00
csumpartialcopygeneric.S arm: propagate the calling convention changes down to csum_partial_copy_from_user() 2020-08-20 15:45:16 -04:00
csumpartialcopyuser.S arm: propagate the calling convention changes down to csum_partial_copy_from_user() 2020-08-20 15:45:16 -04:00
delay-loop.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
delay.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
div64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
findbit.S ARM: findbit: fix overflowing offset 2022-08-21 15:15:32 +02:00
getuser.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
io-readsb.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
io-readsl.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
io-readsw-armv3.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
io-readsw-armv4.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
io-writesb.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
io-writesl.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
io-writesw-armv3.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
io-writesw-armv4.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
lib1funcs.S ARM: 8844/1: use unified assembler in assembly files 2019-02-26 11:26:07 +00:00
lshrdi3.S Revert "arm: move exports to definitions" 2016-11-23 10:00:03 +00:00
Makefile ARM: 8900/1: UNWINDER_FRAME_POINTER implementation for Clang 2019-08-29 07:58:01 +01:00
memchr.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
memcpy.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
memmove.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
memset.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
muldi3.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
putuser.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
setbit.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
strchr.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
strrchr.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
testchangebit.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
testclearbit.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
testsetbit.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
uaccess_with_memcpy.c mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
ucmpdi2.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
xor-neon.c ARM: crypto: comment out gcc warning that breaks clang builds 2022-08-03 12:00:49 +02:00