xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/komeda: Fix bit check to import to value of proper type

Browse Source 
[ Upstream commit be3e477effba636ad25dcd244db264c6cd5c1f36 ]

KASAN found this problem. find_first_bit() expects to look at a
pointer pointing to a long, but we look at a u32 - this is going to be
an issue with endianness but, KSAN already flags this as out-of-bounds
stack reads. This fixes it by just importing inot a local long.

Signed-off-by: Carsten Haitzler <carsten.haitzler@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201218150812.68195-1-carsten.haitzler@foss.arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Carsten Haitzler
2021-02-04 13:11:02 +00:00
committed by Greg Kroah-Hartman
parent 5e8b58e27e
commit 7f9757005c
3 changed files with 22 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/arm/display/include/malidp_utils.h
View File

@@ -13,9 +13,6 @@
#define has_bit(nr, mask) (BIT(nr) & (mask))
#define has_bits(bits, mask) (((bits) & (mask)) == (bits))
#define dp_for_each_set_bit(bit, mask) \
for_each_set_bit((bit), ((unsigned long *)&(mask)), sizeof(mask) * 8)
#define dp_wait_cond(__cond, __tries, __min_range, __max_range) \
({ \
int num_tries = __tries; \