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authorKees Cook <keescook@chromium.org>2023-09-15 13:11:00 -0700
committerLee Jones <lee@kernel.org>2023-11-01 11:28:32 +0000
commit0847c33bafe5b58f2f223153c007c1e185f84f48 (patch)
tree94ba67c74508283fa5a9f788e562c584b93c1808 /drivers/leds
parentbcbadbb29cb6aa6f51505514ae635fd467ebca43 (diff)
leds: qcom-lpg: Annotate struct lpg_led with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct lpg_led. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20230915201059.never.086-kees@kernel.org Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/rgb/leds-qcom-lpg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/leds/rgb/leds-qcom-lpg.c b/drivers/leds/rgb/leds-qcom-lpg.c
index df469aaa7e6e..7d93e02a030a 100644
--- a/drivers/leds/rgb/leds-qcom-lpg.c
+++ b/drivers/leds/rgb/leds-qcom-lpg.c
@@ -173,7 +173,7 @@ struct lpg_led {
struct led_classdev_mc mcdev;
unsigned int num_channels;
- struct lpg_channel *channels[];
+ struct lpg_channel *channels[] __counted_by(num_channels);
};
/**