When CONFIG_KASAN is set, inlining of functions with local variables causes excessive stack usage:
drivers/media/i2c/ks0127.c: In function 'ks0127_s_routing': drivers/media/i2c/ks0127.c:541:1: error: the frame size of 3136 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
Marking one functions as noinline_for_kasan solves the problem in this driver.
Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/media/i2c/ks0127.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/i2c/ks0127.c b/drivers/media/i2c/ks0127.c index ab536c4a7115..eb2fccdc0602 100644 --- a/drivers/media/i2c/ks0127.c +++ b/drivers/media/i2c/ks0127.c @@ -349,7 +349,7 @@ static void ks0127_write(struct v4l2_subdev *sd, u8 reg, u8 val)
/* generic bit-twiddling */ -static void ks0127_and_or(struct v4l2_subdev *sd, u8 reg, u8 and_v, u8 or_v) +static noinline_for_kasan void ks0127_and_or(struct v4l2_subdev *sd, u8 reg, u8 and_v, u8 or_v) { struct ks0127 *ks = to_ks0127(sd);