[PATCH AUTOSEL 4.19 09/35] media: gspca/sq905.c: fix uninitialized variable
From: Sasha Levin <sashal@kernel.org>
Date: 2021-05-03 17:00:36
Also in:
linux-media, lkml
Subsystem:
gspca usb webcam driver, media input infrastructure (v4l/dvb), the rest · Maintainers:
Hans Verkuil, Mauro Carvalho Chehab, Linus Torvalds
From: Hans Verkuil <redacted> [ Upstream commit eaaea4681984c79d2b2b160387b297477f0c1aab ] act_len can be uninitialized if usb_bulk_msg() returns an error. Set it to 0 to avoid a KMSAN error. Signed-off-by: Hans Verkuil <redacted> Reported-by: syzbot+a4e309017a5f3a24c7b3@syzkaller.appspotmail.com Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/media/usb/gspca/sq905.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/usb/gspca/sq905.c b/drivers/media/usb/gspca/sq905.c
index ffea9c35b0a0..13676af42cfc 100644
--- a/drivers/media/usb/gspca/sq905.c
+++ b/drivers/media/usb/gspca/sq905.c@@ -167,7 +167,7 @@ static int sq905_read_data(struct gspca_dev *gspca_dev, u8 *data, int size, int need_lock) { int ret; - int act_len; + int act_len = 0; gspca_dev->usb_buf[0] = '\0'; if (need_lock)
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2.30.2