diff options
| author | Andy Walls <awalls@radix.net> | 2008-05-12 15:01:27 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-05-14 02:56:45 -0300 |
| commit | 07c87a833e9ef92280ed24ab85cd4eb49cbca9c0 (patch) | |
| tree | 58ba6654998600742c352f12ed5ed1967e1f598e /drivers/media/video/cx18 | |
| parent | cba627a51a26eaed3526c423f5fd0410dd721ae2 (diff) | |
| download | lwn-07c87a833e9ef92280ed24ab85cd4eb49cbca9c0.tar.gz lwn-07c87a833e9ef92280ed24ab85cd4eb49cbca9c0.zip | |
V4L/DVB (7891): cx18/ivtv: fix open() kernel oops
Upon error conditions in cx18/ivtv_probe(), the code at the 'err:' label
leaves a NULL entry in cx18/ivtv_cards[]. This can cause a NULL pointer
de-reference in cx18/ivtv_v4l2_open() which is fixed by this patch.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/cx18')
| -rw-r--r-- | drivers/media/video/cx18/cx18-fileops.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c index 91eff6e671a7..0b3141db174b 100644 --- a/drivers/media/video/cx18/cx18-fileops.c +++ b/drivers/media/video/cx18/cx18-fileops.c @@ -662,6 +662,8 @@ int cx18_v4l2_open(struct inode *inode, struct file *filp) for (x = 0; cx == NULL && x < cx18_cards_active; x++) { /* find out which stream this open was on */ for (y = 0; y < CX18_MAX_STREAMS; y++) { + if (cx18_cards[x] == NULL) + continue; s = &cx18_cards[x]->streams[y]; if (s->v4l2dev && s->v4l2dev->minor == minor) { cx = cx18_cards[x]; |