Messages in this thread Patch in this message | | | From | Willy Tarreau <> | Date | Sat, 13 Oct 2007 17:28:43 +0200 | Subject | [2.6.20.21 review 21/35] V4L: cx88: Avoid a NULL pointer dereference during mpeg_open() |
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(cherry picked from commit 48200baeab95fd39a7f4c4f3536c7142a64ac335)
[PATCH] V4L: cx88: Avoid a NULL pointer dereference during mpeg_open()
Bug: With a hardware encoder board installed as cx88[1] and a non-encoder boards installed as cx88[0], an OOPS is generated during cx8802_get_device() called from mpeg_open().
Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- drivers/media/video/cx88/cx88-mpeg.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
Index: 2.6/drivers/media/video/cx88/cx88-mpeg.c =================================================================== --- 2.6.orig/drivers/media/video/cx88/cx88-mpeg.c +++ 2.6/drivers/media/video/cx88/cx88-mpeg.c @@ -556,7 +556,7 @@ struct cx8802_dev * cx8802_get_device(st list_for_each(list,&cx8802_devlist) { h = list_entry(list, struct cx8802_dev, devlist); - if (h->mpeg_dev->minor == minor) + if (h->mpeg_dev && h->mpeg_dev->minor == minor) return h; } -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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