Messages in this thread | | | Date | Tue, 4 Sep 2007 23:06:30 +0200 | From | Jens Axboe <> | Subject | Re: [PATCH] Fix a potential NULL pointer dereference in usbat_check_status() in drivers/usb/storage/shuttle_usbat.c |
| |
On Tue, Sep 04 2007, Simon Holm Thøgersen wrote: > tir, 04 09 2007 kl. 13:06 +0200, skrev Jens Axboe: > > On Tue, Sep 04 2007, Micah Gruber wrote: > > > This patch fixes a potential null dereference bug where we dereference us before a null check. This patch simply moves the dereferencing after the null check. > > > > > > Signed-off-by: Micah Gruber <micah.gruber@gmail.com> > > > > Be careful with stuff like that, if you actually look at the code, a us > > == NULL doesn't seem to be possible (or usbat_flash_transport() would > > have oopsed before). > > > If that is true, then > if (!us) > return USB_STOR_TRANSPORT_ERROR; > is utterly pointless.
Well that was the point I was trying to make, that test and return should be deleted instead.
-- Jens Axboe
- 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/
| |