* Re: BUG null dereference in driver ./drivers/usb/serial/mos7840.c
2009-12-21 19:51 BUG null dereference in driver ./drivers/usb/serial/mos7840.c Alexander Strakh
@ 2009-12-21 16:20 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2009-12-21 16:20 UTC (permalink / raw)
To: Alexander Strakh; +Cc: Greg Kroah-Hartman, linux-usb, linux-kernel
On Mon, Dec 21, 2009 at 07:51:09PM +0000, Alexander Strakh wrote:
> KERNEL_VERSION: 2.6.32
> SUBJECT: null derefernce in function mos7840_bulk_in_callback
> SUBSCRIBE:
> In driver drivers/usb/serial/mos7840.c in function
> mos7840_bulk_in_callback:
>
> 1. If in line 697 mos7840_port = NULL then we goto line 699
How can that happen?
> 2. In line 699 we have null dereference.
>
> 696 mos7840_port = urb->context;
> 697 if (!mos7840_port) {
> 698 dbg("%s", "NULL mos7840_port pointer");
> 699 mos7840_port->read_urb_busy = false;
> 700 return;
> 701 }
>
> Found by Linux Device Drivers Verification Project (Svace Detector)
What is this?
Are you also going to send patches for stuff like this?
thanks,
greg k-h
^ permalink raw reply [flat|nested] 2+ messages in thread
* BUG null dereference in driver ./drivers/usb/serial/mos7840.c
@ 2009-12-21 19:51 Alexander Strakh
2009-12-21 16:20 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Alexander Strakh @ 2009-12-21 19:51 UTC (permalink / raw)
To: Greg Kroah-Hartman, Greg Kroah-Hartman, linux-usb, linux-kernel
KERNEL_VERSION: 2.6.32
SUBJECT: null derefernce in function mos7840_bulk_in_callback
SUBSCRIBE:
In driver drivers/usb/serial/mos7840.c in function
mos7840_bulk_in_callback:
1. If in line 697 mos7840_port = NULL then we goto line 699
2. In line 699 we have null dereference.
696 mos7840_port = urb->context;
697 if (!mos7840_port) {
698 dbg("%s", "NULL mos7840_port pointer");
699 mos7840_port->read_urb_busy = false;
700 return;
701 }
Found by Linux Device Drivers Verification Project (Svace Detector)
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-12-21 19:51 BUG null dereference in driver ./drivers/usb/serial/mos7840.c Alexander Strakh
2009-12-21 16:20 ` Greg KH
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