diff options
| author | Steven Robertson <steven@strobe.cc> | 2010-07-21 16:38:44 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-13 13:30:58 -0700 |
| commit | 064b8f10414d51ae972f80518e320dc5cff9f1f8 (patch) | |
| tree | 5280ae9933b63877aebd48bf3c4a4d028a96cf80 | |
| parent | a6b37a9ed03585d0e1e132d424569003be2abba2 (diff) | |
USB: resizing usbmon binary interface buffer causes protection faults
commit 33d973ad88ceb83ed1449592b7574b5b5bb33ac6 upstream.
Enlarging the buffer size via the MON_IOCT_RING_SIZE ioctl causes
general protection faults. It appears the culprit is an incorrect
argument to mon_free_buff: instead of passing the size of the current
buffer being freed, the size of the new buffer is passed.
Use the correct size argument to mon_free_buff when changing the size of
the buffer.
Signed-off-by: Steven Robertson <steven@strobe.cc>
Acked-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/mon/mon_bin.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index 61c76b13f0f..56c93cac24c 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -1009,7 +1009,7 @@ static int mon_bin_ioctl(struct file *file, unsigned int cmd, unsigned long arg) mutex_lock(&rp->fetch_lock); spin_lock_irqsave(&rp->b_lock, flags); - mon_free_buff(rp->b_vec, size/CHUNK_SIZE); + mon_free_buff(rp->b_vec, rp->b_size/CHUNK_SIZE); kfree(rp->b_vec); rp->b_vec = vec; rp->b_size = size; |