Brooke Basile <brookebasile@xxxxxxxxx> wrote: > Calls to usb_kill_anchored_urbs() after usb_kill_urb() on multiprocessor > systems create a race condition in which usb_kill_anchored_urbs() deallocates > the URB before the completer callback is called in usb_kill_urb(), resulting > in a use-after-free. > To fix this, add proper lock protection to usb_kill_urb() calls that can > possibly run concurrently with usb_kill_anchored_urbs(). > > Reported-by: syzbot+89bd486af9427a9fc605@xxxxxxxxxxxxxxxxxxxxxxxxx > Link: https://syzkaller.appspot.com/bug?id=cabffad18eb74197f84871802fd2c5117b61febf > Signed-off-by: Brooke Basile <brookebasile@xxxxxxxxx> > Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. 03fb92a432ea ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs() -- https://patchwork.kernel.org/patch/11769845/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
