From: Kalle Valo <kvalo@codeaurora.org>
To: Brooke Basile <brookebasile@gmail.com>
Cc: davem@davemloft.net, kuba@kernel.org, gregkh@linuxfoundation.org,
linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org,
ath9k-devel@qca.qualcomm.com, syzkaller-bugs@googlegroups.com,
Brooke Basile <brookebasile@gmail.com>,
syzbot+89bd486af9427a9fc605@syzkaller.appspotmail.com
Subject: Re: [PATCH] wireless: ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs()
Date: Mon, 21 Sep 2020 13:05:58 +0000 (UTC) [thread overview]
Message-ID: <20200921130558.F092DC43385@smtp.codeaurora.org> (raw)
In-Reply-To: <20200911071427.32354-1-brookebasile@gmail.com>
Brooke Basile <brookebasile@gmail.com> 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@syzkaller.appspotmail.com
> Link: https://syzkaller.appspot.com/bug?id=cabffad18eb74197f84871802fd2c5117b61febf
> Signed-off-by: Brooke Basile <brookebasile@gmail.com>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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
next prev parent reply other threads:[~2020-09-21 13:08 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-11 7:14 [PATCH] wireless: ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs() Brooke Basile
2020-09-20 2:03 ` Brooke Basile
2020-09-21 13:05 ` Kalle Valo [this message]
[not found] ` <20200921130559.005D8C43382@smtp.codeaurora.org>
2020-09-21 23:04 ` Brooke Basile
2021-03-30 19:36 ` Memory leak in ath9k_hif_usb_dealloc_tx_urbs() Pavel Skripkin
2021-03-31 6:28 ` Greg KH
2021-04-27 11:35 ` Atul Gopinathan
2021-04-27 11:50 ` Greg KH
2021-04-27 12:04 ` Pavel Skripkin
2021-04-27 12:29 ` Pavel Skripkin
2021-04-27 13:01 ` Atul Gopinathan
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