linux-kernel - Re: KASAN: use-after-free Read in wdm_int

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Message-ID: <CAAeHK+yuUyz6P-3kHaJbA-KziwawKKDduz6=5KVgqnFZ_iUONA@mail.gmail.com>
Date:   Tue, 19 Nov 2019 15:32:40 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Oliver Neukum <oneukum@...e.com>
Cc:     syzbot <syzbot+1a3765ef3c0d49d36a75@...kaller.appspotmail.com>,
        baijiaju1990@...il.com, bigeasy@...utronix.de,
        Colin Ian King <colin.king@...onical.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        USB list <linux-usb@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        yuehaibing@...wei.com
Subject: Re: KASAN: use-after-free Read in wdm_int_callback

On Tue, Nov 19, 2019 at 3:17 PM Oliver Neukum <oneukum@...e.com> wrote:
>
> Am Dienstag, den 19.11.2019, 14:46 +0100 schrieb Andrey Konovalov:
> >
> > #syz dup: WARNING in wdm_write/usb_submit_urb
> >
> > https://syzkaller.appspot.com/bug?extid=d232cca6ec42c2edb3fc
>
> Hi,
>
> this is a bit odd. A fix for that bug went in quite some time ago.
> Is the kernel tree these tests are running on regularly updated?

Hi Oliver,

The fix went in a while ago indeed, and the original WARNING bug got
closed. But this bug was never marked to be somehow related to the fix
or the WARNING bug and therefore was never closed.

Thanks!