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

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Message-ID: <1566228274.5663.29.camel@suse.com>
Date:   Mon, 19 Aug 2019 17:24:34 +0200
From:   Oliver Neukum <oneukum@...e.com>
To:     syzbot <syzbot+cfe6d93e0abab9a0de05@...kaller.appspotmail.com>,
        keescook@...omium.org, gustavo@...eddedor.com,
        andreyknvl@...gle.com, syzkaller-bugs@...glegroups.com,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: KASAN: use-after-free Read in iowarrior_disconnect

Am Montag, den 19.08.2019, 07:48 -0700 schrieb syzbot:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    d0847550 usb-fuzzer: main usb gadget fuzzer driver
> git tree:       https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=139be302600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=dbc9c80cc095da19
> dashboard link: https://syzkaller.appspot.com/bug?extid=cfe6d93e0abab9a0de05
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12fe6b02600000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1548189c600000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+cfe6d93e0abab9a0de05@...kaller.appspotmail.com
> 

#syz test: https://github.com/google/kasan.git d0847550


View attachment "0001-Revert-usb-iowarrior-fix-deadlock-on-disconnect.patch" of type "text/x-patch" (1340 bytes)