linux-kernel - Re: [syzbot] KASAN: use-after-free Read in em28xx_close

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Date:   Fri, 01 Oct 2021 01:55:07 -0700
From:   syzbot <syzbot+005037419ebdf14e1d87@...kaller.appspotmail.com>
To:     dan.carpenter@...cle.com, hdanton@...a.com,
        hverkuil-cisco@...all.nl, igormtorrente@...il.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, mchehab@...nel.org,
        mudongliangabcd@...il.com, stephen.s.brennan@...cle.com,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: [syzbot] KASAN: use-after-free Read in em28xx_close_extension

syzbot suspects this issue was fixed by commit:

commit 0766ec82e5fb26fc5dc6d592bc61865608bdc651
Author: Stephen Brennan <stephen.s.brennan@...cle.com>
Date:   Wed Sep 1 17:51:41 2021 +0000

    namei: Fix use after free in kern_path_locked

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17bf2a03300000
start commit:   fa54d366a6e4 Merge tag 'acpi-5.14-rc7' of git://git.kernel..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=96f0602203250753
dashboard link: https://syzkaller.appspot.com/bug?extid=005037419ebdf14e1d87
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14c086c5300000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12950bee300000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: namei: Fix use after free in kern_path_locked

For information about bisection process see: https://goo.gl/tpsmEJ#bisection