linux-kernel - Re: [syzbot] [overlayfs?] general protection fault in ovl_encode_real

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Date:   Mon, 02 Oct 2023 21:56:33 -0700
From:   syzbot <syzbot+2208f82282740c1c8915@...kaller.appspotmail.com>
To:     amir73il@...il.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-unionfs@...r.kernel.org,
        miklos@...redi.hu, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [overlayfs?] general protection fault in ovl_encode_real_fh

syzbot has bisected this issue to:

commit 16aac5ad1fa94894b798dd522c5c3a6a0628d7f0
Author: Amir Goldstein <amir73il@...il.com>
Date:   Sun Apr 23 16:02:04 2023 +0000

    ovl: support encoding non-decodable file handles

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11972062680000
start commit:   8a749fd1a872 Linux 6.6-rc4
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=13972062680000
console output: https://syzkaller.appspot.com/x/log.txt?x=15972062680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=57da1ac039c4c78a
dashboard link: https://syzkaller.appspot.com/bug?extid=2208f82282740c1c8915
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14877eb2680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13b701f6680000

Reported-by: syzbot+2208f82282740c1c8915@...kaller.appspotmail.com
Fixes: 16aac5ad1fa9 ("ovl: support encoding non-decodable file handles")

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