linux-kernel - Re: [syzbot] [gfs2?] WARNING: suspicious RCU usage in gfs2

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Date:   Fri, 20 Oct 2023 00:10:38 -0700
From:   syzbot <syzbot+3e5130844b0c0e2b4948@...kaller.appspotmail.com>
To:     agruenba@...hat.com, cluster-devel@...hat.com,
        gfs2@...ts.linux.dev, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, postmaster@...gon.onmicrosoft.com,
        rpeterso@...hat.com, syzkaller-bugs@...glegroups.com,
        viro@...iv.linux.org.uk
Subject: Re: [syzbot] [gfs2?] WARNING: suspicious RCU usage in gfs2_permission

syzbot has bisected this issue to:

commit 0abd1557e21c617bd13fc18f7725fc6363c05913
Author: Al Viro <viro@...iv.linux.org.uk>
Date:   Mon Oct 2 02:33:44 2023 +0000

    gfs2: fix an oops in gfs2_permission

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10b21c33680000
start commit:   2dac75696c6d Add linux-next specific files for 20231018
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=12b21c33680000
console output: https://syzkaller.appspot.com/x/log.txt?x=14b21c33680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6f8545e1ef7a2b66
dashboard link: https://syzkaller.appspot.com/bug?extid=3e5130844b0c0e2b4948
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=101c8d09680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11a07475680000

Reported-by: syzbot+3e5130844b0c0e2b4948@...kaller.appspotmail.com
Fixes: 0abd1557e21c ("gfs2: fix an oops in gfs2_permission")

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