linux-kernel - Re: [syzbot] [gfs2?] BUG: unable to handle kernel NULL pointer dereference in gfs2_rindex

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Message-ID: <000000000000ac2378060f12234c@google.com>
Date: Tue, 16 Jan 2024 07:54:02 -0800
From: syzbot <syzbot+2b32df23ff6b5b307565@...kaller.appspotmail.com>
To: agruenba@...hat.com, axboe@...nel.dk, brauner@...nel.org, 
	cluster-devel@...hat.com, gfs2@...ts.linux.dev, jack@...e.cz, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	rpeterso@...hat.com, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [gfs2?] BUG: unable to handle kernel NULL pointer
 dereference in gfs2_rindex_update

syzbot suspects this issue was fixed by commit:

commit 6f861765464f43a71462d52026fbddfc858239a5
Author: Jan Kara <jack@...e.cz>
Date:   Wed Nov 1 17:43:10 2023 +0000

    fs: Block writes to mounted block devices

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12452f7be80000
start commit:   0a924817d2ed Merge tag '6.2-rc-smb3-client-fixes-part2' of..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=4e2d7bfa2d6d5a76
dashboard link: https://syzkaller.appspot.com/bug?extid=2b32df23ff6b5b307565
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14860f08480000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=174d24b0480000

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

#syz fix: fs: Block writes to mounted block devices

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