linux-kernel - Re: [syzbot] [reiserfs?] KASAN: use-after-free Read in reiserfs_get_unused

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Message-ID: <000000000000baabe1060ffd60b0@google.com>
Date: Sun, 28 Jan 2024 00:33:04 -0800
From: syzbot <syzbot+04e8b36eaa27ecf7f840@...kaller.appspotmail.com>
To: axboe@...nel.dk, brauner@...nel.org, jack@...e.cz, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	reiserfs-devel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [reiserfs?] KASAN: use-after-free Read in reiserfs_get_unused_objectid

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=116501efe80000
start commit:   1e760fa3596e Merge tag 'gfs2-v6.3-rc3-fix' of git://git.ke..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=acdb62bf488a8fe5
dashboard link: https://syzkaller.appspot.com/bug?extid=04e8b36eaa27ecf7f840
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16d5c261c80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=155eba51c80000

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