linux-kernel - Re: [syzbot] KASAN: use-after-free Read in jbd2_journal_wait

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Message-ID: <0000000000004d049f05d7912725@google.com>
Date:   Tue, 08 Feb 2022 23:55:13 -0800
From:   syzbot <syzbot+afa2ca5171d93e44b348@...kaller.appspotmail.com>
To:     jack@...e.com, jack@...e.cz, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, riteshh@...ux.ibm.com,
        syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: Re: [syzbot] KASAN: use-after-free Read in jbd2_journal_wait_updates

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+afa2ca5171d93e44b348@...kaller.appspotmail.com

Tested on:

commit:         54ccc072 jbd2: Remove CONFIG_JBD2_DEBUG to update t_ma..
git tree:       https://github.com/riteshharjani/linux.git jbd2-kill-t-handle-lock-t2
kernel config:  https://syzkaller.appspot.com/x/.config?x=266de9da75c71a45
dashboard link: https://syzkaller.appspot.com/bug?extid=afa2ca5171d93e44b348
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: testing is done by a robot and is best-effort only.