linux-kernel - Re: [syzbot] possible deadlock in __jbd2_log_wait_for

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Message-ID: <0000000000004d959d05edd036ed@google.com>
Date:   Sat, 19 Nov 2022 02:23:23 -0800
From:   syzbot <syzbot+fa1bbda326271b8808c9@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] possible deadlock in __jbd2_log_wait_for_space

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: rcu detected stall in corrupted

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P5776 } 2683 jiffies s: 2765 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):


Tested on:

commit:         15f3bff1 Add linux-next specific files for 20221116
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
console output: https://syzkaller.appspot.com/x/log.txt?x=130bea4e880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ec2a1d4f50866178
dashboard link: https://syzkaller.appspot.com/bug?extid=fa1bbda326271b8808c9
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=15922a21880000