Re: [syzbot] possible deadlock in __jbd2_log_wait_for_space

From: syzbot
Date: Sat Nov 19 2022 - 05:31:13 EST


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