Re: [syzbot] [ocfs2?] possible deadlock in ocfs2_finish_quota_recovery

From: Heming Zhao
Date: Thu Apr 17 2025 - 01:05:57 EST


On 4/17/25 12:21, syzbot wrote:
Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
unregister_netdevice: waiting for DEV to become free

unregister_netdevice: waiting for batadv0 to become free. Usage count = 3

This is another module's issue, and the deadlock issue disappeared.

- Heming


Tested on:

commit: 11376431 ocfs2: Stop quota recovery before disabling q..
git tree: https://github.com/zhaohem/linux jans_ocfs2
console output: https://syzkaller.appspot.com/x/log.txt?x=14183a3f980000
kernel config: https://syzkaller.appspot.com/x/.config?x=5348e7fd1b89a770
dashboard link: https://syzkaller.appspot.com/bug?extid=f59a1ae7b7227c859b8f
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.