Re: [syzbot] [bpf?] possible deadlock in queue_stack_map_push_elem

From: syzbot
Date: Thu Apr 10 2025 - 09:14:13 EST


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


Tested on:

commit: e403941b bpf: Convert ringbuf.c to rqspinlock
git tree: https://github.com/kkdwivedi/linux.git res-lock-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1511f74c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=ea2b297a0891c87e
dashboard link: https://syzkaller.appspot.com/bug?extid=252bc5c744d0bba917e1
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.