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

[syzbot]

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:         a650d389 bpf: Convert ringbuf map to rqspinlock
git tree:       bpf
console output: https://syzkaller.appspot.com/x/log.txt?x=17928870580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ea2b297a0891c87e
dashboard link: https://syzkaller.appspot.com/bug?extid=850aaf14624dc0c6d366
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.