Re: [syzbot] [batman?] [bpf?] possible deadlock in lock_timer_base

On Tuesday, 19 March 2024 11:33:17 CET syzbot wrote:

syzbot has found a reproducer for the following issue on:

HEAD commit:    35c3e2791756 Revert "net: Re-use and set mono_delivery_tim..
git tree:       net
console output: https://syzkaller.appspot.com/x/log.txt?x=10569181180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6fb1be60a193d440
dashboard link: https://syzkaller.appspot.com/bug?extid=8983d6d4f7df556be565
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13d9fa4e180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=137afac9180000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/26b55a26fc12/disk-35c3e279.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/6f39fa55c828/vmlinux-35c3e279.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e1e0501539e6/bzImage-35c3e279.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8983d6d4f7df556be565@syzkaller.appspotmail.com

Sorry, this is a little bit off-topic. But how does sysbot figure out the 
subsystems (like "[batman?]"). Because neither the reproducer nor the 
backtrace nor the console output mention anything batman-adv related.

Kind regards,
	Sven