syzbot has bisected this issue to:
commit 27861fc720be2c39b861d8bdfb68287f54de6855
Author: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>
Date: Thu Aug 21 16:26:00 2025 +0000
bpf: Drop rqspinlock usage in ringbuf
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=167eee34580000
start commit: dd9de524183a xsk: Fix immature cq descriptor production
git tree: bpf
final oops: https://syzkaller.appspot.com/x/report.txt?x=157eee34580000
console output: https://syzkaller.appspot.com/x/log.txt?x=117eee34580000
kernel config: https://syzkaller.appspot.com/x/.config?x=c321f33e4545e2a1
dashboard link: https://syzkaller.appspot.com/bug?extid=fa5c2814795b5adca240
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=142da862580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1588aef0580000
Reported-by: syzbot+fa5c2814795b5adca240@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 27861fc720be ("bpf: Drop rqspinlock usage in ringbuf")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
