INFO: rcu detected stall in hash_ip4_gc
Status: upstream: reported C repro on 2020/01/26 19:17
First crash: 23d, last: 23d

Cause bisection: introduced by (bisect log):

commit 23c42a403a9cfdbad6004a556c927be7dd61a8ee
Author: Jozsef Kadlecsik <>
Date: Sat Oct 27 13:07:40 2018 +0000

  netfilter: ipset: Introduction of new commands and protocol version 7

Crash: INFO: task hung in nfnetlink_rcv_msg (log)
Repro: C syz .config

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-386 2020/01/25 07:27 upstream 6381b442 2e95ab33 .config log report syz C,,,,,,,