syzbot


INFO: rcu detected stall in ip_set_uadd
Status: fixed on 2020/04/15 17:19
Reported-by: syzbot+4b0e9d4ff3cf117837e5@syzkaller.appspotmail.com
Fix commit: f66ee0410b1c netfilter: ipset: Fix "INFO: rcu detected stall in hash_xxx" reports
First crash: 675d, last: 637d

Cause bisection: introduced by (bisect log) :
commit 23c42a403a9cfdbad6004a556c927be7dd61a8ee
Author: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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 (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/01/27 03:13 upstream a45ea48e2bcd dd56146d .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/01/25 08:13 upstream 6381b442836e 2e95ab33 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/01/24 05:50 upstream 4703d9119972 2e95ab33 .config log report syz C
ci-upstream-kasan-gce-386 2020/01/24 03:20 upstream 4703d9119972 2e95ab33 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/01/25 06:59 net 623c8d5c74c6 2e95ab33 .config log report syz C
ci-upstream-net-kasan-gce 2020/01/25 08:29 net-next 08a45c59f16e 2e95ab33 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/02/12 11:44 linux-next 129759899765 a75b198c .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/02/11 00:09 linux-next 2981de746b18 18847f55 .config log report syz C
ci-upstream-kasan-gce 2020/03/01 20:33 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce-root 2020/01/24 17:55 upstream 4703d9119972 2e95ab33 .config log report
ci-upstream-net-kasan-gce 2020/01/24 12:01 net-next 9bbc8be29d66 2e95ab33 .config log report