syzbot


possible deadlock in cfg80211_netdev_notifier_call
Status: fixed on 2021/04/09 19:46
Reported-by: syzbot+2ae0ca9d7737ad1a62b7@syzkaller.appspotmail.com
Fix commit: 40c575d1ec71 cfg80211: fix netdev registration deadlock
First crash: 237d, last: 168d

Cause bisection: introduced by (bisect log) :
commit cc9327f3b085ba5be5639a5ec3ce5b08a0f14a7c
Author: Mike Rapoport <rppt@linux.ibm.com>
Date: Thu Jan 28 07:42:40 2021 +0000

  mm: introduce memfd_secret system call to create "secret" memory areas

Crash: possible deadlock in cfg80211_netdev_notifier_call (log)
Repro: syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream possible deadlock in cfg80211_netdev_notifier_call (2) 2 125d 136d 21/22 upstream: reported on 2021/05/10 12:20

Sample crash report:

Crashes (13):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2021/01/31 16:59 net-next 14e8e0f60088 fc9fd31e .config log report syz possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-linux-next-kasan-gce-root 2021/01/30 18:14 linux-next b01f250d83f6 fc9fd31e .config log report syz possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-this-kasan-gce 2021/04/08 09:06 net 5219d6012d46 6a81331a .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-this-kasan-gce 2021/04/07 02:42 net 0f6925b3e8da 6a81331a .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-kasan-gce 2021/04/01 23:02 net-next 040806343bb4 6a81331a .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-kasan-gce 2021/01/31 23:05 net-next 14e8e0f60088 fc9fd31e .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-kasan-gce 2021/01/31 15:05 net-next 14e8e0f60088 fc9fd31e .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-kasan-gce 2021/01/31 01:16 net-next 14e8e0f60088 fc9fd31e .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-kasan-gce 2021/01/30 09:00 net-next 46eb3c108fe1 fc9fd31e .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-kasan-gce 2021/01/30 04:47 net-next 46eb3c108fe1 fc9fd31e .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-kasan-gce 2021/01/29 12:09 net-next 462512824f90 6593fd32 .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-net-kasan-gce 2021/01/29 05:07 net-next 462512824f90 7df34f59 .config log report info possible deadlock in cfg80211_netdev_notifier_call
ci-upstream-linux-next-kasan-gce-root 2021/01/30 16:43 linux-next b01f250d83f6 fc9fd31e .config log report info possible deadlock in cfg80211_netdev_notifier_call