syzbot


WARNING in cfg80211_change_iface
Status: fixed on 2021/04/09 19:46
Reported-by: syzbot+d2d412349f88521938aa@syzkaller.appspotmail.com
Fix commit: bae173563cbf wext: call cfg80211_change_iface() with wiphy lock held
First crash: 314d, last: 309d

Cause bisection: the cause commit could be any of (bisect log):
  2fe8ef106238 cfg80211: change netdev registration/unregistration semantics
  a05829a7222e cfg80211: avoid holding the RTNL when calling the driver
  38ec7c6b6bd6 virt_wifi: fix deadlock on RTNL

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/01/29 04:55 linux-next d03154e8bb6a 7df34f59 .config log report syz C WARNING in cfg80211_change_iface
ci-upstream-net-kasan-gce 2021/02/02 09:01 net-next 1a2b60f6f165 19e09687 .config log report info WARNING in cfg80211_change_iface
ci-upstream-net-kasan-gce 2021/01/28 11:00 net-next d1f3bdd4eaae eefc07f2 .config log report info WARNING in cfg80211_change_iface
ci-upstream-linux-next-kasan-gce-root 2021/01/29 04:12 linux-next d03154e8bb6a 7df34f59 .config log report info WARNING in cfg80211_change_iface