bisecting fixing commit since 12cd844a39ed16aa183a820a54fe6f9a0bb4cd14
building syzkaller on 749688d22abef3f3cb9a0480e15c19a3f2ed8e13
testing commit 12cd844a39ed16aa183a820a54fe6f9a0bb4cd14
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1d1bcbaaf2a18fa31b57d2af078fb919ee0e579bdb96c06c7f59181ac1f4342f
all runs: crashed: WARNING in ipvlan_unregister_nf_hook
testing current HEAD 46914f96189be290174e378c6bf9ccadfdb9ca1e
testing commit 46914f96189be290174e378c6bf9ccadfdb9ca1e
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2c1118dc7cf039b0d9c94b832f3036b24b0dcb509a65c9bfbd07769729a579f5
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m47.021004862s (build: 22m22.75300929s, test: 6m17.242445702s)
the crash still happens on HEAD
commit msg: Linux 4.14.243
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1