bisecting fixing commit since 050272a0423e68207fd2367831ae610680129062
building syzkaller on e3ecea2e7fc6b80cc715c596105f4cf890e7e2e6
testing commit 050272a0423e68207fd2367831ae610680129062
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 59ca64e99fe3e711f4adf82695bb5dd26ee5268acac8f3ffa91fdab03b498e8c
all runs: crashed: possible deadlock in rtnl_lock
testing current HEAD 66722c42ec916e92cadda46316f8f6e3fdcaedc6
testing commit 66722c42ec916e92cadda46316f8f6e3fdcaedc6
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4132479476c5adceebd99bebd02aedea9ea3bbcc5c5f61c4397c4bc31d3b5fa3
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m21.642572941s (build: 23m1.797683985s, test: 6m47.90225228s)
the crash still happens on HEAD
commit msg: Linux 4.14.256
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1