bisecting fixing commit since ce4d1565392b2dc8ea33032615c934c3dc6a32bb
building syzkaller on 6c236867ce33c0c16b102e02a08226d7eb9b2046
testing commit ce4d1565392b2dc8ea33032615c934c3dc6a32bb
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 8fbb9a52eadbcbfb9972e3a22b744acf29614d9279930fd8b98200a38dfb42dc
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 1ccc597f801cbecffcaed7f2d1f620ec48f6f8df
testing commit 1ccc597f801cbecffcaed7f2d1f620ec48f6f8df
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 1118c225938b6ad83456b21852420453827af4c24f17615ef0eab61c69c376af
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m19.371992s (build: 20m25.277145151s, test: 6m31.4920825s)
the crash still happens on HEAD
commit msg: Linux 4.14.283
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout