bisecting fixing commit since dffb5c6ff09c51ed585e3e7665143df103867fc8
building syzkaller on cb1ac2e75516d296f0ed6884292eeb72916a6271
testing commit dffb5c6ff09c51ed585e3e7665143df103867fc8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 38225baffc68ee35720d3b7fdfc1d9cb446c92224674de43782b2813a8ea3bad
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD ed2e96e119365437d6aa26a8a13eb39f77a43542
testing commit ed2e96e119365437d6aa26a8a13eb39f77a43542
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0ea3e6c687c68c5519dbc42e90360786eb358b45d349943b0044faffe6949c3f
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m12.56165528s (build: 19m7.853411606s, test: 6m23.674666156s)
the crash still happens on HEAD
commit msg: Linux 4.14.286
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
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1