bisecting fixing commit since 162b95d01320370b80cb2d5724cea4ae538ac740
building syzkaller on a2fe1cb58994e43fb14f141ecd6e6dcce9bb697a
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 64413d68cfc538d4d4b7ffac54552714e16f144b9492c8365491c3065522c1a3
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD dffb5c6ff09c51ed585e3e7665143df103867fc8
testing commit dffb5c6ff09c51ed585e3e7665143df103867fc8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0ab6369a6d99c2835446e46d1f537bfed8284d1f99f7eafc97de9f38db0ed90e
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 32m30.763368571s (build: 22m47.069684526s, test: 9m9.445482168s)
the crash still happens on HEAD
commit msg: Linux 4.14.280
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