bisecting fixing commit since a35d65bedfbc38cffe2701798cd6810bbdf07892
building syzkaller on 6e821dbf79b49f1952fc147f237aa0f396790edc
testing commit a35d65bedfbc38cffe2701798cd6810bbdf07892
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 9208680ee5a739cd13953a7b32d5938349366b151519580ec4375d64dfc74b7d
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: 8707711f4a1392037a2c6cec6efb430e5f38b858d707abe89444ea02d1fc16c1
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m40.978853305s (build: 17m1.029742032s, test: 6m15.844427506s)
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