bisecting fixing commit since 162b95d01320370b80cb2d5724cea4ae538ac740
building syzkaller on a2fe1cb58994e43fb14f141ecd6e6dcce9bb697a
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: be482d3fb9bd88f55e0f7b321cafeeec57df0cbd400b10b985952f5ada264623
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
testing commit 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2ed6d786f1ce0eb9efbbc6ccc2a3645d8107b01aaacafcac4af679aef4eca2f8
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m30.871055968s (build: 14m32.428074669s, test: 6m28.379688431s)
the crash still happens on HEAD
commit msg: Linux 4.14.284
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x0409 tx timeout
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