bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on f24824d3d54060a7d878eeb35c47f85dab84966a
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 337f84afeb3787e5a3a60d0e5c25d85f9b24c05a62d3038f5a69a3ca93ba175c
all runs: crashed: WARNING in drv_remove_interface
testing current HEAD bbb957e1bd4a337c0d10d599d284a7475bca47cb
testing commit bbb957e1bd4a337c0d10d599d284a7475bca47cb
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: de37ab54b48aa436646aef8bbab2d732f5d0d68eb9c3031032ad0b4d8283d741
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m26.113811886s (build: 18m30.519591057s, test: 7m10.433927142s)
the crash still happens on HEAD
commit msg: Linux 4.14.263
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout