bisecting fixing commit since ad8397a84e1e425e3f8221638cee2bfa237d9b2c
building syzkaller on 858ea628800647d5e5b68b11441e42b8ef5652c1
testing commit ad8397a84e1e425e3f8221638cee2bfa237d9b2c
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 332f56ff8e7acfdbb198542b95bd4d3d6b4d9131092b873aa4d89f2cc241a81a
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 964f3712e6a7447d9d3203f2be3f6c50e78ea179
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 26df262d5e6f08b20c1dc53b47b794ca40099ce1bc3f060698e563f5141a6141
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m52.991534619s (build: 16m46.359098221s, test: 6m38.028896657s)
the crash still happens on HEAD
commit msg: Linux 4.14.240
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: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout