bisecting fixing commit since 4e68c9b0763ff55eaa69d6e519f07515f1c9037b
building syzkaller on f115ae985a399ddce060f448097b8068450a8f48
testing commit 4e68c9b0763ff55eaa69d6e519f07515f1c9037b
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 13d628be891fcc892d3a6b96d3351275e27275eafdd94ef3c7e144f7b139ec00
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD ed2e96e119365437d6aa26a8a13eb39f77a43542
testing commit ed2e96e119365437d6aa26a8a13eb39f77a43542
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: bf480df466c5ab59f0d868e3e35ab9bf42c886ddb8377ebf0f6e6c2f3c416440
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m12.430573617s (build: 18m0.503392595s, test: 6m35.846592958s)
the crash still happens on HEAD
commit msg: Linux 4.14.286
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout