bisecting fixing commit since 4e68c9b0763ff55eaa69d6e519f07515f1c9037b
building syzkaller on f115ae985a399ddce060f448097b8068450a8f48
testing commit 4e68c9b0763ff55eaa69d6e519f07515f1c9037b
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 60fffbf22cadfa9af0a58483c467911d4c4b9e4d97c8361cb509b6b70dc9fa0d
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
testing commit 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 68673e72db2ccd75cceb5e44b85c01b6441855e52733c176a40b39ca32971ea8
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m22.783413259s (build: 16m14.307949011s, test: 6m33.876848333s)
the crash still happens on HEAD
commit msg: Linux 4.14.258
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout