bisecting fixing commit since a6b2dae3ee3a3f9f4db3fab5b4b9e493fecf4acd
building syzkaller on 500c23397f34dde583da6d31f9d9fd21cae289f8
testing commit a6b2dae3ee3a3f9f4db3fab5b4b9e493fecf4acd
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: fa35afc2ff187425720a70b16949d30d8a0cf5cc0b66caa4dc9e54e923284979
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 94cb1fed447ac8d328a8b50f9583df4ce70793e2
testing commit 94cb1fed447ac8d328a8b50f9583df4ce70793e2
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a4cfdaefe934c3a14399a7d9153ce9169a13430a26c9d9052724ae77aead6870
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m36.239390357s (build: 19m32.803480765s, test: 6m31.773936092s)
the crash still happens on HEAD
commit msg: Linux 4.14.242
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 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: hci0 command 0x0409 tx timeout
Bluetooth: hci0 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: hci2 command 0x041b tx timeout
Bluetooth: hci2 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: hci0 command 0x040f tx timeout
Bluetooth: hci0 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
Bluetooth: hci2 command 0x0419 tx timeout