bisecting fixing commit since 964f3712e6a7447d9d3203f2be3f6c50e78ea179
building syzkaller on fd5118098a3df4301eba91aeca37119ccb209403
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 973f12bfa6dfc43d6ceaa2b85f6d70fb5e8d8b45128964daa8883a0ebe6ad830
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD af1af6ebca0e28a97e5f802b9da695678fcd226a
testing commit af1af6ebca0e28a97e5f802b9da695678fcd226a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a543b04c7e34030ebdc9e9cb80508129719c0ba167d8706731bfd3d0fe9d9bd5
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 28m16.839147691s (build: 21m20.253730019s, test: 6m8.295530791s)
the crash still happens on HEAD
commit msg: Linux 4.14.274
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout