bisecting fixing commit since cd529693461026636f76d0395a42cb2439bbd368
building syzkaller on 098b5d530648147c744a7c2eb8b78c1307f9d3ce
testing commit cd529693461026636f76d0395a42cb2439bbd368
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6a9eed6bd98b87f0055f8345b7a5e9bfda7f9c651a68d5959a49b094345d2ef5
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD a6ca7c65b1376f7bb14979cb745d3da73c8de948
testing commit a6ca7c65b1376f7bb14979cb745d3da73c8de948
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 295a60b10317576d11b2010c6bc9574d479e7cea06f835f600cb2ce0ca73625b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m42.604914895s (build: 22m22.249691674s, test: 6m51.030790732s)
the crash still happens on HEAD
commit msg: Linux 4.14.260
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
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 0x0409 tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout