bisecting fixing commit since d7e78d08fa77acdea351c8f628f49ca9a0e1029a building syzkaller on abf9ba4fc75d9b29af15625d44dcfc1360fad3b7 testing commit d7e78d08fa77acdea351c8f628f49ca9a0e1029a compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: fef391e215a708e8697104239e8b3906243aedc00d26b6eb690fbcf394d4f598 all runs: crashed: possible deadlock in rtnl_lock testing current HEAD af48f51cb5934738a3ee97e951d7dededf029488 testing commit af48f51cb5934738a3ee97e951d7dededf029488 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 397e28cef4d04b28084f07428b4f528bcc5d4265384099cbf6ff95f727678798 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 22m47.78290341s (build: 16m8.46095149s, test: 6m14.938931284s) the crash still happens on HEAD commit msg: Linux 4.14.271 crash: unregister_netdevice: waiting for DEV to become free can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout