bisecting fixing commit since d7e78d08fa77acdea351c8f628f49ca9a0e1029a building syzkaller on abf9ba4fc75d9b29af15625d44dcfc1360fad3b7 testing commit d7e78d08fa77acdea351c8f628f49ca9a0e1029a compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 3ed7f63c2f3cac57bd413e33afbb9b8df7ec3d873be3fe96a11524c6fd021285 all runs: crashed: possible deadlock in rtnl_lock testing current HEAD 46914f96189be290174e378c6bf9ccadfdb9ca1e testing commit 46914f96189be290174e378c6bf9ccadfdb9ca1e compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 09cd4b0a23488c55c2de4b18d51d857eba352b58dc5b147a1bf6b659cc32e8e0 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 27m54.167219018s (build: 20m52.084700346s, test: 6m35.82133702s) the crash still happens on HEAD commit msg: Linux 4.14.243 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: hci5 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout