bisecting fixing commit since 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79 building syzkaller on 4c37c133e4bf703d023995535f1e264d8658e08e testing commit 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79 with gcc (GCC) 8.4.1 20210217 kernel signature: 23982cd806f7895622464d86f259bb2263f8f27e94b249cdfc92dbc6394de60c run #0: crashed: WARNING in tracepoint_probe_register_prio run #1: crashed: WARNING in tracepoint_probe_register_prio run #2: crashed: WARNING in tracepoint_probe_register_prio run #3: crashed: WARNING in tracepoint_probe_register_prio run #4: crashed: WARNING in tracepoint_probe_register_prio run #5: crashed: WARNING in tracepoint_probe_register_prio run #6: crashed: WARNING in tracepoint_probe_register_prio run #7: crashed: WARNING in tracepoint_probe_register_prio run #8: crashed: WARNING in tracepoint_probe_register_prio run #9: crashed: WARNING in tracepoint_probe_register_prio run #10: crashed: WARNING in tracepoint_probe_register_prio run #11: crashed: WARNING in tracepoint_probe_register_prio run #12: crashed: WARNING in tracepoint_probe_register_prio run #13: crashed: WARNING in tracepoint_probe_register_prio run #14: crashed: WARNING in tracepoint_probe_register_prio run #15: crashed: WARNING in tracepoint_probe_register_prio run #16: crashed: WARNING in tracepoint_probe_register_prio run #17: crashed: WARNING in tracepoint_probe_register_prio run #18: crashed: WARNING in tracepoint_probe_register_prio run #19: OK testing current HEAD cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 testing commit cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 with gcc (GCC) 8.4.1 20210217 kernel signature: 1f167776c78fed46330236105f46bcb5cf42f116747c7db7347505d6be3c22e3 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 29m50.355730024s (build: 14m49.588739329s, test: 14m39.950882597s) the crash still happens on HEAD commit msg: Linux 4.14.237 crash: unregister_netdevice: waiting for DEV to become free can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. Bluetooth: hci0 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout