bisecting fixing commit since 87335852c5d9ec629f80bb2257b9a9945962b719 building syzkaller on a0092f9dfdd33924abe5cf5565e4ec4748217c7b testing commit 87335852c5d9ec629f80bb2257b9a9945962b719 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 4f53dc4c3f57218e4777edb70256ff768001a0f79c5ea5f2c2582ab1f109c5bb run #0: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync run #1: crashed: BUG: unable to handle kernel paging request in pm_qos_update_target run #2: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync run #3: crashed: WARNING in pm_qos_remove_request run #4: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync run #5: crashed: WARNING in pm_qos_remove_request run #6: crashed: WARNING in pm_qos_remove_request run #7: crashed: WARNING in pm_qos_remove_request run #8: crashed: WARNING in pm_qos_remove_request run #9: crashed: WARNING in pm_qos_remove_request run #10: crashed: BUG: unable to handle kernel paging request in pm_qos_update_target run #11: crashed: WARNING in pm_qos_remove_request run #12: crashed: WARNING in pm_qos_remove_request run #13: crashed: WARNING in pm_qos_remove_request run #14: crashed: WARNING in pm_qos_remove_request run #15: crashed: WARNING in pm_qos_remove_request run #16: crashed: BUG: unable to handle kernel paging request in pm_qos_update_target run #17: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync run #18: crashed: WARNING in pm_qos_remove_request run #19: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync testing current HEAD 35c4ba160ab6133e548468bd0bd1109990dc7736 testing commit 35c4ba160ab6133e548468bd0bd1109990dc7736 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 3f47f9f484b27ece8d1c1fd01c1aaf83c8cab0213982e5eff08c6100176548e5 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 29m33.573430715s (build: 21m28.612238423s, test: 7m28.881625176s) the crash still happens on HEAD commit msg: Linux 4.14.245 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: hci3 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout