bisecting fixing commit since 87335852c5d9ec629f80bb2257b9a9945962b719
building syzkaller on a0092f9dfdd33924abe5cf5565e4ec4748217c7b
testing commit 87335852c5d9ec629f80bb2257b9a9945962b719 with gcc (GCC) 8.4.1 20210217
kernel signature: 5e383d791d551c84891a8ca3d8638da8ba5726f32fe726282cb0eb2e62b69e29
run #0: crashed: WARNING in pm_qos_remove_request
run #1: crashed: BUG: unable to handle kernel paging request in pm_qos_update_target
run #2: crashed: WARNING in pm_qos_remove_request
run #3: crashed: BUG: unable to handle kernel paging request in pm_qos_update_target
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: INFO: trying to register non-static key in cancel_delayed_work_sync
run #7: crashed: WARNING in pm_qos_remove_request
run #8: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync
run #9: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync
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: BUG: unable to handle kernel paging request in pm_qos_update_target
run #13: crashed: WARNING in pm_qos_remove_request
run #14: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync
run #15: crashed: WARNING in pm_qos_remove_request
run #16: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync
run #17: crashed: WARNING in pm_qos_remove_request
run #18: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync
run #19: crashed: INFO: trying to register non-static key in cancel_delayed_work_sync
testing current HEAD ad8397a84e1e425e3f8221638cee2bfa237d9b2c
testing commit ad8397a84e1e425e3f8221638cee2bfa237d9b2c with gcc (GCC) 8.4.1 20210217
kernel signature: 2329123d08fefe695592c9d93f7ab8ff62f294cf61653e8a1d2c03f8c77eb531
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m27.157980692s (build: 17m10.401219493s, test: 7m45.443790717s)
the crash still happens on HEAD
commit msg: Linux 4.14.234
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout