ci2 starts bisection 2023-01-19 21:26:39.195489278 +0000 UTC m=+7916.554542269
bisecting fixing commit since 5b7a52cd2eef952cee8a72512ef370bcdef46636
building syzkaller on a7aac492ebbc53e5c7bc4b5bbaf55f428c54093f
ensuring issue is reproducible on original commit 5b7a52cd2eef952cee8a72512ef370bcdef46636

testing commit 5b7a52cd2eef952cee8a72512ef370bcdef46636 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6de0e8bcd498324151fed720ce90723a2e013d56f127e1ee79a3ac1c94b29f0e
run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #2: crashed: BUG: unable to handle kernel
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #4: crashed: BUG: unable to handle kernel
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #8: crashed: BUG: unable to handle kernel
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #10: crashed: BUG: unable to handle kernel
run #11: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #12: crashed: BUG: unable to handle kernel
run #13: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #14: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #15: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #16: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #17: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #18: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #19: crashed: INFO: task hung in hub_port_init
testing current HEAD 97205fccccdc5c145b77c434135ee8429b03ed98
testing commit 97205fccccdc5c145b77c434135ee8429b03ed98 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 09265626854fdf5ca199b059494f6d33ab0ade4a36c9815f8d6be31e387d66d9
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m22.612346216s (build: 14m12.56586172s, test: 10m10.21124875s)
the crash still happens on HEAD
commit msg: Linux 4.14.303
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci0 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: hci0 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout