ci2 starts bisection 2022-10-26 18:35:56.087789187 +0000 UTC m=+3194.724963392
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: 54cae4bd695a7d4b997f7e2829587d6c73866481ba5d755048f4fb1f5883bccf
run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #1: crashed: BUG: unable to handle kernel
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #3: crashed: BUG: unable to handle kernel
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #6: crashed: BUG: unable to handle kernel
run #7: crashed: BUG: unable to handle kernel
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #10: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #11: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #12: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #13: crashed: BUG: unable to handle kernel
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
run #17: crashed: BUG: unable to handle kernel NULL pointer dereference in vhci_shutdown_connection
run #18: crashed: INFO: task hung in hub_port_init
run #19: crashed: INFO: task hung in hub_port_init
testing current HEAD 41f36d7859a79e11a13ef63ced8ae8cc31537ba2
testing commit 41f36d7859a79e11a13ef63ced8ae8cc31537ba2 gcc
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: effd58fb74e96889630d28cd01492e91d57c6eebfcaee44a97767113087573d7
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 38m3.520476349s (build: 24m44.180608576s, test: 11m51.837139011s)
the crash still happens on HEAD
commit msg: Linux 4.14.296
crash: unregister_netdevice: waiting for DEV to become free
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
syz-executor.0 (7284) used greatest stack depth: 24184 bytes left
can: request_module (can-proto-0) failed.
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: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout