bisecting fixing commit since 6a24ca2506d64598eac5d5219e99acca9bde4ca5 building syzkaller on 6436ce4bcd8e2c7dcca0b171ac91f51e96d973f8 testing commit 6a24ca2506d64598eac5d5219e99acca9bde4ca5 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 3babd5023a7cb5d0e05a50e16b1c67218aac420da28190d5fc44eaaeabcdcfc6 run #0: crashed: WARNING: ODEBUG bug in bt_host_release run #1: crashed: WARNING: ODEBUG bug in bt_host_release run #2: crashed: WARNING: ODEBUG bug in bt_host_release run #3: crashed: WARNING: ODEBUG bug in bt_host_release run #4: crashed: general protection fault in __queue_work run #5: crashed: WARNING: ODEBUG bug in bt_host_release run #6: crashed: WARNING: ODEBUG bug in bt_host_release run #7: crashed: WARNING: ODEBUG bug in bt_host_release run #8: crashed: general protection fault in __queue_work run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK reproducer seems to be flaky testing current HEAD 964f3712e6a7447d9d3203f2be3f6c50e78ea179 testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f6df6b797efce2c5f577d32f215d1d3f63abc2e2c99b8ffaa8b0d768f12d07fb all runs: crashed: unregister_netdevice: waiting for DEV to become free Reproducer flagged being flaky revisions tested: 2, total time: 29m44.833220561s (build: 16m30.848693565s, test: 12m43.754831789s) the crash still happens on HEAD commit msg: Linux 4.14.240 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout