bisecting fixing commit since 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae building syzkaller on 04201c0669446145fd9c347c5538da0ca13ff29b testing commit 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 2077c2c30b7d58aac3508e1ffa77ead1bb8a89b54aae25abce2221b7d400e3ca all runs: crashed: inconsistent lock state in free_huge_page testing current HEAD 94cb1fed447ac8d328a8b50f9583df4ce70793e2 testing commit 94cb1fed447ac8d328a8b50f9583df4ce70793e2 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 5ff53195ad623046d2928a2e8583bba6c8f6b17e8cdb9a4cf9ef5f96de52582a all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 22m36.089413811s (build: 15m46.393118283s, test: 6m26.247524453s) the crash still happens on HEAD commit msg: Linux 4.14.242 crash: unregister_netdevice: waiting for DEV to become free Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout