bisecting fixing commit since 27ce4f2a6817e38ca74c643d47a96359f6cc0c1c building syzkaller on 77a55c8ea6070a9a88715db4c17e9612a7f99b21 testing commit 27ce4f2a6817e38ca74c643d47a96359f6cc0c1c with gcc (GCC) 8.4.1 20210217 kernel signature: cb24bd2b7aeb0b75ad25f28c65d5c40e4b8ea22ec58799861b9e264a0e44756a all runs: crashed: BUG: corrupted list in kobject_add_internal testing current HEAD 96afcb20f36f07683aaa342e592ea8ec76fd1fa6 testing commit 96afcb20f36f07683aaa342e592ea8ec76fd1fa6 with gcc (GCC) 8.4.1 20210217 kernel signature: 05aa0f1232041feb451de0f54caffbe1ad98e2d5cabb725179c6b0a2f6a75384 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 22m48.039738311s (build: 16m2.170162839s, test: 6m22.222021359s) the crash still happens on HEAD commit msg: Linux 4.14.233 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout