bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207 building syzkaller on 09efdd63fa8ebdadeccc841b699026e73081f7e0 testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 22a7e05fe3ce299a105cb3813eaa36a3449e6f354f19f3f87596b85e22d6958b run #0: crashed: WARNING: ODEBUG bug in netdev_freemem run #1: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #2: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #3: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #4: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #5: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #6: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #7: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #8: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #9: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #10: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #11: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #12: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #13: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #14: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #15: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #16: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #17: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #18: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed run #19: crashed: SYZFAIL: syz_usbip_server_init: socketpair failed testing current HEAD bfdef05c8da46b022172695aa493cff7ac667a4b testing commit bfdef05c8da46b022172695aa493cff7ac667a4b compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 7783dfc4912e1dddd596fdbd703d3eb86587f54e94b0b31df6f1e810dd3376cf all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 23m38.943160745s (build: 14m39.950970417s, test: 8m34.890657263s) the crash still happens on HEAD commit msg: Linux 4.14.261 crash: unregister_netdevice: waiting for DEV to become free unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout