bisecting fixing commit since 29c52025152bab4c557d8174da58f1a4c8e70438 building syzkaller on fcc6d71be2c3ce7d9305c04fc2e87af554571bac testing commit 29c52025152bab4c557d8174da58f1a4c8e70438 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: c68f40d9ee068b5190b7f38746d202d83878d30e2dd5eab74af5f22ad895c960 all runs: crashed: SYZFAIL: clone failed testing current HEAD b86ee2b7ae42b6b37a918b66236608e2cc325f59 testing commit b86ee2b7ae42b6b37a918b66236608e2cc325f59 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: c1e7d5841e07ee41d2c2d9a3b1f66ce6f4016ed39151c055fc023e9cbc76cbc6 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 32m50.074863597s (build: 24m41.79220856s, test: 7m36.697380056s) the crash still happens on HEAD commit msg: Linux 4.14.264 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: hci4 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b 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: hci4 command 0x041b tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout