bisecting fixing commit since 397a88b2cc869c823bf40bc403d36a62afec1edd building syzkaller on 06ed56cd22e24a55c40d152880b66b108834c8f2 testing commit 397a88b2cc869c823bf40bc403d36a62afec1edd with gcc (GCC) 8.4.1 20210217 kernel signature: 5b1a52a1f82ce82a937df26db41adbf84aee39c3ff5d5459c4072c3ced4aa02f run #0: crashed: SYZFAIL: clone failed run #1: crashed: SYZFAIL: clone failed run #2: crashed: SYZFAIL: clone failed run #3: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #4: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #5: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #6: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #7: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #8: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #9: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #10: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #11: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #12: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #13: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #14: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #15: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #16: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #17: OK run #18: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. run #19: crashed: WARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1. testing current HEAD ad8397a84e1e425e3f8221638cee2bfa237d9b2c testing commit ad8397a84e1e425e3f8221638cee2bfa237d9b2c with gcc (GCC) 8.4.1 20210217 kernel signature: 4b9f2a8297eb6ed797907a5d267d5906f921aa8ca36aa6ed54a4951cf0de5c4a all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 34m20.518210244s (build: 19m13.36227313s, test: 14m43.142594197s) the crash still happens on HEAD commit msg: Linux 4.14.234 crash: unregister_netdevice: waiting for DEV to become free can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout