bisecting fixing commit since 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79
building syzkaller on e5b64d68915ed04952cef2f5dcb3f3ccbb7cfa57
testing commit 3242aa3a635c0958671ee1e4b0958dcc7c4e5c79 with gcc (GCC) 8.4.1 20210217
kernel signature: 9798a9822f1088414b87696b56d622eec81af7f30155528772769ec53d99f41f
run #0: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #1: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #2: crashed: SYZFAIL: netlink_send_ext: short netlink write
run #3: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #4: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #5: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #6: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #7: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #8: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #9: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #10: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #11: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #12: crashed: SYZFAIL: netlink_send_ext: short netlink write
run #13: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #14: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #15: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #16: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #17: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #18: crashed: SYZFAIL: netlink_send_ext: netlink read failed
run #19: crashed: SYZFAIL: netlink_send_ext: netlink read failed
testing current HEAD 313e82bbefb3d1d926858b58092f5d50f41d924d
testing commit 313e82bbefb3d1d926858b58092f5d50f41d924d with gcc (GCC) 8.4.1 20210217
kernel signature: ba369811cee84a31ef09d675675a6984eb1b5df7f7ac18d3fbcb1e1ee7038d17
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m22.647917216s (build: 15m3.557842902s, test: 6m23.336484567s)
the crash still happens on HEAD
commit msg: Linux 4.14.238
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci4 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: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 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: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout