bisecting fixing commit since 6b6446efedb27c2766745a04f9b5d4449f51391d
building syzkaller on cba33199be220cbf61f7c0c8223d88a25a913d6f
testing commit 6b6446efedb27c2766745a04f9b5d4449f51391d
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: da0782a07f478109717da77ae99ff155170e37e1c2f9783f63b0baaffba2f539
run #0: crashed: possible deadlock in __get_super
run #1: crashed: possible deadlock in __get_super
run #2: crashed: possible deadlock in __get_super
run #3: crashed: possible deadlock in __get_super
run #4: crashed: possible deadlock in __get_super
run #5: crashed: possible deadlock in __get_super
run #6: crashed: possible deadlock in __get_super
run #7: crashed: possible deadlock in __get_super
run #8: crashed: possible deadlock in __get_super
run #9: crashed: possible deadlock in __get_super
run #10: crashed: possible deadlock in __get_super
run #11: crashed: possible deadlock in __get_super
run #12: crashed: possible deadlock in __get_super
run #13: crashed: possible deadlock in __get_super
run #14: crashed: INFO: task hung in __get_super
run #15: crashed: INFO: task hung in blkdev_put
run #16: crashed: INFO: task hung in blkdev_put
run #17: crashed: INFO: task hung in __get_super
run #18: crashed: INFO: task hung in blkdev_put
run #19: crashed: INFO: task hung in blkdev_put
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 414955e33f8de94b28f7685b20c0aeff63a7d33a5754f1d9ea99e19a8c9490d9
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m50.43976969s (build: 20m11.743550574s, test: 10m15.45570472s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout