bisecting fixing commit since f79dc86058bc0c8317eea2a0f968382c6ffb0cfb
building syzkaller on 65a7a8540d29e72622fca06522587f7e66539fd3
testing commit f79dc86058bc0c8317eea2a0f968382c6ffb0cfb
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 49171a5f1820b18e590c597804f7a918bb063870a04436493aa02e3ae95f1e8d
run #0: crashed: INFO: task hung in __blkdev_get
run #1: crashed: INFO: task hung in __blkdev_get
run #2: crashed: INFO: task hung in __get_super
run #3: crashed: INFO: task hung in __get_super
run #4: crashed: INFO: task hung in __get_super
run #5: crashed: INFO: task hung in __get_super
run #6: crashed: INFO: task hung in __get_super
run #7: crashed: INFO: task hung in __blkdev_get
run #8: crashed: INFO: task hung in __blkdev_get
run #9: crashed: INFO: task hung in __blkdev_get
run #10: crashed: INFO: task hung in __get_super
run #11: crashed: INFO: task hung in __get_super
run #12: crashed: INFO: task hung in __get_super
run #13: crashed: INFO: task hung in lo_ioctl
run #14: crashed: INFO: task hung in lo_ioctl
run #15: crashed: INFO: task hung in lo_ioctl
run #16: crashed: INFO: task hung in lo_ioctl
run #17: crashed: INFO: task hung in lo_ioctl
run #18: crashed: INFO: task hung in lo_ioctl
run #19: crashed: INFO: task hung in lo_ioctl
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: e24914a1f558a0ed6f7730fb911bab5b65989ec9852b641b19151790869e2b0b
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m15.198794328s (build: 16m27.964669843s, test: 10m20.55167812s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout