bisecting fixing commit since f79dc86058bc0c8317eea2a0f968382c6ffb0cfb
building syzkaller on 65a7a8540d29e72622fca06522587f7e66539fd3
testing commit f79dc86058bc0c8317eea2a0f968382c6ffb0cfb
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 34fc8e80bb4b58752cfdbcbd63caaf8d68852556d1a4589d6f056dd028c0b462
run #0: crashed: INFO: task hung in __get_super
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 lo_ioctl
run #8: crashed: INFO: task hung in __blkdev_get
run #9: crashed: INFO: task hung in lo_ioctl
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 lo_ioctl
run #13: crashed: INFO: task hung in lo_ioctl
run #14: crashed: INFO: task hung in __blkdev_get
run #15: crashed: INFO: task hung in __get_super
run #16: crashed: INFO: task hung in __get_super
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 964f3712e6a7447d9d3203f2be3f6c50e78ea179
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: dd0aa4f0d929d81c78b266cad2cd75c8abe3009dd753a96d5c46c2fbfc8cc204
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m18.433646583s (build: 18m35.19991447s, test: 10m18.944535599s)
the crash still happens on HEAD
commit msg: Linux 4.14.240
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout