bisecting fixing commit since 6b6446efedb27c2766745a04f9b5d4449f51391d
building syzkaller on cba33199be220cbf61f7c0c8223d88a25a913d6f
testing commit 6b6446efedb27c2766745a04f9b5d4449f51391d
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: e78ee8556ed02d2dd1809a5aad7953ef1200ac8470a9f68fc878a8d3247d161b
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 blkdev_put
run #7: crashed: possible deadlock in blkdev_put
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: INFO: task hung in blkdev_put
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 blkdev_put
run #18: crashed: INFO: task hung in blkdev_put
run #19: crashed: INFO: task hung in blkdev_put
testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26
testing commit 424a46ea058e160ae6fdd0693092ba79da533f26
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2a0db04b8802ca03b1928cd96f453bf8f264deb8edb3a6d25262c4776cc559f2
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 34m56.722638557s (build: 24m16.695566681s, test: 9m58.097959549s)
the crash still happens on HEAD
commit msg: Linux 4.14.288
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 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: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 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: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout