bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207
building syzkaller on b3c3bb8e115e28ac78d37da1ee8931351d6cb113
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 706804d989ae946d374fa8422ca430c438f20df6082284050eebaf700576fd9c
run #0: crashed: possible deadlock in mnt_want_write
run #1: crashed: possible deadlock in iterate_dir
run #2: crashed: possible deadlock in iterate_dir
run #3: crashed: possible deadlock in iterate_dir
run #4: crashed: possible deadlock in mnt_want_write
run #5: crashed: possible deadlock in iterate_dir
run #6: crashed: possible deadlock in iterate_dir
run #7: crashed: possible deadlock in iterate_dir
run #8: crashed: possible deadlock in iterate_dir
run #9: crashed: possible deadlock in iterate_dir
run #10: crashed: possible deadlock in mnt_want_write
run #11: crashed: possible deadlock in iterate_dir
run #12: crashed: possible deadlock in iterate_dir
run #13: crashed: possible deadlock in mnt_want_write
run #14: crashed: possible deadlock in mnt_want_write
run #15: crashed: possible deadlock in mnt_want_write
run #16: crashed: possible deadlock in mnt_want_write
run #17: crashed: possible deadlock in iterate_dir
run #18: crashed: possible deadlock in iterate_dir
run #19: crashed: possible deadlock in iterate_dir
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 812749db2f33dd9258df344298e88008ce83e774b094795fdcf9ba3f49ae9206
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 28m46.426890327s (build: 21m37.143829118s, test: 6m36.252835652s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x041b tx timeout
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: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 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: hci2 command 0x0419 tx timeout