bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 8bc4594f832068a30c0eff44d468311780057d1f
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 53b4347017aa20c5c903452442b09f4ddf352f609f51e40433fde962c704636c
run #0: crashed: WARNING in kill_block_super
run #1: crashed: WARNING in kill_block_super
run #2: crashed: WARNING in kill_block_super
run #3: crashed: WARNING in kill_block_super
run #4: crashed: WARNING in kill_block_super
run #5: crashed: WARNING in kill_block_super
run #6: crashed: WARNING in kill_block_super
run #7: crashed: WARNING in kill_block_super
run #8: crashed: WARNING in corrupted
run #9: crashed: WARNING in kill_block_super
run #10: crashed: WARNING in kill_block_super
run #11: crashed: WARNING in kill_block_super
run #12: crashed: WARNING in kill_block_super
run #13: crashed: WARNING in kill_block_super
run #14: crashed: WARNING in kill_block_super
run #15: crashed: WARNING in corrupted
run #16: crashed: WARNING in corrupted
run #17: crashed: WARNING in kill_block_super
run #18: OK
run #19: OK
testing current HEAD 756db2ba8bde4ead58ceb54e9cbc71f526f9a98f
testing commit 756db2ba8bde4ead58ceb54e9cbc71f526f9a98f
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2a694d4311685326de02dbbc025f9dd1c058e4c96624741643eb6563ba3eae2c
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m32.392426026s (build: 15m9.161040594s, test: 14m43.227604956s)
the crash still happens on HEAD
commit msg: Linux 4.14.249
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout