bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8
building syzkaller on 8bc4594f832068a30c0eff44d468311780057d1f
testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: bd37e6dfca5a009fb53b8a47683f0e0ad16c82d515e44be6ad922892d9efff89
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 corrupted
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 kill_block_super
run #16: crashed: WARNING in kill_block_super
run #17: crashed: WARNING in deactivate_locked_super
run #18: crashed: WARNING in kill_block_super
run #19: crashed: WARNING in kill_block_super
testing current HEAD 66722c42ec916e92cadda46316f8f6e3fdcaedc6
testing commit 66722c42ec916e92cadda46316f8f6e3fdcaedc6
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3000aff49f4b85653975622a42312c666921c322155db754979ca0a7e230e93a
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 35m54.430670494s (build: 20m19.436082141s, test: 14m59.259362693s)
the crash still happens on HEAD
commit msg: Linux 4.14.256
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci1 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout