bisecting fixing commit since 2d2791fce891fc20709232d49a6bae075b9a77f8
building syzkaller on a57db36fe48aa500618c2eac3b38c27afe6d290f
testing commit 2d2791fce891fc20709232d49a6bae075b9a77f8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3289bf7820e26a85ff1d932e42da0daae2cf476f04adbc55f470c8d2b6b03097
all runs: crashed: KASAN: use-after-free Read in disk_unblock_events
testing current HEAD 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
testing commit 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d53c4671405bcdd064f0c28c71d9711fd9c1be2f6cdc90302274ba87ce114177
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m2.595817287s (build: 16m46.238084798s, test: 6m49.270125219s)
the crash still happens on HEAD
commit msg: Linux 4.14.259
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f 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: hci5 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout