bisecting fixing commit since 15a1c6b6f5162f7b70cf9a77cd8ed9771c1f0b53
building syzkaller on 131df97d431404458e805009bda794abfb00f45f
testing commit 15a1c6b6f5162f7b70cf9a77cd8ed9771c1f0b53
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: fc1ef0a7cb88d5ceaee5af53c19e4e42fcd098e4baaf74f9c90f938809d33ac5
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD dffb5c6ff09c51ed585e3e7665143df103867fc8
testing commit dffb5c6ff09c51ed585e3e7665143df103867fc8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7dddbd587ac777c64cbfa237923651898bfd75223105fbc8295a4f1d4f8fe81f
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m39.595437847s (build: 16m38.592498627s, test: 6m36.057864408s)
the crash still happens on HEAD
commit msg: Linux 4.14.280
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout