bisecting fixing commit since 1752938529c614a8ed4432ecce6ebc95d3b87207
building syzkaller on c104d4a3bfc1f83e7ed33b4dca70e099402ce39f
testing commit 1752938529c614a8ed4432ecce6ebc95d3b87207
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d7bd2af181f07e979c46a88d4a82903af0ce2a41be370fe86e2c57a719ff6e8b
all runs: crashed: INFO: task hung in sync_inodes_sb
testing current HEAD 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
testing commit 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 743e8db3c935d8628af4da69cd44575367fda9ff7c6c2ce4878d9fada90179b2
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m57.900836941s (build: 17m9.170224729s, test: 10m15.342667013s)
the crash still happens on HEAD
commit msg: Linux 4.14.284
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout