bisecting fixing commit since 1752938529c614a8ed4432ecce6ebc95d3b87207
building syzkaller on c104d4a3bfc1f83e7ed33b4dca70e099402ce39f
testing commit 1752938529c614a8ed4432ecce6ebc95d3b87207
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 03df63b4014f733a7be744c23d6b9a1778c9c1d965eedb7211ad1b7d90e3c14f
all runs: crashed: INFO: task hung in sync_inodes_sb
testing current HEAD f96eb53cbd76415edfba99c2cfa88567a885a428
testing commit f96eb53cbd76415edfba99c2cfa88567a885a428
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d490a85cee142a4b58e62f0a16cad165ed7037f8b6dd0cfd14262ba3c4fd2445
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m1.504076896s (build: 15m34.390307386s, test: 9m58.295616231s)
the crash still happens on HEAD
commit msg: Linux 4.14.246
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b 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: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout