bisecting fixing commit since 1d177c0872ab99ac8d1fe09376a56c2911a837c0
building syzkaller on 26967e354e030f6a022b7a60a7c9899ec25923aa
testing commit 1d177c0872ab99ac8d1fe09376a56c2911a837c0
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 59bd3e6da8d558842e3c4f02c30a37c9355c477aeda41feb80c629bd6f7a5c79
all runs: crashed: WARNING in __btrfs_close_devices
testing current HEAD 162b95d01320370b80cb2d5724cea4ae538ac740
testing commit 162b95d01320370b80cb2d5724cea4ae538ac740
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 964e47ca6084185c1e55aa4fe175d4662599bd8dfc0ebbf7eb7d54d154131f36
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m29.521031769s (build: 15m29.526100249s, test: 6m30.383763379s)
the crash still happens on HEAD
commit msg: Linux 4.14.244
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout