bisecting fixing commit since 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
building syzkaller on f752fb536b579822da36383d50f78ff6f912a637
testing commit 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0fc3524d3629e9ddab9151df984d888df41318c101004466f7b87872936bc332
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
testing commit 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: bee2925926d123a95aa2efb7ea5ea314b5f88ff45ecaaa3c754d76ee6639d4ca
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m26.72470804s (build: 16m32.709795552s, test: 6m15.691598028s)
the crash still happens on HEAD
commit msg: Linux 4.14.281
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