bisecting fixing commit since 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
building syzkaller on d018dd31bfa66650daec4d49dc7b264a827e7834
testing commit 9dfbac0e6b8600043de8dc85ed072f5f1342dc15
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b0d6e7caf925091f91a434e45a516376b232c7ad87ec9ca6f7f8e6abe6afe6a1
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD 569d1abf9402e943bf00821a6e0b8e13bffde699
testing commit 569d1abf9402e943bf00821a6e0b8e13bffde699
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 848235e76faa5c1ff95ff43c8213093fb46bae0c568f89fb3bd9b4edc5f545ae
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m14.24568354s (build: 15m18.490134619s, test: 6m21.62733091s)
the crash still happens on HEAD
commit msg: Linux 4.14.278
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