bisecting fixing commit since 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
building syzkaller on c885789257c76ea4479ea36282f5e0a2c7861e26
testing commit 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: fa492ebfd68c6287df80089951dd47598d3aba70d6630a3a338313f203c31845
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD ed2e96e119365437d6aa26a8a13eb39f77a43542
testing commit ed2e96e119365437d6aa26a8a13eb39f77a43542
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0425c811ec7789fd62edd8229c49306ae0ae6c6e9d8a4ab38b712bf3b9b23522
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 21m9.634130604s (build: 13m51.888695751s, test: 6m55.666821511s)
the crash still happens on HEAD
commit msg: Linux 4.14.286
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