bisecting fixing commit since 004bfaafc45ccc95366b37c9b9e7844cd5156368
building syzkaller on 89bc860804252dbacb8c2bea60b9204859f4afd7
testing commit 004bfaafc45ccc95366b37c9b9e7844cd5156368
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 04d0535004baf38216ab0d5bac948885003c7da5757c49150bede0ed7a4cc52b
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: 243bbc63f4131a8a667eba6ed19f3c1719b78c073197fe243dc5ccee9f21e672
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m5.609302195s (build: 15m5.289004653s, test: 6m37.095507367s)
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