bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207
building syzkaller on 77e2b66864e69c17416614228723a1ebd3581ddc
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f74bedc321ee7fdb6ded9b9061728da204e1632818fe2472fb2bcaa884e37799
all runs: crashed: possible deadlock in lock_trace
testing current HEAD 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
testing commit 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c705a0a05b5995b8337ae302a22e6b65ab1444bb35bd3f535f1b24aa710ea076
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 23m31.250711755s (build: 15m45.713581834s, test: 7m16.778900587s)
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