bisecting fixing commit since 9a95f25269bd9257ab9fba7bb14355d50b5f39ec
building syzkaller on c8e81ce4c7e3b59e7c83c6fab56c217916f3b3b6
testing commit 9a95f25269bd9257ab9fba7bb14355d50b5f39ec with gcc (GCC) 8.4.1 20210217
kernel signature: 5bb52f54c80d6de2fca46fa77b840df7ada785145385d4bb9e7174c61a66c3b4
all runs: crashed: possible deadlock in bond_get_stats
testing current HEAD 4e68c9b0763ff55eaa69d6e519f07515f1c9037b
testing commit 4e68c9b0763ff55eaa69d6e519f07515f1c9037b with gcc (GCC) 8.4.1 20210217
kernel signature: d2e4b13c2bc5131d1fd1cc78e34f4f95c331a9c6cd27d9b03ef2b21f10cd1e1c
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m31.009434359s (build: 20m4.860361654s, test: 6m26.039819293s)
the crash still happens on HEAD
commit msg: Linux 4.14.239
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1