bisecting fixing commit since 7f2c5eb458b8855655a19c44cd0043f7f83c595f
building syzkaller on 80a0690249dc4dbbbed95ba197192b99c73694c5
testing commit 7f2c5eb458b8855655a19c44cd0043f7f83c595f
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b8c80027fe39240b05d1bb0d21e930a6ba9785e8903bae5b53bab60852f8e1c3
run #0: crashed: WARNING in cgroup_apply_control_disable
run #1: crashed: WARNING in cgroup_apply_control_disable
run #2: crashed: WARNING in cgroup_apply_control_disable
run #3: crashed: WARNING in cgroup_apply_control_disable
run #4: crashed: WARNING in cgroup_apply_control_disable
run #5: crashed: WARNING in cgroup_apply_control_disable
run #6: crashed: WARNING in cgroup_apply_control_disable
run #7: crashed: WARNING in cgroup_apply_control_disable
run #8: crashed: WARNING in cgroup_apply_control_disable
run #9: crashed: WARNING in cgroup_apply_control_disable
run #10: crashed: WARNING in cgroup_apply_control_disable
run #11: crashed: WARNING in cgroup_apply_control_disable
run #12: crashed: WARNING in cgroup_apply_control_disable
run #13: crashed: WARNING in cgroup_apply_control_disable
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD 964f3712e6a7447d9d3203f2be3f6c50e78ea179
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6e339d5833cf173d59ae57c55ccf58568a490e1b7fa60b51afcb7946f4c7a828
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 28m44.952329472s (build: 16m11.613404054s, test: 12m4.313799496s)
the crash still happens on HEAD
commit msg: Linux 4.14.240
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1