bisecting fixing commit since 7f2c5eb458b8855655a19c44cd0043f7f83c595f
building syzkaller on 80a0690249dc4dbbbed95ba197192b99c73694c5
testing commit 7f2c5eb458b8855655a19c44cd0043f7f83c595f
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 75f880f151ddc86864ec84c03d42b37f7ff11468b23e77b6cccc197ced7dd71a
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: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD fa33f9094f36943ea32f7fbe323293b62e96151d
testing commit fa33f9094f36943ea32f7fbe323293b62e96151d
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2ec8e439c2906cfd4b1e1b8b5e8ab463772aa2c25752ec5cf2ae83e63d07140e
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 31m0.998560905s (build: 18m24.807623295s, test: 12m0.956374338s)
the crash still happens on HEAD
commit msg: Linux 4.14.268
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1