bisecting fixing commit since 84f5ad468100f86d70096799e4ee716a17c2962f
building syzkaller on ddc3e85997efdad885e208db6a98bca86e5dd52f
testing commit 84f5ad468100f86d70096799e4ee716a17c2962f with gcc (GCC) 8.4.1 20210217
kernel signature: 75d0d71504fb65f66658f511408669116d4103c6aacec55b61de38a166e5420b
all runs: crashed: general protection fault in hsr_check_carrier_and_operstate
testing current HEAD ad8397a84e1e425e3f8221638cee2bfa237d9b2c
testing commit ad8397a84e1e425e3f8221638cee2bfa237d9b2c with gcc (GCC) 8.4.1 20210217
kernel signature: a6bc6844bf992427945a76a6aeac6baefc5a889ba83a090123ea6a9b521140e4
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 32m32.310677324s (build: 24m18.491727516s, test: 6m55.07501373s)
the crash still happens on HEAD
commit msg: Linux 4.14.234
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1