bisecting fixing commit since b98aebd298246df37b472c52a2ee1023256d02e3
building syzkaller on 5ea87a6638e52a94361b26b8576a1605585815fb
testing commit b98aebd298246df37b472c52a2ee1023256d02e3
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 3009961b52a52f33440287f12b2a805307e67a193399533bdd3c8951c2791dbf
all runs: crashed: general protection fault in kernfs_kill_sb
testing current HEAD 46914f96189be290174e378c6bf9ccadfdb9ca1e
testing commit 46914f96189be290174e378c6bf9ccadfdb9ca1e
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: c5c87aec688bc0027dbfbde96f1e4c7724b71ac69469b0bbe61611830b29d6ae
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m25.150582009s (build: 19m22.091729295s, test: 6m15.486144377s)
the crash still happens on HEAD
commit msg: Linux 4.14.243
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1