bisecting fixing commit since b86ee2b7ae42b6b37a918b66236608e2cc325f59
building syzkaller on a7dab6385c1d95547a88e22577fb56fbcd5c37eb
testing commit b86ee2b7ae42b6b37a918b66236608e2cc325f59
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 77f01b997a735fd440a5eae4fd8eb514de4bb62975a6911b2b72ff0f9b88c3a8
all runs: crashed: unregister_netdevice: waiting for DEV to become free
testing current HEAD e853993d29aa42ac4b3c2912db975a0a66d7a5b0
testing commit e853993d29aa42ac4b3c2912db975a0a66d7a5b0
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 85c3ee0b88e6690351a13775c2a6ede3f4993c54374b61614ee262070f26cfaf
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m55.132015119s (build: 23m13.207690901s, test: 6m50.277447778s)
the crash still happens on HEAD
commit msg: Linux 4.14.269
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1