bisecting fixing commit since 050272a0423e68207fd2367831ae610680129062
building syzkaller on e3ecea2e7fc6b80cc715c596105f4cf890e7e2e6
testing commit 050272a0423e68207fd2367831ae610680129062
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: a870c651fb43b512bcd60183e76d2767d5db7927b56818af90c40c461f2d2151
all runs: crashed: possible deadlock in rtnl_lock
testing current HEAD f11944f1aa1cda3fd8b4edc71e3cf9dceb40234f
testing commit f11944f1aa1cda3fd8b4edc71e3cf9dceb40234f
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 38f30db09f03cd84a8f2deb0d2c10b9544eb8cbc9e5c06c9370f9d8f7e0da594
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m38.055013385s (build: 22m8.377331037s, test: 6m37.053473239s)
the crash still happens on HEAD
commit msg: Linux 4.14.248
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1