bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 512651955aad51ef5f916aa2d84732e84d1c5e48
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b3e26231059effbf692f1d5ce21c003124b6a8979f4e6a334037331fe5f27b35
all runs: crashed: general protection fault in tcp_splice_read
testing current HEAD 964f3712e6a7447d9d3203f2be3f6c50e78ea179
testing commit 964f3712e6a7447d9d3203f2be3f6c50e78ea179
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: d4e5154bbf59a544380dca77e2a9b66611006e514f5c336a2efad5f3d610e6f7
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m41.18035759s (build: 15m43.274580531s, test: 6m32.587274759s)
the crash still happens on HEAD
commit msg: Linux 4.14.240
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1