bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 512651955aad51ef5f916aa2d84732e84d1c5e48
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 30a5e41346f1047fe15337a29c181ab51ee160d21776ca6d4504b8e6a60cbe6d
all runs: crashed: general protection fault in tcp_splice_read
testing current HEAD 424a46ea058e160ae6fdd0693092ba79da533f26
testing commit 424a46ea058e160ae6fdd0693092ba79da533f26
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 92a09e2bb5d62c53414954857cc59cfe7a0f8083f32a0c9abd701f16f3a9dbad
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m6.353381088s (build: 15m27.115887088s, test: 6m14.252278931s)
the crash still happens on HEAD
commit msg: Linux 4.14.288
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1