bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 512651955aad51ef5f916aa2d84732e84d1c5e48
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: b6eeb8dd0a2aaf09424f744ee076524815f6eb78c08625d36de16905a95e52bc
all runs: crashed: general protection fault in tcp_splice_read
testing current HEAD 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
testing commit 84bae26850e3b384a45f0f9a5f8b3b5983afacd8
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6c14e616846aa413c989d693ea8319652083c0ef0f8221e531230705e6bb18f3
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 32m43.173683214s (build: 25m29.792628127s, test: 6m28.322327547s)
the crash still happens on HEAD
commit msg: Linux 4.14.284
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1