bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 512651955aad51ef5f916aa2d84732e84d1c5e48
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a with gcc (GCC) 8.4.1 20210217
kernel signature: b78ce15e3fba647962c52ddeda98587c304543bec40a9d1ac38760edede6a52b
all runs: crashed: general protection fault in tcp_splice_read
testing current HEAD cfb41ef9deb1e6572ac218ddfcec9567e5d1c101
testing commit cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 with gcc (GCC) 8.4.1 20210217
kernel signature: 92172f57fcd5fe0570218b2566dc106d1ef78de1f0eaeeccd2f80d9ce82660c5
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 31m51.476286856s (build: 24m50.827820577s, test: 6m20.161980666s)
the crash still happens on HEAD
commit msg: Linux 4.14.237
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1