bisecting fixing commit since 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
building syzkaller on 512651955aad51ef5f916aa2d84732e84d1c5e48
testing commit 69b94dd6dcd14d9bfcba35a492f5e27c15cf4d0a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ed005c0552add2ddcb2e716bfce48a1c613ed8e69b58ca8ca3664681e6d8bfd0
all runs: crashed: general protection fault in tcp_splice_read
testing current HEAD 5f9f3b0057d5c5782985784ba0159b05b4083055
testing commit 5f9f3b0057d5c5782985784ba0159b05b4083055
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 167a2d4f66e8890e1bd8a4169bca7d9b0e0f4eb810adc7833247d73d7feeec18
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 25m47.299311614s (build: 18m23.99674169s, test: 6m39.350954971s)
the crash still happens on HEAD
commit msg: Linux 4.14.255
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1