Crash on darwin #1
Description
Basically the network wasn't responding and detection failed, but also crashed in so doing.
Stack trace follows, but doesn't mention networktest code. The crash happened in the runtime.
failed MSpanList_Insert 0x2ff000 0xd3a61c1e713 0x0 0x0
fatal error: MSpanList_Insert
runtime stack:
runtime.throw(0x1e1030, 0x10)
/usr/lib/go/src/runtime/panic.go:530 +0x90 fp=0x7fff5fbff600 sp=0x7fff5fbff5e8
runtime.(*mSpanList).insert(0x2ade08, 0x2ff000)
/usr/lib/go/src/runtime/mheap.go:933 +0x293 fp=0x7fff5fbff630 sp=0x7fff5fbff600
runtime.(*mheap).freeSpanLocked(0x2ad600, 0x2ff000, 0x100, 0x0)
/usr/lib/go/src/runtime/mheap.go:809 +0x4be fp=0x7fff5fbff698 sp=0x7fff5fbff630
runtime.(*mheap).grow(0x2ad600, 0x8, 0x0)
/usr/lib/go/src/runtime/mheap.go:675 +0x2a0 fp=0x7fff5fbff6f0 sp=0x7fff5fbff698
runtime.(*mheap).allocSpanLocked(0x2ad600, 0x1, 0x0)
/usr/lib/go/src/runtime/mheap.go:553 +0x4e3 fp=0x7fff5fbff748 sp=0x7fff5fbff6f0
runtime.(*mheap).alloc_m(0x2ad600, 0x1, 0x15, 0x0)
/usr/lib/go/src/runtime/mheap.go:437 +0x119 fp=0x7fff5fbff778 sp=0x7fff5fbff748
runtime.(*mheap).alloc.func1()
/usr/lib/go/src/runtime/mheap.go:502 +0x41 fp=0x7fff5fbff7a8 sp=0x7fff5fbff778
runtime.systemstack(0x7fff5fbff7c8)
/usr/lib/go/src/runtime/asm_amd64.s:307 +0xab fp=0x7fff5fbff7b0 sp=0x7fff5fbff7a8
runtime.(*mheap).alloc(0x2ad600, 0x1, 0x10000000015, 0x2dbef)
/usr/lib/go/src/runtime/mheap.go:503 +0x63 fp=0x7fff5fbff7f8 sp=0x7fff5fbff7b0
runtime.(*mcentral).grow(0x2af200, 0x0)
/usr/lib/go/src/runtime/mcentral.go:209 +0x93 fp=0x7fff5fbff860 sp=0x7fff5fbff7f8
runtime.(*mcentral).cacheSpan(0x2af200, 0x2aa1c8)
/usr/lib/go/src/runtime/mcentral.go:89 +0x47d fp=0x7fff5fbff8a0 sp=0x7fff5fbff860
runtime.(*mcache).refill(0x2fb000, 0x15, 0x7fff5fbff908)
/usr/lib/go/src/runtime/mcache.go:119 +0xcc fp=0x7fff5fbff8d8 sp=0x7fff5fbff8a0
runtime.mallocgc.func2()
/usr/lib/go/src/runtime/malloc.go:642 +0x2b fp=0x7fff5fbff8f8 sp=0x7fff5fbff8d8
runtime.systemstack(0x7fff5fbff998)
/usr/lib/go/src/runtime/asm_amd64.s:307 +0xab fp=0x7fff5fbff900 sp=0x7fff5fbff8f8
runtime.mallocgc(0x180, 0x1bb220, 0x0, 0x800000000)
/usr/lib/go/src/runtime/malloc.go:643 +0x869 fp=0x7fff5fbff9d8 sp=0x7fff5fbff900
runtime.newobject(0x1bb220, 0x2aa4d0)
/usr/lib/go/src/runtime/malloc.go:781 +0x42 fp=0x7fff5fbffa00 sp=0x7fff5fbff9d8
runtime.malg(0x8000, 0x2aa740)
/usr/lib/go/src/runtime/proc.go:2634 +0x27 fp=0x7fff5fbffa38 sp=0x7fff5fbffa00
runtime.mpreinit(0x2aaa80)
/usr/lib/go/src/runtime/os1_darwin.go:140 +0x1f fp=0x7fff5fbffa50 sp=0x7fff5fbffa38
runtime.mcommoninit(0x2aaa80)
/usr/lib/go/src/runtime/proc.go:494 +0x105 fp=0x7fff5fbffa98 sp=0x7fff5fbffa50
runtime.schedinit()
/usr/lib/go/src/runtime/proc.go:434 +0x79 fp=0x7fff5fbffae0 sp=0x7fff5fbffa98
runtime.rt0_go(0x7fff5fbffb18, 0x1, 0x7fff5fbffb18, 0x0, 0x0, 0x1, 0x7fff5fbffc50, 0x0, 0x7fff5fbffc5a, 0x7fff5fbffc76, ...)
/usr/lib/go/src/runtime/asm_amd64.s:138 +0x132 fp=0x7fff5fbffae8 sp=0x7fff5fbffae0