unexpected fault address 0x0
fatal error: fault
[signal SIGBUS: bus error code=0x80 addr=0x0 pc=0x5561eb]

goroutine 10 [running]:
runtime.throw({0xb04b18?, 0xc0014e4570?})
	/usr/local/go/src/runtime/panic.go:1077 +0x5c fp=0xc0015a8e90 sp=0xc0015a8e60 pc=0x439ffc
runtime.sigpanic()
	/usr/local/go/src/runtime/signal_unix.go:858 +0x116 fp=0xc0015a8ef0 sp=0xc0015a8e90 pc=0x450b96
github.com/google/syzkaller/prog.(*execContext).serializeCall.(*execContext).writeCopyin.func1({0xd9e9c0, 0xc0014dcf30}, 0xc00177f3b0)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:167 +0x12b fp=0xc0015a8f40 sp=0xc0015a8ef0 pc=0x5561eb
github.com/google/syzkaller/prog.foreachArgImpl({0xd9e9c0?, 0xc0014dcf30?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:164 +0x224 fp=0xc0015a9110 sp=0xc0015a8f40 pc=0x544a64
github.com/google/syzkaller/prog.foreachArgImpl({0xd9eac0?, 0xc0014d7ea0?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:181 +0x4ce fp=0xc0015a92e0 sp=0xc0015a9110 pc=0x544d0e
github.com/google/syzkaller/prog.foreachArgImpl({0xd9eac0?, 0xc0014d7ee0?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:181 +0x4ce fp=0xc0015a94b0 sp=0xc0015a92e0 pc=0x544d0e
github.com/google/syzkaller/prog.foreachArgImpl({0xd9ea00?, 0xc0014e4570?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:200 +0x3d8 fp=0xc0015a9680 sp=0xc0015a94b0 pc=0x544c18
github.com/google/syzkaller/prog.foreachArgImpl({0xd9eac0?, 0xc0014d7f20?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:181 +0x4ce fp=0xc0015a9850 sp=0xc0015a9680 pc=0x544d0e
github.com/google/syzkaller/prog.foreachArgImpl({0xd9ea00?, 0xc0014e4600?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:200 +0x3d8 fp=0xc0015a9a20 sp=0xc0015a9850 pc=0x544c18
github.com/google/syzkaller/prog.ForeachArg(0xc0014ff5e0, 0xd9e9c0?)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:150 +0xde fp=0xc0015a9a78 sp=0xc0015a9a20 pc=0x5447de
github.com/google/syzkaller/prog.(*execContext).writeCopyin(...)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:153
github.com/google/syzkaller/prog.(*execContext).serializeCall(0xc0015a9b68, 0xc0014ff5e0)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:88 +0x54 fp=0xc0015a9b08 sp=0xc0015a9a78 pc=0x555b54
github.com/google/syzkaller/prog.(*Prog).SerializeForExec(0xc00150d000, {0x7f318ef5f000, 0x400000, 0x400000})
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:76 +0x159 fp=0xc0015a9d10 sp=0xc0015a9b08 pc=0x5559d9
github.com/google/syzkaller/pkg/ipc.(*Env).Exec(0xc0002415f0, 0xc0000befa8?, 0xc00150d000)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:257 +0x4b fp=0xc0015a9db0 sp=0xc0015a9d10 pc=0x978bab
main.(*Context).execute(0xc001515400, 0x4?, 0x0?, 0x0?, 0x0?)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:181 +0x145 fp=0xc0015a9f28 sp=0xc0015a9db0 pc=0x97f545
main.(*Context).run(0xc001515400, 0x0?)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:166 +0xbb fp=0xc0015a9fa0 sp=0xc0015a9f28 pc=0x97f2db
main.main.func3()
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:127 +0x51 fp=0xc0015a9fe0 sp=0xc0015a9fa0 pc=0x97f0f1
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0015a9fe8 sp=0xc0015a9fe0 pc=0x46d341
created by main.main in goroutine 1
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:125 +0x5bf

goroutine 1 [semacquire]:
runtime.gopark(0xc000091380?, 0xc0011bfda8?, 0xe0?, 0x13?, 0xc0014dfde0?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc00189fd38 sp=0xc00189fd18 pc=0x43ce2e
runtime.goparkunlock(...)
	/usr/local/go/src/runtime/proc.go:404
runtime.semacquire1(0xc001517148, 0xb0?, 0x1, 0x0, 0xa0?)
	/usr/local/go/src/runtime/sema.go:160 +0x218 fp=0xc00189fda0 sp=0xc00189fd38 pc=0x44e178
sync.runtime_Semacquire(0x53082f?)
	/usr/local/go/src/runtime/sema.go:62 +0x25 fp=0xc00189fdd8 sp=0xc00189fda0 pc=0x4693a5
sync.(*WaitGroup).Wait(0xc001494780?)
	/usr/local/go/src/sync/waitgroup.go:116 +0x48 fp=0xc00189fe00 sp=0xc00189fdd8 pc=0x4797e8
main.main()
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:131 +0x646 fp=0xc00189ff40 sp=0xc00189fe00 pc=0x97ef66
runtime.main()
	/usr/local/go/src/runtime/proc.go:267 +0x2bb fp=0xc00189ffe0 sp=0xc00189ff40 pc=0x43c9db
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc00189ffe8 sp=0xc00189ffe0 pc=0x46d341

goroutine 2 [force gc (idle)]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc000054fa8 sp=0xc000054f88 pc=0x43ce2e
runtime.goparkunlock(...)
	/usr/local/go/src/runtime/proc.go:404
runtime.forcegchelper()
	/usr/local/go/src/runtime/proc.go:322 +0xb3 fp=0xc000054fe0 sp=0xc000054fa8 pc=0x43ccb3
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000054fe8 sp=0xc000054fe0 pc=0x46d341
created by runtime.init.6 in goroutine 1
	/usr/local/go/src/runtime/proc.go:310 +0x1a

goroutine 17 [GC sweep wait]:
runtime.gopark(0x1?, 0x0?, 0x0?, 0x0?, 0x0?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc000050778 sp=0xc000050758 pc=0x43ce2e
runtime.goparkunlock(...)
	/usr/local/go/src/runtime/proc.go:404
runtime.bgsweep(0x0?)
	/usr/local/go/src/runtime/mgcsweep.go:321 +0xdf fp=0xc0000507c8 sp=0xc000050778 pc=0x427e1f
runtime.gcenable.func1()
	/usr/local/go/src/runtime/mgc.go:200 +0x25 fp=0xc0000507e0 sp=0xc0000507c8 pc=0x41cfa5
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0000507e8 sp=0xc0000507e0 pc=0x46d341
created by runtime.gcenable in goroutine 1
	/usr/local/go/src/runtime/mgc.go:200 +0x66

goroutine 18 [GC scavenge wait]:
runtime.gopark(0xc000088000?, 0xd521c0?, 0x0?, 0x0?, 0x0?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc000050f70 sp=0xc000050f50 pc=0x43ce2e
runtime.goparkunlock(...)
	/usr/local/go/src/runtime/proc.go:404
runtime.(*scavengerState).park(0x231a8c0)
	/usr/local/go/src/runtime/mgcscavenge.go:425 +0x49 fp=0xc000050fa0 sp=0xc000050f70 pc=0x4256a9
runtime.bgscavenge(0x0?)
	/usr/local/go/src/runtime/mgcscavenge.go:658 +0x59 fp=0xc000050fc8 sp=0xc000050fa0 pc=0x425c59
runtime.gcenable.func2()
	/usr/local/go/src/runtime/mgc.go:201 +0x25 fp=0xc000050fe0 sp=0xc000050fc8 pc=0x41cf45
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000050fe8 sp=0xc000050fe0 pc=0x46d341
created by runtime.gcenable in goroutine 1
	/usr/local/go/src/runtime/mgc.go:201 +0xa5

goroutine 19 [finalizer wait]:
runtime.gopark(0x0?, 0xcbaec8?, 0xc0?, 0x40?, 0x2000000020?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc000054628 sp=0xc000054608 pc=0x43ce2e
runtime.runfinq()
	/usr/local/go/src/runtime/mfinal.go:193 +0x107 fp=0xc0000547e0 sp=0xc000054628 pc=0x41c027
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0000547e8 sp=0xc0000547e0 pc=0x46d341
created by runtime.createfing in goroutine 1
	/usr/local/go/src/runtime/mfinal.go:163 +0x3d

goroutine 20 [select]:
runtime.gopark(0xc000051788?, 0x3?, 0xd8?, 0xb?, 0xc000051772?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc000051618 sp=0xc0000515f8 pc=0x43ce2e
runtime.selectgo(0xc000051788, 0xc00005176c, 0xc0000f7980?, 0x0, 0x0?, 0x1)
	/usr/local/go/src/runtime/select.go:327 +0x725 fp=0xc000051738 sp=0xc000051618 pc=0x44d145
go.opencensus.io/stats/view.(*worker).start(0xc0000f7980)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/vendor/go.opencensus.io/stats/view/worker.go:292 +0x9f fp=0xc0000517c8 sp=0xc000051738 pc=0x94487f
go.opencensus.io/stats/view.init.0.func1()
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/vendor/go.opencensus.io/stats/view/worker.go:34 +0x25 fp=0xc0000517e0 sp=0xc0000517c8 pc=0x943ba5
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0000517e8 sp=0xc0000517e0 pc=0x46d341
created by go.opencensus.io/stats/view.init.0 in goroutine 1
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/vendor/go.opencensus.io/stats/view/worker.go:34 +0x8d

goroutine 21 [GC worker (idle)]:
runtime.gopark(0xbeaede74d?, 0x0?, 0x0?, 0x0?, 0x0?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc000051f50 sp=0xc000051f30 pc=0x43ce2e
runtime.gcBgMarkWorker()
	/usr/local/go/src/runtime/mgc.go:1293 +0xe5 fp=0xc000051fe0 sp=0xc000051f50 pc=0x41eb25
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000051fe8 sp=0xc000051fe0 pc=0x46d341
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/usr/local/go/src/runtime/mgc.go:1217 +0x1c

goroutine 3 [GC worker (idle)]:
runtime.gopark(0xbeaf92b7d?, 0x3?, 0xb3?, 0x75?, 0x0?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc000055750 sp=0xc000055730 pc=0x43ce2e
runtime.gcBgMarkWorker()
	/usr/local/go/src/runtime/mgc.go:1293 +0xe5 fp=0xc0000557e0 sp=0xc000055750 pc=0x41eb25
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0000557e8 sp=0xc0000557e0 pc=0x46d341
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/usr/local/go/src/runtime/mgc.go:1217 +0x1c

goroutine 6 [IO wait]:
runtime.gopark(0xc0014ffdb8?, 0xb?, 0x0?, 0x0?, 0x21?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc0015b59b8 sp=0xc0015b5998 pc=0x43ce2e
runtime.netpollblock(0x4c06f8?, 0x407de6?, 0x0?)
	/usr/local/go/src/runtime/netpoll.go:564 +panic during panic
SIGBUS: bus error
PC=0x46eb15 m=10 sigcode=128

goroutine 0 [idle]:
runtime.write1()
	/usr/local/go/src/runtime/sys_linux_amd64.s:99 +0x15 fp=0xc00157f630 sp=0xc00157f628 pc=0x46eb15
runtime.write(0xb02753?, 0x2?, 0x2?)
	/usr/local/go/src/runtime/time_nofake.go:31 +0x31 fp=0xc00157f660 sp=0xc00157f630 pc=0x45bbb1
runtime.writeErr(...)
	/usr/local/go/src/runtime/write_err.go:12
runtime.gwrite({0xb02753, 0x2, 0x0?})
	/usr/local/go/src/runtime/print.go:97 +0xef fp=0xc00157f698 sp=0xc00157f660 pc=0x43bc6f
runtime.printstring({0xb02753?, 0xc00157f7a0?})
	/usr/local/go/src/runtime/print.go:246 +0x54 fp=0xc00157f6e8 sp=0xc00157f698 pc=0x43c394
runtime.traceback2(0xc00157fc58, 0x0, 0x0, 0x30)
	/usr/local/go/src/runtime/traceback.go:1022 +0x5ac fp=0xc00157f950 sp=0xc00157f6e8 pc=0x45feac
runtime.traceback1.func1(0xa0?)
	/usr/local/go/src/runtime/traceback.go:923 +0x65 fp=0xc00157fb20 sp=0xc00157f950 pc=0x45f7e5
runtime.traceback1(0xc0000076c0?, 0x1c80006a900?, 0x5447de?, 0xc0000076c0, 0x0?)
	/usr/local/go/src/runtime/traceback.go:946 +0x212 fp=0xc00157fe30 sp=0xc00157fb20 pc=0x45f652
runtime.traceback(...)
	/usr/local/go/src/runtime/traceback.go:823
runtime.tracebackothers.func1(0xc0000076c0)
	/usr/local/go/src/runtime/traceback.go:1254 +0xe5 fp=0xc00157fe70 sp=0xc00157fe30 pc=0x460f65
runtime.forEachGRace(0xc00157fed8)
	/usr/local/go/src/runtime/proc.go:621 +0x49 fp=0xc00157fea0 sp=0xc00157fe70 pc=0x43d849
runtime.tracebackothers(0xc00008c680?)
	/usr/local/go/src/runtime/traceback.go:1240 +0xdb fp=0xc00157ff08 sp=0xc00157fea0 pc=0x460e5b
runtime.dopanic_m(0xc00008c680, 0x43a06f?, 0xb04b18?)
	/usr/local/go/src/runtime/panic.go:1316 +0x2a6 fp=0xc00157ff88 sp=0xc00157ff08 pc=0x43a986
runtime.fatalthrow.func1()
	/usr/local/go/src/runtime/panic.go:1170 +0x6b fp=0xc00157ffc8 sp=0xc00157ff88 pc=0x43a3ab
traceback: unexpected SPWRITE function runtime.systemstack
runtime.systemstack()
	/usr/local/go/src/runtime/asm_amd64.s:509 +0x4a fp=0xc00157ffd8 sp=0xc00157ffc8 pc=0x46b54a

goroutine 10 [running]:
runtime.systemstack_switch()
	/usr/local/go/src/runtime/asm_amd64.s:474 +0x8 fp=0xc0015a8e20 sp=0xc0015a8e10 pc=0x46b4e8
runtime.fatalthrow(0x15a8e68?)
	/usr/local/go/src/runtime/panic.go:1163 +0x65 fp=0xc0015a8e60 sp=0xc0015a8e20 pc=0x43a305
runtime.throw({0xb04b18?, 0xc0014e4570?})
	/usr/local/go/src/runtime/panic.go:1077 +0x5c fp=0xc0015a8e90 sp=0xc0015a8e60 pc=0x439ffc
runtime.sigpanic()
	/usr/local/go/src/runtime/signal_unix.go:858 +0x116 fp=0xc0015a8ef0 sp=0xc0015a8e90 pc=0x450b96
github.com/google/syzkaller/prog.(*execContext).serializeCall.(*execContext).writeCopyin.func1({0xd9e9c0, 0xc0014dcf30}, 0xc00177f3b0)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:167 +0x12b fp=0xc0015a8f40 sp=0xc0015a8ef0 pc=0x5561eb
github.com/google/syzkaller/prog.foreachArgImpl({0xd9e9c0?, 0xc0014dcf30?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:164 +0x224 fp=0xc0015a9110 sp=0xc0015a8f40 pc=0x544a64
github.com/google/syzkaller/prog.foreachArgImpl({0xd9eac0?, 0xc0014d7ea0?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:181 +0x4ce fp=0xc0015a92e0 sp=0xc0015a9110 pc=0x544d0e
github.com/google/syzkaller/prog.foreachArgImpl({0xd9eac0?, 0xc0014d7ee0?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:181 +0x4ce fp=0xc0015a94b0 sp=0xc0015a92e0 pc=0x544d0e
github.com/google/syzkaller/prog.foreachArgImpl({0xd9ea00?, 0xc0014e4570?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:200 +0x3d8 fp=0xc0015a9680 sp=0xc0015a94b0 pc=0x544c18
github.com/google/syzkaller/prog.foreachArgImpl({0xd9eac0?, 0xc0014d7f20?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:181 +0x4ce fp=0xc0015a9850 sp=0xc0015a9680 pc=0x544d0e
github.com/google/syzkaller/prog.foreachArgImpl({0xd9ea00?, 0xc0014e4600?}, 0xc00177f3b0, 0xc0015a9ae8)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:200 +0x3d8 fp=0xc0015a9a20 sp=0xc0015a9850 pc=0x544c18
github.com/google/syzkaller/prog.ForeachArg(0xc0014ff5e0, 0xd9e9c0?)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/analysis.go:150 +0xde fp=0xc0015a9a78 sp=0xc0015a9a20 pc=0x5447de
github.com/google/syzkaller/prog.(*execContext).writeCopyin(...)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:153
github.com/google/syzkaller/prog.(*execContext).serializeCall(0xc0015a9b68, 0xc0014ff5e0)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:88 +0x54 fp=0xc0015a9b08 sp=0xc0015a9a78 pc=0x555b54
github.com/google/syzkaller/prog.(*Prog).SerializeForExec(0xc00150d000, {0x7f318ef5f000, 0x400000, 0x400000})
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/prog/encodingexec.go:76 +0x159 fp=0xc0015a9d10 sp=0xc0015a9b08 pc=0x5559d9
github.com/google/syzkaller/pkg/ipc.(*Env).Exec(0xc0002415f0, 0xc0000befa8?, 0xc00150d000)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/pkg/ipc/ipc.go:257 +0x4b fp=0xc0015a9db0 sp=0xc0015a9d10 pc=0x978bab
main.(*Context).execute(0xc001515400, 0x4?, 0x0?, 0x0?, 0x0?)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:181 +0x145 fp=0xc0015a9f28 sp=0xc0015a9db0 pc=0x97f545
main.(*Context).run(0xc001515400, 0x0?)
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:166 +0xbb fp=0xc0015a9fa0 sp=0xc0015a9f28 pc=0x97f2db
main.main.func3()
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:127 +0x51 fp=0xc0015a9fe0 sp=0xc0015a9fa0 pc=0x97f0f1
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0015a9fe8 sp=0xc0015a9fe0 pc=0x46d341
created by main.main in goroutine 1
	/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/tools/syz-execprog/execprog.go:125 +0x5bf

goroutine 1 [semacquire]:
runtime.gopark(0xc000091380?, 0xc0011bfda8?, 0xe0?, 0x13?, 0xc0014dfde0?)
	/usr/local/go/src/runtime/proc.go:398 +0xce fp=0xc00189fd38 sp=0xc00189fd18 pc=0x43ce2e
runtime.goparkunlock(...)
	/usr/local/go/src/runtime/proc.go:404
runtime.semacquire1(0xc001517148, 0xb0?, 0x1, 0x0, 0xa0?)
	/usr/local/go/src/runtime/sema.go:160 +0x218 fp=0xc00189fda0 sp=0xc00189fd38 pc=0x44e178
sync.runtime_Semacquire(0x53082f?)
	/usr/local/go/src/runtime/sema.go:62 Connection to 10.128.1.104 closed by remote host.