fatal error: runtime: out of memory

runtime stack:
runtime.throw(0x1798ff, 0x16)
	/usr/local/go/src/runtime/panic.go:605 +0x70
runtime.sysMap(0x40d30000, 0x1ea00000, 0x753fec01, 0x591fa0)
	/usr/local/go/src/runtime/mem_linux.go:227 +0x104
runtime.(*mheap).sysAlloc(0x279988, 0x1ea00000, 0x1)
	/usr/local/go/src/runtime/malloc.go:470 +0x240
runtime.(*mheap).grow(0x279988, 0xf500, 0x0)
	/usr/local/go/src/runtime/mheap.go:887 +0x48
runtime.(*mheap).allocSpanLocked(0x279988, 0xf500, 0x591fb0, 0x591f28)
	/usr/local/go/src/runtime/mheap.go:800 +0x30c
runtime.(*mheap).alloc_m(0x279988, 0xf500, 0x753f0100, 0xffffffff)
	/usr/local/go/src/runtime/mheap.go:666 +0x118
runtime.(*mheap).alloc.func1()
	/usr/local/go/src/runtime/mheap.go:733 +0x3c
runtime.systemstack(0x753fedb4)
	/usr/local/go/src/runtime/asm_arm.s:278 +0xa8
runtime.(*mheap).alloc(0x279988, 0xf500, 0x10100, 0x10d54280)
	/usr/local/go/src/runtime/mheap.go:732 +0x60
runtime.largeAlloc(0x1ea00000, 0x136d0001, 0x2)
	/usr/local/go/src/runtime/malloc.go:827 +0x7c
runtime.mallocgc.func1()
	/usr/local/go/src/runtime/malloc.go:722 +0x38
runtime.systemstack(0x10d1b500)
	/usr/local/go/src/runtime/asm_arm.s:264 +0x80
runtime.mstart()
	/usr/local/go/src/runtime/proc.go:1135

goroutine 1 [running]:
runtime.systemstack_switch()
	/usr/local/go/src/runtime/asm_arm.s:209 +0x4 fp=0x136d7864 sp=0x136d7860 pc=0x63cbc
runtime.mallocgc(0x1ea00000, 0x154528, 0x10d6a001, 0x5d)
	/usr/local/go/src/runtime/malloc.go:721 +0x6a8 fp=0x136d78c0 sp=0x136d7864 pc=0x220e4
runtime.makeslice(0x154528, 0x40000, 0x40000, 0x0, 0x10d0e0e8, 0x10d1c03c)
	/usr/local/go/src/runtime/slice.go:54 +0x68 fp=0x136d78d4 sp=0x136d78c0 pc=0x51b18
github.com/google/gopacket/tcpassembly.(*pageCache).grow(0x10d70180)
	/home/pi/go/src/github.com/google/gopacket/tcpassembly/assembly.go:124 +0x2c fp=0x136d7940 sp=0x136d78d4 pc=0x117890
github.com/google/gopacket/tcpassembly.(*pageCache).next(0x10d70180, 0x3b4b3eb8, 0x0, 0xd1e7da4c, 0xe, 0x266c90, 0x2)
	/home/pi/go/src/github.com/google/gopacket/tcpassembly/assembly.go:145 +0x184 fp=0x136d799c sp=0x136d7940 pc=0x117d24
github.com/google/gopacket/tcpassembly.(*Assembler).pagesFromTCP(0x10d50940, 0x40bfeb00, 0x3b4b3eb8, 0x0, 0xd1e7da4c, 0xe, 0x266c90, 0x0, 0x0, 0x0)
	/home/pi/go/src/github.com/google/gopacket/tcpassembly/assembly.go:736 +0x2c fp=0x136d79e8 sp=0x136d799c pc=0x11a56c
github.com/google/gopacket/tcpassembly.(*Assembler).insertIntoConn(0x10d50940, 0x40bfeb00, 0x1104fea0, 0x3b4b3eb8, 0x0, 0xd1e7da4c, 0xe, 0x266c90)
	/home/pi/go/src/github.com/google/gopacket/tcpassembly/assembly.go:717 +0x7c fp=0x136d7a54 sp=0x136d79e8 pc=0x11a214
github.com/google/gopacket/tcpassembly.(*Assembler).AssembleWithTimestamp(0x10d50940, 0x1, 0x0, 0x4, 0x4, 0x2c40eb53, 0x0, 0x0, 0x0, 0x730a0a0a, ...)
	/home/pi/go/src/github.com/google/gopacket/tcpassembly/assembly.go:585 +0x424 fp=0x136d7e54 sp=0x136d7a54 pc=0x119138
main.main()
	/home/pi/issyslogsender/bidi.go:183 +0x5d8 fp=0x136d7fb8 sp=0x136d7e54 pc=0x11c2cc
runtime.main()
	/usr/local/go/src/runtime/proc.go:195 +0x21c fp=0x136d7fe4 sp=0x136d7fb8 pc=0x3d230
runtime.goexit()
	/usr/local/go/src/runtime/asm_arm.s:971 +0x4 fp=0x136d7fe4 sp=0x136d7fe4 pc=0x65d14

goroutine 5 [runnable, locked to thread]:
github.com/google/gopacket/pcap._Cfunc_pcap_next_ex_escaping(0x9c32f8, 0x10d540b0, 0x10d540b4, 0x1)
	github.com/google/gopacket/pcap/_obj/_cgo_gotypes.go:448 +0x38
github.com/google/gopacket/pcap.(*Handle).getNextBufPtrLocked.func1(0x9c32f8, 0x10d540b0, 0x10d540b4, 0x259f58)
	/home/pi/go/src/github.com/google/gopacket/pcap/pcap.go:387 +0x54
github.com/google/gopacket/pcap.(*Handle).getNextBufPtrLocked(0x10d54080, 0x10d30f3c, 0x25c441, 0x22d5c)
	/home/pi/go/src/github.com/google/gopacket/pcap/pcap.go:387 +0xa8
github.com/google/gopacket/pcap.(*Handle).ReadPacketData(0x10d54080, 0x1, 0x0, 0x16601, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	/home/pi/go/src/github.com/google/gopacket/pcap/pcap.go:324 +0x48
github.com/google/gopacket.(*PacketSource).NextPacket(0x10d50960, 0x10d30fdc, 0x400c6f00, 0x0, 0x0)
	/home/pi/go/src/github.com/google/gopacket/packet.go:795 +0x38
github.com/google/gopacket.(*PacketSource).packetsToChannel(0x10d50960)
	/home/pi/go/src/github.com/google/gopacket/packet.go:812 +0x44
created by github.com/google/gopacket.(*PacketSource).Packets
	/home/pi/go/src/github.com/google/gopacket/packet.go:835 +0x84