fatal error: unexpected signal during runtime execution [signal SIGSEGV: segmentation violation code=0x1 addr=0x4 pc=0x278bb11] runtime stack: runtime.throw({0x528c68?, 0x0?}) GOROOT/src/runtime/panic.go:1047 +0x5d fp=0x7fd676b89050 sp=0x7fd676b89020 pc=0x124d0bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278bb11 stack: frame={sp:0x7fd676b89050, fp:0x7fd676b890b0} stack=[0x7fd6763895c0,0x7fd676b891c0) 0x00007fd676b88f50: 0x000000000000000e 0x000000000000001f 0x00007fd676b88f60: 0x000000000278bb11 0x0000000000000004 0x00007fd676b88f70: 0x0000000000000001 0x000000000124d0bd 0x00007fd676b88f80: 0x00007fd676b89020 0x0000000000510da8 0x00007fd676b88f90: 0x00007fd676b88fd0 0x000000000124d488 0x00007fd676b88fa0: 0x000000c000006ea0 0x000000000074d908 0x00007fd676b88fb0: 0x0000000000000001 0x00007fd676b89020 0x00007fd676b88fc0: 0x000000000124d0bd 0x000000c000006ea0 0x00007fd676b88fd0: 0x00007fd676b89010 0x000000000124d40c 0x00007fd676b88fe0: 0x00007fd676b88ff0 0x000000c000006ea0 0x00007fd676b88ff0: 0x000000000124d440 0x000000c000006ea0 0x00007fd676b89000: 0x000000000124d0bd 0x00007fd676b89020 0x00007fd676b89010: 0x00007fd676b89040 0x000000000124d0bd 0x00007fd676b89020: 0x00007fd676b89028 0x000000000124d0e0 0x00007fd676b89030: 0x0000000000528c68 0x000000000000002a 0x00007fd676b89040: 0x00007fd676b890a0 0x0000000001265bc9 0x00007fd676b89050: <0x0000000000528c68 0x0000000000000000 0x00007fd676b89060: 0x00007fd676b89090 0x00007fd676b89090 0x00007fd676b89070: 0x0000000002ed0a20 0x0000000002ed5a20 0x00007fd676b89080: 0x000000c000006ea0 0x0000000002793594 0x00007fd676b89090: 0x0000000002ed0a20 0x0000000000000200 0x00007fd676b890a0: 0x00007fd676b89128 !0x000000000278bb11 0x00007fd676b890b0: >0x0000000002ede280 0x0000000002793d01 0x00007fd676b890c0: 0x00000000028c389c 0x0000000000000001 0x00007fd676b890d0: 0x00007fd676b89128 0x00007fd676b89100 0x00007fd676b890e0: 0x000000c000138800 0x000000c000006ea0 0x00007fd676b890f0: 0x0000000000000040 0x000000000128747a 0x00007fd676b89100: 0x000000000128786c 0x000000000128949b 0x00007fd676b89110: 0x00000000028c38b8 0x00007fd600000001 0x00007fd676b89120: 0x0000000000000001 0x00007fd676b89168 0x00007fd676b89130: 0x00000000014009a9 0x000000000128786c 0x00007fd676b89140: 0x000000c000cc6670 0x00007fd69f803900 0x00007fd676b89150: 0x00007fd6741207e0 0x000000c0000061a0 0x00007fd676b89160: 0x000000c0005689f8 0x00007fd676b89198 0x00007fd676b89170: 0x00000000012568e3 0x000000c0000061a0 0x00007fd676b89180: 0x0000000400000002 0x000000c000138800 0x00007fd676b89190: 0x000000c0000061a0 0x000000c000cc66b0 0x00007fd676b891a0: 0x00000000012839c3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7fd676b890b0 sp=0x7fd676b89050 pc=0x1265bc9