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=0x7f26267fc050 sp=0x7f26267fc020 pc=0x124d0bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278bb11 stack: frame={sp:0x7f26267fc050, fp:0x7f26267fc0b0} stack=[0x7f2625ffc5c0,0x7f26267fc1c0) 0x00007f26267fbf50: 0x000000000000000e 0x000000000000001f 0x00007f26267fbf60: 0x000000000278bb11 0x0000000000000004 0x00007f26267fbf70: 0x0000000000000001 0x000000000124d0bd 0x00007f26267fbf80: 0x00007f26267fc020 0x0000000000510da8 0x00007f26267fbf90: 0x00007f26267fbfd0 0x000000000124d488 0x00007f26267fbfa0: 0x000000c0006e9a00 0x000000000074d908 0x00007f26267fbfb0: 0x0000000000000001 0x00007f26267fc020 0x00007f26267fbfc0: 0x000000000124d0bd 0x000000c0006e9a00 0x00007f26267fbfd0: 0x00007f26267fc010 0x000000000124d40c 0x00007f26267fbfe0: 0x00007f26267fbff0 0x000000c0006e9a00 0x00007f26267fbff0: 0x000000000124d440 0x000000c0006e9a00 0x00007f26267fc000: 0x000000000124d0bd 0x00007f26267fc020 0x00007f26267fc010: 0x00007f26267fc040 0x000000000124d0bd 0x00007f26267fc020: 0x00007f26267fc028 0x000000000124d0e0 0x00007f26267fc030: 0x0000000000528c68 0x000000000000002a 0x00007f26267fc040: 0x00007f26267fc0a0 0x0000000001265bc9 0x00007f26267fc050: <0x0000000000528c68 0x0000000000000000 0x00007f26267fc060: 0x000000c001716800 0x00007f26267fc0a0 0x00007f26267fc070: 0x00000000028cf5c0 0x000000000118dc58 0x00007f26267fc080: 0x000000c0006e9a00 0x0000000001287e53 0x00007f26267fc090: 0x00000000028cf5c0 0x00000000028cf5c0 0x00007f26267fc0a0: 0x00007f26267fc128 !0x000000000278bb11 0x00007f26267fc0b0: >0x00007f26267fc0f8 0x0000000001251ca7 0x00007f26267fc0c0: 0x00000000028c389c 0x0000000000000001 0x00007f26267fc0d0: 0x00007f26267fc128 0x00007f26267fc100 0x00007f26267fc0e0: 0x000000c001716800 0x000000c0006e9a00 0x00007f26267fc0f0: 0x0000400000000000 0x000000000128747a 0x00007f26267fc100: 0x000000000128786c 0x000000000128949b 0x00007f26267fc110: 0x00000000028c38b8 0x00007f2600000001 0x00007f26267fc120: 0x0000000000000001 0x00007f26267fc168 0x00007f26267fc130: 0x00000000014009a9 0x000000000128786c 0x00007f26267fc140: 0x000000c000cf4670 0x00007f2783003900 0x00007f26267fc150: 0x00007f275810f840 0x000000c0000061a0 0x00007f26267fc160: 0x000000c00076b208 0x00007f26267fc198 0x00007f26267fc170: 0x00000000012568e3 0x000000c0000061a0 0x00007f26267fc180: 0x0000000400000002 0x000000c001716800 0x00007f26267fc190: 0x000000c0000061a0 0x000000c000cf46b0 0x00007f26267fc1a0: 0x00000000012839c3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7f26267fc0b0 sp=0x7f26267fc050 pc=0x1265bc9