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=0x7f24f5384050 sp=0x7f24f5384020 pc=0x124d0bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278bb11 stack: frame={sp:0x7f24f5384050, fp:0x7f24f53840b0} stack=[0x7f24f4b845c0,0x7f24f53841c0) 0x00007f24f5383f50: 0x000000000000000e 0x000000000000001f 0x00007f24f5383f60: 0x000000000278bb11 0x0000000000000004 0x00007f24f5383f70: 0x0000000000000001 0x000000000124d0bd 0x00007f24f5383f80: 0x00007f24f5384020 0x0000000000510da8 0x00007f24f5383f90: 0x00007f24f5383fd0 0x000000000124d488 0x00007f24f5383fa0: 0x000000c0009021a0 0x000000000074d908 0x00007f24f5383fb0: 0x0000000000000001 0x00007f24f5384020 0x00007f24f5383fc0: 0x000000000124d0bd 0x000000c0009021a0 0x00007f24f5383fd0: 0x00007f24f5384010 0x000000000124d40c 0x00007f24f5383fe0: 0x00007f24f5383ff0 0x000000c0009021a0 0x00007f24f5383ff0: 0x000000000124d440 0x000000c0009021a0 0x00007f24f5384000: 0x000000000124d0bd 0x00007f24f5384020 0x00007f24f5384010: 0x00007f24f5384040 0x000000000124d0bd 0x00007f24f5384020: 0x00007f24f5384028 0x000000000124d0e0 0x00007f24f5384030: 0x0000000000528c68 0x000000000000002a 0x00007f24f5384040: 0x00007f24f53840a0 0x0000000001265bc9 0x00007f24f5384050: <0x0000000000528c68 0x0000000000000000 0x00007f24f5384060: 0x000000c000000001 0x000000c0009021a0 0x00007f24f5384070: 0x0000000002ed0a20 0x0000000002ed5a20 0x00007f24f5384080: 0x000000c0009021a0 0x0000000002793594 0x00007f24f5384090: 0x0000000002ed0a20 0x0000000000000200 0x00007f24f53840a0: 0x00007f24f5384128 !0x000000000278bb11 0x00007f24f53840b0: >0x0000000002ede280 0x0000000002793d01 0x00007f24f53840c0: 0x00000000028c389c 0x0000000000000001 0x00007f24f53840d0: 0x00007f24f5384128 0x00007f24f5384100 0x00007f24f53840e0: 0x000000c000900000 0x000000c0009021a0 0x00007f24f53840f0: 0x000000c000900000 0x000000000128747a 0x00007f24f5384100: 0x000000000128786c 0x000000000128949b 0x00007f24f5384110: 0x00000000028c38b8 0x00007f2400000001 0x00007f24f5384120: 0x0000000000000001 0x00007f24f5384168 0x00007f24f5384130: 0x00000000014009a9 0x000000000128786c 0x00007f24f5384140: 0x000000c000ca6670 0x00007f2537403900 0x00007f24f5384150: 0x00007f250c5a1c58 0x000000c0000061a0 0x00007f24f5384160: 0x000000c000ae2188 0x00007f24f5384198 0x00007f24f5384170: 0x00000000012568e3 0x000000c0000061a0 0x00007f24f5384180: 0x0000000400000002 0x000000c000900000 0x00007f24f5384190: 0x000000c0000061a0 0x000000c000ca66b0 0x00007f24f53841a0: 0x00000000012839c3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7f24f53840b0 sp=0x7f24f5384050 pc=0x1265bc9