fatal error: unexpected signal during runtime execution [signal SIGSEGV: segmentation violation code=0x1 addr=0x4 pc=0x278baf1] runtime stack: runtime.throw({0x528c68?, 0x0?}) GOROOT/src/runtime/panic.go:1047 +0x5d fp=0x7f3290dff050 sp=0x7f3290dff020 pc=0x124d0bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278baf1 stack: frame={sp:0x7f3290dff050, fp:0x7f3290dff0b0} stack=[0x7f32905ff5c0,0x7f3290dff1c0) 0x00007f3290dfef50: 0x000000000000000e 0x000000000000001f 0x00007f3290dfef60: 0x000000000278baf1 0x0000000000000004 0x00007f3290dfef70: 0x0000000000000001 0x000000000124d0bd 0x00007f3290dfef80: 0x00007f3290dff020 0x0000000000510da8 0x00007f3290dfef90: 0x00007f3290dfefd0 0x000000000124d488 0x00007f3290dfefa0: 0x000000c000c65380 0x000000000074d908 0x00007f3290dfefb0: 0x0000000000000001 0x00007f3290dff020 0x00007f3290dfefc0: 0x000000000124d0bd 0x000000c000c65380 0x00007f3290dfefd0: 0x00007f3290dff010 0x000000000124d40c 0x00007f3290dfefe0: 0x00007f3290dfeff0 0x000000c000c65380 0x00007f3290dfeff0: 0x000000000124d440 0x000000c000c65380 0x00007f3290dff000: 0x000000000124d0bd 0x00007f3290dff020 0x00007f3290dff010: 0x00007f3290dff040 0x000000000124d0bd 0x00007f3290dff020: 0x00007f3290dff028 0x000000000124d0e0 0x00007f3290dff030: 0x0000000000528c68 0x000000000000002a 0x00007f3290dff040: 0x00007f3290dff0a0 0x0000000001265bc9 0x00007f3290dff050: <0x0000000000528c68 0x0000000000000000 0x00007f3290dff060: 0x000000c000000001 0x000000c000c65380 0x00007f3290dff070: 0x0000000002ed0a20 0x0000000002ed5a20 0x00007f3290dff080: 0x000000c000c65380 0x0000000002793574 0x00007f3290dff090: 0x0000000002ed0a20 0x0000000000000200 0x00007f3290dff0a0: 0x00007f3290dff128 !0x000000000278baf1 0x00007f3290dff0b0: >0x0000000002ede280 0x0000000002793ce1 0x00007f3290dff0c0: 0x00000000028c389c 0x0000000000000001 0x00007f3290dff0d0: 0x00007f3290dff128 0x00007f3290dff100 0x00007f3290dff0e0: 0x000000c000f50800 0x000000c000c65380 0x00007f3290dff0f0: 0x0000000000010000 0x000000000128747a 0x00007f3290dff100: 0x000000000128786c 0x000000000128949b 0x00007f3290dff110: 0x00000000028c38b8 0x00007f3200000001 0x00007f3290dff120: 0x0000000000000001 0x00007f3290dff168 0x00007f3290dff130: 0x00000000014009a9 0x000000000128786c 0x00007f3290dff140: 0x000000c000d9e670 0x00007f334cb03900 0x00007f3290dff150: 0x00007f334cc17638 0x000000c0000061a0 0x00007f3290dff160: 0x000000c000be0518 0x00007f3290dff198 0x00007f3290dff170: 0x00000000012568e3 0x000000c0000061a0 0x00007f3290dff180: 0x0000000400000002 0x000000c000f50800 0x00007f3290dff190: 0x000000c0000061a0 0x000000c000d9e6b0 0x00007f3290dff1a0: 0x00000000012839c3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7f3290dff0b0 sp=0x7f3290dff050 pc=0x1265bc9