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runtime/cgo: SEGV in runtime.cgocall #61478

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omerfirmak opened this issue Jul 20, 2023 · 5 comments
Closed

runtime/cgo: SEGV in runtime.cgocall #61478

omerfirmak opened this issue Jul 20, 2023 · 5 comments
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compiler/runtime Issues related to the Go compiler and/or runtime. FrozenDueToAge WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided.

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@omerfirmak
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What version of Go are you using (go version)?

$ go version
go version go1.21rc3 linux/amd64

Does this issue reproduce with the latest release?

No

What operating system and processor architecture are you using (go env)?

go env Output
$ go env
GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/root/.cache/go-build'
GOENV='/root/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.21rc3'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='0'
GOMOD='/dev/null'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -fno-caret-diagnostics -Qunused-arguments -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build3092309087=/tmp/go-build -gno-record-gcc-switches'

What did you do?

Make a cgo function call

What did you expect to see?

Not fail

What did you see instead?

A SEGV with trace;

SIGSEGV: segmentation violation
PC=0xfe4e62 m=16 sigcode=2
signal arrived during cgo execution

goroutine 296 [syscall]:
runtime.cgocall(0xe01780, 0xc000cf0d00)
	/usr/local/go/src/runtime/cgocall.go:157 +0x4b fp=0xc000cf0cd8 sp=0xc000cf0ca0 pc=0x4a030b
github.com/NethermindEth/juno/vm._Cfunc_cairoVMExecute(0x7f2e91fd5010, 0x7f2e91fd0210, 0x1, 0x1792e, 0x64a2abb9, 0x7f2e91fd0220, 0xc000929600)
	_cgo_gotypes.go:159 +0x45 fp=0xc000cf0d00 sp=0xc000cf0cd8 pc=0xd56f05
github.com/NethermindEth/juno/vm.Execute({0xc0013f0540, 0x1, 0x1}, {0x0, 0x0, 0x0}, 0x2?, 0x2?, 0xc0009291c0, {0x265de58, ...}, ...)
	/app/vm/vm.go:138 +0x305 fp=0xc000cf0e90 sp=0xc000cf0d00 pc=0xd594c5
github.com/NethermindEth/juno/rpc.(*Handler).EstimateFee(0xc0001c27e0, {0xc0009323f0, 0x1, 0x7?}, {0x0, 0x0, 0xc000928fa0, 0x0})
	/app/rpc/handlers.go:1106 +0x57d fp=0xc000cf1038 sp=0xc000cf0e90 pc=0xd6093d
github.com/NethermindEth/juno/rpc.(*Handler).EstimateFee-fm({0xc0009323f0?, 0x0?, 0xc0007ca0c0?}, {0x4?, 0x0?, 0xc000928fa0?, 0xc000923fb0?})
	<autogenerated>:1 +0x45 fp=0xc000cf1080 sp=0xc000cf1038 pc=0xd87385
runtime.call64(0xc00092c720, 0xc0004d02b0, 0x0, 0x0, 0x0, 0x30, 0xc000cf1600)
	/usr/local/go/src/runtime/asm_amd64.s:749 +0x43 fp=0xc000cf10d0 sp=0xc000cf1080 pc=0x508ae3
runtime.reflectcall(0x2414ea0?, 0xc0009208e8?, 0x8?, 0x24bc71f?, 0x0?, 0x12?, 0x2414ea0?)
	<autogenerated>:1 +0x36 fp=0xc000cf1110 sp=0xc000cf10d0 pc=0x50ced6
reflect.Value.call({0x23614e0?, 0xc0004d02b0?, 0x7f2e4ab306d8?}, {0x24af04c, 0x4}, {0xc00092c420, 0x2, 0x23618a0?})
	/usr/local/go/src/reflect/value.go:596 +0xce7 fp=0xc000cf1720 sp=0xc000cf1110 pc=0x55d5a7
reflect.Value.Call({0x23614e0?, 0xc0004d02b0?, 0xc00092c2a0?}, {0xc00092c420?, 0xc0004d02b0?, 0xc0003e73e0?})
	/usr/local/go/src/reflect/value.go:380 +0xb9 fp=0xc000cf1798 sp=0xc000cf1720 pc=0x55c679
github.com/NethermindEth/juno/jsonrpc.(*Server).handleRequest(0xc0003e7440, 0xc000918a80)
	/app/jsonrpc/server.go:291 +0x3ab fp=0xc000cf1918 sp=0xc000cf1798 pc=0xc8c1ab
github.com/NethermindEth/juno/jsonrpc.(*Server).HandleReader(0xc00029cad8?, {0x7f2e49d877a8?, 0xc000918a00?})
	/app/jsonrpc/server.go:174 +0x47a fp=0xc000cf1ac0 sp=0xc000cf1918 pc=0xc8b63a
github.com/NethermindEth/juno/jsonrpc.(*HTTP).ServeHTTP(0xc0003e7650, {0x265b8d0, 0xc000966000}, 0xc0008fb000)
	/app/jsonrpc/http.go:71 +0x1a5 fp=0xc000cf1b48 sp=0xc000cf1ac0 pc=0xc8a965
net/http.serverHandler.ServeHTTP({0x2658a88?}, {0x265b8d0?, 0xc000966000?}, 0x6?)
	/usr/local/go/src/net/http/server.go:2938 +0x8e fp=0xc000cf1b78 sp=0xc000cf1b48 pc=0x90332e
net/http.(*conn).serve(0xc000932000, {0x265db80, 0xc0004b8a80})
	/usr/local/go/src/net/http/server.go:2009 +0x5f4 fp=0xc000cf1fb8 sp=0xc000cf1b78 pc=0x8ff214
net/http.(*Server).Serve.func3()
	/usr/local/go/src/net/http/server.go:3086 +0x28 fp=0xc000cf1fe0 sp=0xc000cf1fb8 pc=0x903b48
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000cf1fe8 sp=0xc000cf1fe0 pc=0x50a441
created by net/http.(*Server).Serve in goroutine 56
	/usr/local/go/src/net/http/server.go:3086 +0x5cb
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Jul 20, 2023
@omerfirmak
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omerfirmak commented Jul 20, 2023 •
edited
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with go1.20.5 I get a different crash

fatal: morestack on g0
SIGTRAP: trace trap
PC=0x7f27a2 m=19 sigcode=128

goroutine 0 [idle]:
runtime.abort()
	/usr/lib/go/src/runtime/asm_amd64.s:1063 +0x2 fp=0x7ff1709acd08 sp=0x7ff1709acd00 pc=0x7f27a2
runtime.morestack()
	/usr/lib/go/src/runtime/asm_amd64.s:542 +0x25 fp=0x7ff1709acd10 sp=0x7ff1709acd08 pc=0x7f0805

goroutine 93 [running, locked to thread]:
runtime.systemstack_switch()
	/usr/lib/go/src/runtime/asm_amd64.s:463 fp=0xc000f541a8 sp=0xc000f541a0 pc=0x7f0720
runtime.goready(0x26c1220?, 0x2?)
	/usr/lib/go/src/runtime/proc.go:391 +0x47 fp=0xc000f541d8 sp=0xc000f541a8 pc=0x7be5e7
runtime.send(0xc0004e98c0?, 0xc000618240, 0x0?, 0xc000f54270?, 0x3)
	/usr/lib/go/src/runtime/chan.go:322 +0xf1 fp=0xc000f54208 sp=0xc000f541d8 pc=0x788f11
runtime.chansend(0xc0003081e0, 0xc000f542d0, 0x1, 0xc000f54310?)
	/usr/lib/go/src/runtime/chan.go:212 +0x5a5 fp=0xc000f54290 sp=0xc000f54208 pc=0x788d25
runtime.chansend1(0x30?, 0x30?)
	/usr/lib/go/src/runtime/chan.go:145 +0x1d fp=0xc000f542c0 sp=0xc000f54290 pc=0x78875d
github.com/cockroachdb/pebble.(*tableCacheShard).unrefValue(...)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/table_cache.go:608
github.com/cockroachdb/pebble.(*tableCacheShard).clearNode(0xc0002ca8f0?, 0x30?)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/table_cache.go:597 +0x8c fp=0xc000f542e8 sp=0xc000f542c0 pc=0xe3d1ac
github.com/cockroachdb/pebble.(*tableCacheShard).runHandCold(0xc0002ca8f0)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/table_cache.go:740 +0x4c fp=0xc000f54310 sp=0xc000f542e8 pc=0xe3da4c
github.com/cockroachdb/pebble.(*tableCacheShard).evictNodes(...)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/table_cache.go:727
github.com/cockroachdb/pebble.(*tableCacheShard).addNode(0xc0002ca8f0, 0xc001044540, 0xc000308728)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/table_cache.go:704 +0x2f fp=0xc000f54348 sp=0xc000f54310 pc=0xe3d84f
github.com/cockroachdb/pebble.(*tableCacheShard).findNode(0xc0002ca8f0, 0xc00037fb80, 0xc000308728)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/table_cache.go:643 +0x2ad fp=0xc000f543f0 sp=0xc000f54348 pc=0xe3d52d
github.com/cockroachdb/pebble.(*tableCacheShard).newIters(0xc0002ca8f0, 0xc00037fb80, 0xc000068a30, {0x0?, 0xc000067c80?, {0x0?, 0x0?}}, 0xc000308728)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/table_cache.go:365 +0xc5 fp=0xc000f54530 sp=0xc000f543f0 pc=0xe3bba5
github.com/cockroachdb/pebble.(*tableCacheContainer).newIters(0xc0009c6500?, 0x49?, 0x50?, {0x0?, 0xc000067c80?, {0x0?, 0x0?}})
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/table_cache.go:136 +0x5a fp=0xc000f54580 sp=0xc000f54530 pc=0xe3ad7a
github.com/cockroachdb/pebble.(*tableCacheContainer).newIters-fm(0xc0000689e0?, 0xc00037fb80?, {0x0?, 0xc000067c80?, {0x0?, 0x0?}})
	<autogenerated>:1 +0x5b fp=0xc000f545c8 sp=0xc000f54580 pc=0xe5185b
github.com/cockroachdb/pebble.(*levelIter).loadFile(0xc0000689e0, 0xc00037fb80, 0x1)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/level_iter.go:636 +0x27e fp=0xc000f54628 sp=0xc000f545c8 pc=0xe1fdfe
github.com/cockroachdb/pebble.(*levelIter).SeekGE(0xc0000689e0, {0xc0009c6500, 0x49, 0x50}, 0x0)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/level_iter.go:693 +0xa5 fp=0xc000f54660 sp=0xc000f54628 pc=0xe20185
github.com/cockroachdb/pebble.(*mergingIter).seekGE(0xc000067ea8, {0xc0009c6500?, 0x0?, 0x0?}, 0x0?, 0x0?)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/merging_iter.go:1046 +0x173 fp=0xc000f54758 sp=0xc000f54660 pc=0xe26b33
github.com/cockroachdb/pebble.(*mergingIter).SeekGE(0xc000067ea8, {0xc0009c6500?, 0x0?, 0x0?}, 0x20?)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/merging_iter.go:1108 +0x97 fp=0xc000f54798 sp=0xc000f54758 pc=0xe26fd7
github.com/cockroachdb/pebble.(*Iterator).SeekGEWithLimit(0xc000067900, {0xc0009c6500, 0x49, 0x50}, {0x0, 0x0, 0x0})
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/iterator.go:1251 +0x745 fp=0xc000f54848 sp=0xc000f54798 pc=0xe11985
github.com/cockroachdb/pebble.(*Iterator).SeekGE(...)
	/root/go/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230209222158-0568b5fd3d14/iterator.go:1135
github.com/NethermindEth/juno/db/pebble.(*iterator).Seek(0x9748fe2212b5198?, {0xc0009c6500?, 0xf4464e0d57369d04?, 0x46c8fcd34b67998e?})
	/app/db/pebble/iterator.go:54 +0x2d fp=0xc000f54890 sp=0xc000f54848 pc=0xf007ad
github.com/NethermindEth/juno/core.(*History).valueAt(0x1b747c6fb9d6dd44?, {0xc0009c6500, 0x41, 0x50}, 0x1792e)
	/app/core/history.go:40 +0xe3 fp=0xc000f54940 sp=0xc000f54890 pc=0xeec203
github.com/NethermindEth/juno/core.(*History).ContractStorageAt(0xef1368?, 0xc000d0e900?, 0xc00148aa60?, 0x1792e?)
	/app/core/history.go:87 +0x45 fp=0xc000f549a8 sp=0xc000f54940 pc=0xeec945
github.com/NethermindEth/juno/core.(*State).ContractStorageAt(0xc000f54a18?, 0x10987a7?, 0xc00148aaa0?, 0xc00148aac0?)
	<autogenerated>:1 +0x25 fp=0xc000f549d8 sp=0xc000f549a8 pc=0xef4625
github.com/NethermindEth/juno/core.(*stateSnapshot).ContractStorage(0xc000d0e918, 0x10980da?, 0x7ff16ea6c290?)
	/app/core/state_snapshot.go:56 +0x55 fp=0xc000f54a28 sp=0xc000f549d8 pc=0xef1275
github.com/NethermindEth/juno/vm.JunoStateGetStorageAt(0xc000f54a90?, 0x787166?, 0xc000283860?)
	/app/vm/state_reader.go:26 +0x65 fp=0xc000f54a78 sp=0xc000f54a28 pc=0x1098185
_cgoexp_bc4b0643f847_JunoStateGetStorageAt(0x7ff1709acd90)
	_cgo_gotypes.go:201 +0x2c fp=0xc000f54aa0 sp=0xc000f54a78 pc=0x109a1ec
runtime.cgocallbackg1(0x109a1c0, 0xc000f54c50?, 0x0)
	/usr/lib/go/src/runtime/cgocall.go:315 +0x2b1 fp=0xc000f54b68 sp=0xc000f54aa0 pc=0x787071
runtime.cgocallbackg(0xc000283860?, 0x300000002?, 0xc000283860?)
	/usr/lib/go/src/runtime/cgocall.go:234 +0x109 fp=0xc000f54bf8 sp=0xc000f54b68 pc=0x786d29
runtime.cgocallbackg(0x109a1c0, 0x7ff1709acd90, 0x0)
	<autogenerated>:1 +0x2f fp=0xc000f54c20 sp=0xc000f54bf8 pc=0x7f510f
runtime.cgocallback(0x786ba5, 0x11497d0, 0xc0016b4cb0)
	/usr/lib/go/src/runtime/asm_amd64.s:998 +0xb4 fp=0xc000f54c48 sp=0xc000f54c20 pc=0x7f2714
runtime.systemstack_switch()
	/usr/lib/go/src/runtime/asm_amd64.s:463 fp=0xc000f54c50 sp=0xc000f54c48 pc=0x7f0720
runtime.cgocall(0x11497d0, 0xc000f54cb0)
	/usr/lib/go/src/runtime/cgocall.go:167 +0x85 fp=0xc000f54c88 sp=0xc000f54c50 pc=0x786ba5
github.com/NethermindEth/juno/vm._Cfunc_cairoVMExecute(0x7ff1986de550, 0x7ff1986dc400, 0x1, 0x1792e, 0x64a2abb9, 0x7ff1986dc410, 0xc00143ecc0)
	_cgo_gotypes.go:159 +0x45 fp=0xc000f54cb0 sp=0xc000f54c88 pc=0x1096f85
github.com/NethermindEth/juno/vm.Execute({0xc000bb2b50, 0x1, 0x1}, {0x0, 0x0, 0x0}, 0x2?, 0x0?, 0xc00143e880, {0x299e468, ...}, ...)
	/app/vm/vm.go:138 +0x31b fp=0xc000f54e40 sp=0xc000f54cb0 pc=0x109975b
github.com/NethermindEth/juno/rpc.(*Handler).EstimateFee(0xc000308cc0, {0xc000168d80, 0x1, 0x7?}, {0x0, 0x0, 0xc00143e660, 0x0})
	/app/rpc/handlers.go:1106 +0x5ae fp=0xc000f54fe0 sp=0xc000f54e40 pc=0x10a132e
github.com/NethermindEth/juno/rpc.(*Handler).EstimateFee-fm({0xc000168d80?, 0x0?, 0xc000fe6540?}, {0x4?, 0x0?, 0xc00143e660?, 0xc000c4aaa0?})
	<autogenerated>:1 +0x53 fp=0xc000f55028 sp=0xc000f54fe0 pc=0x10c9a93
runtime.call64(0xc0014ea1e0, 0xc0007ca2d0, 0x0, 0x0, 0x0, 0x30, 0xc000f55588)
	/usr/lib/go/src/runtime/asm_amd64.s:730 +0x49 fp=0xc000f55078 sp=0xc000f55028 pc=0x7f0da9
runtime.reflectcall(0x2757640?, 0xc000d0e840?, 0x8?, 0x27fe939?, 0x0?, 0x12?, 0x2757640?)
	<autogenerated>:1 +0x3c fp=0xc000f550b8 sp=0xc000f55078 pc=0x7f557c
reflect.Value.call({0x26a4d40?, 0xc0007ca2d0?, 0x7ff170a64d78?}, {0x27f0556, 0x4}, {0xc000277a40, 0x2, 0xc000349bc0?})
	/usr/lib/go/src/reflect/value.go:586 +0xb0b fp=0xc000f556a8 sp=0xc000f550b8 pc=0x847beb
reflect.Value.Call({0x26a4d40?, 0xc0007ca2d0?, 0xc000277770?}, {0xc000277a40?, 0xc0007ca2d0?, 0xc000349b60?})
	/usr/lib/go/src/reflect/value.go:370 +0xbc fp=0xc000f55720 sp=0xc000f556a8 pc=0x846e9c
github.com/NethermindEth/juno/jsonrpc.(*Server).handleRequest(0xc000349bc0, 0xc001420200)
	/app/jsonrpc/server.go:291 +0x3e5 fp=0xc000f558a0 sp=0xc000f55720 pc=0xfc4005
github.com/NethermindEth/juno/jsonrpc.(*Server).HandleReader(0x0?, {0x7ff1706a18d8?, 0xc001420180?})
	/app/jsonrpc/server.go:174 +0x4a5 fp=0xc000f55a48 sp=0xc000f558a0 pc=0xfc33c5
github.com/NethermindEth/juno/jsonrpc.(*HTTP).ServeHTTP(0xc000349da0, {0x299d6f0, 0xc00056e1c0}, 0xc0002e2200)
	/app/jsonrpc/http.go:71 +0x1ba fp=0xc000f55ad0 sp=0xc000f55a48 pc=0xfc265a
net/http.serverHandler.ServeHTTP({0x299a200?}, {0x299d6f0, 0xc00056e1c0}, 0xc0002e2200)
	/usr/lib/go/src/net/http/server.go:2936 +0x316 fp=0xc000f55b80 sp=0xc000f55ad0 pc=0xc1f176
net/http.(*conn).serve(0xc000bb4090, {0x299e2e0, 0xc0003e0510})
	/usr/lib/go/src/net/http/server.go:1995 +0x612 fp=0xc000f55fb8 sp=0xc000f55b80 pc=0xc1ab52
net/http.(*Server).Serve.func3()
	/usr/lib/go/src/net/http/server.go:3089 +0x2e fp=0xc000f55fe0 sp=0xc000f55fb8 pc=0xc1face
runtime.goexit()
	/usr/lib/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000f55fe8 sp=0xc000f55fe0 pc=0x7f2941
created by net/http.(*Server).Serve
	/usr/lib/go/src/net/http/server.go:3089 +0x5ed

@bcmills
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bcmills commented Jul 20, 2023

signal arrived during cgo execution usually means that either there is a bug in the C library or the Go program passed invalid arguments to it. (That is: absent evidence to the contrary, it's much more likely a bug in the program rather than a bug in the Go runtime.)

morestack on g0 can be a symptom of memory corruption: perhaps a memory-lifetime bug in the C code, or a violation of the cgo pointer-passing rules.

I would suggest:

  • Use runtime.SetCgoTraceback to configure a traceback hook compatible with your C dependencies, such as github.com/ianlancetaylor/cgosymbolizer.
  • Test the program with GODEBUG=cgocheck=2 (per https://pkg.go.dev/cmd/cgo#hdr-Passing_pointers).
  • Test the C dependencies (and the program overall) with the Go race detector (go build -race / go test -race), and with all of the C sanitizers you can find (-fsanitize=address, -fsanitize=thread, -fsanitize=undefined, and so on).
  • Test the program built with the Go -msan flag and the C -fsanitize=memory flag together.
  • Verify that all signal handlers registered by the C dependencies preserve (or set) the SA_ONSTACK flag.

@bcmills bcmills added the WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided. label Jul 20, 2023
@omerfirmak
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omerfirmak commented Jul 20, 2023 •
edited
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Thank you for the quick response!

signal arrived during cgo execution usually means that either there is a bug in the C library or the Go program passed invalid arguments to it.

But the execution never makes it go the C symbol (implementation is in Rust on our case). Top most frame is runtime.cgocall().

and this only happens on alpine/musl, so I suspected the root cause to be somewhere in the runtime

@bcmills
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bcmills commented Jul 20, 2023

Top most frame is runtime.cgocall().

If you aren't using runtime.SetCgoTraceback, the topmost frame printed by the runtime is the topmost Go frame that the runtime knows about. There may be C frames on top of it that are not being printed.

@omerfirmak
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It was a stackoverflow, switched away from using musl. Thanks @bcmills

@golang golang locked and limited conversation to collaborators Jul 20, 2024
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