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debug/elf: slice bounds out of range in Symbols #62649

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catenacyber opened this issue Sep 14, 2023 · 3 comments
Closed

debug/elf: slice bounds out of range in Symbols #62649

catenacyber opened this issue Sep 14, 2023 · 3 comments
Labels
compiler/runtime Issues related to the Go compiler and/or runtime. NeedsFix The path to resolution is known, but the work has not been done.
Milestone
Go1.22

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

$ go version
go version go1.21 linux/amd64

Does this issue reproduce with the latest release?

Happens only on dev branch, not in go 1.21

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="/root/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/root/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/root/.go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/root/.go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.21"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/src/ngolo-fuzzing/go.mod"
GOWORK=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2481516251=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Run https://go.dev/play/p/04LXQx1Lhwh?v=gotip

What did you expect to see?

The program finishing and printing Hello, without panicking

What did you see instead?

panic: runtime error: slice bounds out of range [16:0]

goroutine 1 [running]:
debug/elf.(*File).getSymbols32(0xc0000b8000, 0xb6000?)
	/usr/local/go-faketime/src/debug/elf/file.go:641 +0x594
debug/elf.(*File).getSymbols(0x4e0498?, 0x920f0?)
	/usr/local/go-faketime/src/debug/elf/file.go:611 +0x6d
debug/elf.(*File).Symbols(...)
	/usr/local/go-faketime/src/debug/elf/file.go:1427
main.main()
	/tmp/sandbox3244032495/prog.go:13 +0x110

Program exited.

Found by https://github.com/catenacyber/ngolo-fuzzing with oss-fuzz :
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=62353
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Sep 14, 2023
@ianlancetaylor
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Introduced by https://go.dev/cl/512395. Working on a patch.

@gopherbot
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Change https://go.dev/cl/528655 mentions this issue: debug/elf: don't crash on empty symbol section

@heschi
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heschi commented Sep 15, 2023

cc @golang/compiler

@heschi heschi added the NeedsFix The path to resolution is known, but the work has not been done. label Sep 15, 2023
@heschi heschi added this to the Go1.22 milestone Sep 15, 2023
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsFix The path to resolution is known, but the work has not been done.
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Go1.22
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@ianlancetaylor @gopherbot @heschi @catenacyber