go build use -asan it panic. #69225
Description
Go version
go version go1.21.0 linux/amd64 (master branch also influence)
Output of go env in your module/workspace:
GO111MODULE='auto'
GOARCH='amd64'
GOBIN=''
GOCACHE='/home/{username}/.cache/go-build'
GOENV='/home/{username}/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/home/{username}/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/home/{username}/go'
GOPRIVATE=''
GOPROXY='http://goproxy.cn'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.21.0'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/home/10346053@zte.intra/codetest/gotest/test/go.mod'
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 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build139988242=/tmp/go-build -gno-record-gcc-switches'What did you do?
I test like this
package main
import "unsafe"
type Person struct {
Name string
Age int
}
func main() {
peopleSlice := []Person{
{Name: "Charlie", Age: 35},
{Name: "Diana", Age: 40},
}
addr := unsafe.Pointer(&peopleSlice)
ptr := uintptr(addr)
b := (*[0x7FFFFFF]Person)(unsafe.Pointer(ptr))[:]
println(b)
}
go build -asan
run the binary file , I meet this panic
fatal error: checkptr: pointer arithmetic result points to invalid allocation
goroutine 1 [running]:
runtime.throw({0x470e47?, 0x18?})
/usr/lib/golang/src/runtime/panic.go:1047 +0x5d fp=0x10c00004e708 sp=0x10c00004e6d8 pc=0x42f09d
runtime.checkptrArithmetic(0x406cf9?, {0x0, 0x0, 0x0?})
/usr/lib/golang/src/runtime/checkptr.go:69 +0xaa fp=0x10c00004e738 sp=0x10c00004e708 pc=0x40794a
main.main()
/root/code/test.go:75 +0x153 fp=0x10c00004e780 sp=0x10c00004e738 pc=0x45b1f3
runtime.main()
/usr/lib/golang/src/runtime/proc.go:250 +0x207 fp=0x10c00004e7e0 sp=0x10c00004e780 pc=0x4319c7
runtime.goexit()
/usr/lib/golang/src/runtime/asm_amd64.s:1598 +0x1 fp=0x10c00004e7e8 sp=0x10c00004e7e0 pc=0x458041
goroutine 2 [force gc (idle)]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
/usr/lib/golang/src/runtime/proc.go:381 +0xd6 fp=0x10c00004efb0 sp=0x10c00004ef90 pc=0x431df6
runtime.goparkunlock(...)
/usr/lib/golang/src/runtime/proc.go:387
runtime.forcegchelper()
/usr/lib/golang/src/runtime/proc.go:305 +0xb0 fp=0x10c00004efe0 sp=0x10c00004efb0 pc=0x431c30
runtime.goexit()
/usr/lib/golang/src/runtime/asm_amd64.s:1598 +0x1 fp=0x10c00004efe8 sp=0x10c00004efe0 pc=0x458041
created by runtime.init.6
/usr/lib/golang/src/runtime/proc.go:293 +0x25
goroutine 3 [GC sweep wait]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
/usr/lib/golang/src/runtime/proc.go:381 +0xd6 fp=0x10c00004f780 sp=0x10c00004f760 pc=0x431df6
runtime.goparkunlock(...)
/usr/lib/golang/src/runtime/proc.go:387
runtime.bgsweep(0x0?)
/usr/lib/golang/src/runtime/mgcsweep.go:278 +0x8e fp=0x10c00004f7c8 sp=0x10c00004f780 pc=0x41f42e
runtime.gcenable.func1()
/usr/lib/golang/src/runtime/mgc.go:178 +0x26 fp=0x10c00004f7e0 sp=0x10c00004f7c8 pc=0x4148e6
runtime.goexit()
/usr/lib/golang/src/runtime/asm_amd64.s:1598 +0x1 fp=0x10c00004f7e8 sp=0x10c00004f7e0 pc=0x458041
created by runtime.gcenable
/usr/lib/golang/src/runtime/mgc.go:178 +0x6b
goroutine 4 [GC scavenge wait]:
runtime.gopark(0x10c000074000?, 0x481120?, 0x1?, 0x0?, 0x0?)
/usr/lib/golang/src/runtime/proc.go:381 +0xd6 fp=0x10c00004ff70 sp=0x10c00004ff50 pc=0x431df6
runtime.goparkunlock(...)
/usr/lib/golang/src/runtime/proc.go:387
runtime.(*scavengerState).park(0x4cbde0)
/usr/lib/golang/src/runtime/mgcscavenge.go:400 +0x53 fp=0x10c00004ffa0 sp=0x10c00004ff70 pc=0x41d353
runtime.bgscavenge(0x0?)
/usr/lib/golang/src/runtime/mgcscavenge.go:628 +0x45 fp=0x10c00004ffc8 sp=0x10c00004ffa0 pc=0x41d925
runtime.gcenable.func2()
/usr/lib/golang/src/runtime/mgc.go:179 +0x26 fp=0x10c00004ffe0 sp=0x10c00004ffc8 pc=0x414886
runtime.goexit()
/usr/lib/golang/src/runtime/asm_amd64.s:1598 +0x1 fp=0x10c00004ffe8 sp=0x10c00004ffe0 pc=0x458041
created by runtime.gcenable
/usr/lib/golang/src/runtime/mgc.go:179 +0xaa
What did you see happen?
It panic.
What did you expect to see?
I want to know why cause this promblem. and how to resolve.