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syscall: incorrect length of abstract Unix domain socket paths beginning with null character #63579

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1f604 opened this issue Oct 16, 2023 · 3 comments
Open

syscall: incorrect length of abstract Unix domain socket paths beginning with null character #63579

1f604 opened this issue Oct 16, 2023 · 3 comments
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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Backlog

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@1f604
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1f604 commented Oct 16, 2023 •
edited

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

$ go version
go version go1.21.3 linux/amd64

Does this issue reproduce with the latest release?

Yes

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

go env Output
$ go env
GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/home/x/.cache/go-build'
GOENV='/home/x/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/home/x/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/home/x/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='go1.21.3'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
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 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build3291950043=/tmp/go-build -gno-record-gcc-switches'

What did you do?

https://go.dev/play/p/QzrhBGKYhJc

What did you expect to see?

Num       RefCount Protocol Flags    Type St Inode Path
0000000000000000: 00000001 00000000 00010000 0001 01        1 @begins-with-null-1
0000000000000000: 00000001 00000000 00010000 0001 01        2 @begins-with-at-1
0000000000000000: 00000001 00000000 00010000 0001 01        3 @begins-with-null-2
0000000000000000: 00000001 00000000 00010000 0001 01        4 @begins-with-at-2

What did you see instead?

Num       RefCount Protocol Flags    Type St Inode Path
0000000000000000: 00000001 00000000 00010000 0001 01        1 @begins-with-null-1\x0
0000000000000000: 00000001 00000000 00010000 0001 01        2 @begins-with-at-1
0000000000000000: 00000001 00000000 00010000 0001 01        3 @begins-with-null-2\x0
0000000000000000: 00000001 00000000 00010000 0001 01        4 @begins-with-at-2

In the syscall file there is code that special-cases handling of unix socket names beginning with @ by removing the trailing NUL character but it does not do the same for unix socket names starting with the NUL character.

It seems obvious to me that this is just a simple oversight and the fix is very simple. Lemme just make a PR...
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Oct 16, 2023
@1f604 1f604 mentioned this issue Oct 16, 2023
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@gopherbot
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Change https://go.dev/cl/535776 mentions this issue: syscall: stop counting trailing NUL for abstract addresses starting with NUL

@gopherbot
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Change https://go.dev/cl/535955 mentions this issue: syscall: stop counting trailing NUL for abstract addresses starting with NUL

@cagedmantis cagedmantis added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Oct 20, 2023
@cagedmantis cagedmantis added this to the Backlog milestone Oct 20, 2023
@cagedmantis
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cc @golang/runtime

gopherbot pushed a commit that referenced this issue Oct 20, 2023
@gopherbot
syscall: stop counting trailing NUL for abstract addresses starting w…
3de6033 
…ith NUL

Changes trailing-NUL-counting behavior for abstract addresses
starting with the NUL character to be the same as abstract
addresses starting with the @ character.

For #63579.

Change-Id: I206e4d0d808396998cb7d92a9e26dda854cb1248
GitHub-Last-Rev: 0ff0a9c
GitHub-Pull-Request: #63580
Reviewed-on: https://go-review.googlesource.com/c/go/+/535776
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
gopherbot pushed a commit to golang/sys that referenced this issue Oct 23, 2023
@gopherbot
unix: stop counting trailing NUL for abstract addresses starting with…
1e63810 
… NUL

Changes trailing-NUL-counting behavior for abstract addresses
starting with the NUL character to be the same as abstract
addresses starting with the @ character.

For golang/go#63579.

Change-Id: I2f26de4bcf614c4635ad188b1afa3d14ebd9a95f
Reviewed-on: https://go-review.googlesource.com/c/sys/+/535955
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
@dyhkwong dyhkwong mentioned this issue Dec 25, 2023
Closed
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Labels
compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Projects
Go Compiler / Runtime
Status: In Progress
Milestone
Backlog
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@cagedmantis @gopherbot @1f604