Prevent dangling GetAttribute calls (#18754) (#18755)

* Prevent dangling GetAttribute calls

It appears possible that there could be a hang due to unread data from the
repo-attribute command pipes. This PR simply closes these during the defer.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* move close into the defer

Signed-off-by: Andrew Thornton <art27@cantab.net>

* lets try again

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2022-02-14 20:27:55 +00:00 committed by GitHub
parent 2e36ba0a00
commit 7ebc3da7cb
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 25 additions and 17 deletions

View file

@ -87,7 +87,7 @@ func (repo *Repository) CheckAttribute(opts CheckAttributeOpts) (map[string]map[
return nil, fmt.Errorf("wrong number of fields in return from check-attr")
}
var name2attribute2info = make(map[string]map[string]string)
name2attribute2info := make(map[string]map[string]string)
for i := 0; i < (len(fields) / 3); i++ {
filename := string(fields[3*i])
@ -179,17 +179,21 @@ func (c *CheckAttributeReader) Init(ctx context.Context) error {
// Run run cmd
func (c *CheckAttributeReader) Run() error {
defer func() {
_ = c.Close()
_ = c.stdinReader.Close()
_ = c.stdOut.Close()
}()
stdErr := new(bytes.Buffer)
err := c.cmd.RunInDirTimeoutEnvFullPipelineFunc(c.env, -1, c.Repo.Path, c.stdOut, stdErr, c.stdinReader, func(_ context.Context, _ context.CancelFunc) error {
close(c.running)
select {
case <-c.running:
default:
close(c.running)
}
return nil
})
if err != nil && c.ctx.Err() != nil && err.Error() != "signal: killed" {
return fmt.Errorf("failed to run attr-check. Error: %w\nStderr: %s", err, stdErr.String())
}
return nil
}
@ -229,10 +233,8 @@ func (c *CheckAttributeReader) CheckPath(path string) (rs map[string]string, err
// Close close pip after use
func (c *CheckAttributeReader) Close() error {
err := c.stdinWriter.Close()
_ = c.stdinReader.Close()
_ = c.stdOut.Close()
c.cancel()
err := c.stdinWriter.Close()
select {
case <-c.running:
default:

View file

@ -88,7 +88,10 @@ func (repo *Repository) GetLanguageStats(commitID string) (map[string]int64, err
}
}()
}
defer cancel()
defer func() {
_ = checker.Close()
cancel()
}()
}
}

View file

@ -190,9 +190,11 @@ var (
codeTagSuffix = []byte(`</span>`)
)
var unfinishedtagRegex = regexp.MustCompile(`<[^>]*$`)
var trailingSpanRegex = regexp.MustCompile(`<span\s*[[:alpha:]="]*?[>]?$`)
var entityRegex = regexp.MustCompile(`&[#]*?[0-9[:alpha:]]*$`)
var (
unfinishedtagRegex = regexp.MustCompile(`<[^>]*$`)
trailingSpanRegex = regexp.MustCompile(`<span\s*[[:alpha:]="]*?[>]?$`)
entityRegex = regexp.MustCompile(`&[#]*?[0-9[:alpha:]]*$`)
)
// shouldWriteInline represents combinations where we manually write inline changes
func shouldWriteInline(diff diffmatchpatch.Diff, lineType DiffLineType) bool {
@ -206,7 +208,6 @@ func shouldWriteInline(diff diffmatchpatch.Diff, lineType DiffLineType) bool {
}
func fixupBrokenSpans(diffs []diffmatchpatch.Diff) []diffmatchpatch.Diff {
// Create a new array to store our fixed up blocks
fixedup := make([]diffmatchpatch.Diff, 0, len(diffs))
@ -658,10 +659,10 @@ func (diffFile *DiffFile) GetTailSection(gitRepo *git.Repository, leftCommitID,
LastRightIdx: lastLine.RightIdx,
LeftIdx: leftLineCount,
RightIdx: rightLineCount,
}}
},
}
tailSection := &DiffSection{FileName: diffFile.Name, Lines: []*DiffLine{tailDiffLine}}
return tailSection
}
func getCommitFileLineCount(commit *git.Commit, filePath string) int {
@ -942,8 +943,8 @@ parsingLoop:
// TODO: There are numerous issues with this:
// - we might want to consider detecting encoding while parsing but...
// - we're likely to fail to get the correct encoding here anyway as we won't have enough information
var diffLineTypeBuffers = make(map[DiffLineType]*bytes.Buffer, 3)
var diffLineTypeDecoders = make(map[DiffLineType]*encoding.Decoder, 3)
diffLineTypeBuffers := make(map[DiffLineType]*bytes.Buffer, 3)
diffLineTypeDecoders := make(map[DiffLineType]*encoding.Decoder, 3)
diffLineTypeBuffers[DiffLinePlain] = new(bytes.Buffer)
diffLineTypeBuffers[DiffLineAdd] = new(bytes.Buffer)
diffLineTypeBuffers[DiffLineDel] = new(bytes.Buffer)
@ -1420,6 +1421,7 @@ func GetDiff(gitRepo *git.Repository, opts *DiffOptions, files ...string) (*Diff
}()
}
defer func() {
_ = checker.Close()
cancel()
}()
}
@ -1539,7 +1541,8 @@ func GetWhitespaceFlag(whiteSpaceBehavior string) string {
"ignore-all": "-w",
"ignore-change": "-b",
"ignore-eol": "--ignore-space-at-eol",
"": ""}
"": "",
}
return whitespaceFlags[whiteSpaceBehavior]
}