patch_parse: fix segfault due to line containing static contents - #5179
Merged
Conversation
With commit dedf70a (patch_parse: do not depend on parsed buffer's lifetime, 2019-07-05), all lines of the patch are allocated with `strdup` to make lifetime of the parsed patch independent of the buffer that is currently being parsed. In patch b089328 (patch_parse: ensure valid patch output with EOFNL, 2019-07-11), we introduced another code location where we add lines to the parsed patch. But as that one was implemented via a separate pull request, it wasn't converted to use `strdup`, as well. As a consequence, we generate a segfault when trying to deallocate the potentially static buffer that's now in some of the lines. Use `git__strdup` to fix the issue.
Member
|
Oops, nice catch. |
Member
Author
|
Yeah. Unfortunately this breaks all current test runs, so I'd like to get this in as quick as possible |
ethomson
approved these changes
Jul 20, 2019
Member
Indeed. I'm going to go ahead and merge it. |
Member
Author
|
Thanks a lot for the fast lane! :) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
With commit dedf70a (patch_parse: do not depend on parsed buffer's
lifetime, 2019-07-05), all lines of the patch are allocated with
strdupto make lifetime of the parsed patch independent of the bufferthat is currently being parsed. In patch b089328 (patch_parse: ensure
valid patch output with EOFNL, 2019-07-11), we introduced another
code location where we add lines to the parsed patch. But as that one
was implemented via a separate pull request, it wasn't converted to use
strdup, as well. As a consequence, we generate a segfault when tryingto deallocate the potentially static buffer that's now in some of the
lines.
Use
git__strdupto fix the issue.This bug has been introduced due to #5158 and #5159 having bad interactions with each other.