git/list[1] front-page[2] threads[3] people[4] search[5] about
 

[PATCH v2 05/20] builtin/merge-tree: fix leaking `-X` strategy options

From
Patrick Steinhardt <ps@pks.im>
Date
Aug 22, 2024, 09:17 UTC
Message-ID
<c62c5e9604e05ae7d65926b90832ba9aff84044a.1724315484.git.ps@pks.im>
In-Reply-To
<cover.1724315484.git.ps@pks.im>

The `-X` switch for git-merge-tree(1) will push each option into a local `xopts` vector that we then end up parsing. The vector never gets freed though, causing a memory leak. Plug it.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
 builtin/merge-tree.c             | 13 ++++++++++---
 t/t4301-merge-tree-write-tree.sh |  1 +
 2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
index 9bca9b5f33c..c00469ed3db 100644
--- a/builtin/merge-tree.c
+++ b/builtin/merge-tree.c
@@ -533,6 +533,7 @@ int cmd_merge_tree(int argc, const char **argv, const char *prefix)
 	int expected_remaining_argc;
 	int original_argc;
 	const char *merge_base = NULL;
+	int ret;
 
 	const char * const merge_tree_usage[] = {
 		N_("git merge-tree [--write-tree] [<options>] <branch1> <branch2>"),
@@ -625,7 +626,9 @@ int cmd_merge_tree(int argc, const char **argv, const char *prefix)
 			strbuf_list_free(split);
 		}
 		strbuf_release(&buf);
-		return 0;
+
+		ret = 0;
+		goto out;
 	}
 
 	/* Figure out which mode to use */
@@ -664,7 +667,11 @@ int cmd_merge_tree(int argc, const char **argv, const char *prefix)
 
 	/* Do the relevant type of merge */
 	if (o.mode == MODE_REAL)
-		return real_merge(&o, merge_base, argv[0], argv[1], prefix);
+		ret = real_merge(&o, merge_base, argv[0], argv[1], prefix);
 	else
-		return trivial_merge(argv[0], argv[1], argv[2]);
+		ret = trivial_merge(argv[0], argv[1], argv[2]);
+
+out:
+	strvec_clear(&xopts);
+	return ret;
 }
diff --git a/t/t4301-merge-tree-write-tree.sh b/t/t4301-merge-tree-write-tree.sh
index eea19907b55..37f1cd7364c 100755
--- a/t/t4301-merge-tree-write-tree.sh
+++ b/t/t4301-merge-tree-write-tree.sh
@@ -2,6 +2,7 @@
 
 test_description='git merge-tree --write-tree'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 # This test is ort-specific
-- 
2.46.0.164.g477ce5ccd6.dirty
Previous: Patrick SteinhardtNext: Patrick Steinhardt
Message 43 of 60 in “Memory leak fixes (pt.5)”
  1. 00/20 Memory leak fixes (pt.5)Patrick Steinhardt, Aug 20, 2024
  2. 01/20 mailinfo: fix leaking header dataPatrick Steinhardt, Aug 20, 2024
  3. Junio C HamanoAug 20, 2024
  4. 02/20 convert: fix leaks when resetting attributesPatrick Steinhardt, Aug 20, 2024
  5. Junio C HamanoAug 20, 2024
  6. 03/20 pretty: fix memory leaks when parsing pretty formatsPatrick Steinhardt, Aug 20, 2024
  7. Junio C HamanoAug 20, 2024
  8. Patrick SteinhardtAug 22, 2024
  9. 04/20 pretty: fix leaking key/value separator bufferPatrick Steinhardt, Aug 20, 2024
  10. 05/20 builtin/merge-tree: fix leaking `-X` strategy optionsPatrick Steinhardt, Aug 20, 2024
  11. Junio C HamanoAug 20, 2024
  12. 06/20 builtin/upload-archive: fix leaking args passed to `write_archive()`Patrick Steinhardt, Aug 20, 2024
  13. 07/20 builtin/archive: fix leaking `OPT_FILENAME()` valuePatrick Steinhardt, Aug 20, 2024
  14. 08/20 midx-write: fix leaking hashfile on error casesPatrick Steinhardt, Aug 20, 2024
  15. Junio C HamanoAug 20, 2024
  16. Patrick SteinhardtAug 22, 2024
  17. 09/20 builtin/repack: fix leaks when computing packs to repackPatrick Steinhardt, Aug 20, 2024
  18. 10/20 t/helper: fix leaking multi-pack-indices in "read-midx"Patrick Steinhardt, Aug 20, 2024
  19. 11/20 transport: fix leaking OID arrays in git:// transport dataPatrick Steinhardt, Aug 20, 2024
  20. 12/20 builtin/send-pack: fix leaking refspecsPatrick Steinhardt, Aug 20, 2024
  21. 13/20 sideband: fix leaks when configuring sideband colorsPatrick Steinhardt, Aug 20, 2024
  22. Junio C HamanoAug 20, 2024
  23. Patrick SteinhardtAug 22, 2024
  24. 14/20 builtin/fetch-pack: fix leaking refsPatrick Steinhardt, Aug 20, 2024
  25. Junio C HamanoAug 21, 2024
  26. 15/20 remote: fix leaking config stringsPatrick Steinhardt, Aug 20, 2024
  27. Junio C HamanoAug 21, 2024
  28. Patrick SteinhardtAug 22, 2024
  29. Junio C HamanoAug 22, 2024
  30. 16/20 remote: fix leaks when matching refspecsPatrick Steinhardt, Aug 20, 2024
  31. 17/20 remote: fix leaking peer ref when expanding refmapPatrick Steinhardt, Aug 20, 2024
  32. 18/20 builtin/fetch: fix leaking transaction with `--atomic`Patrick Steinhardt, Aug 20, 2024
  33. 19/20 transport: fix leaking arguments when fetching from bundlePatrick Steinhardt, Aug 20, 2024
  34. Junio C HamanoAug 21, 2024
  35. Patrick SteinhardtAug 22, 2024
  36. Junio C HamanoAug 22, 2024
  37. 20/20 transport: fix leaking negotiation tipsPatrick Steinhardt, Aug 20, 2024
  38. 00/20 Memory leak fixes (pt.5)Patrick Steinhardt, Aug 22, 2024
  39. 01/20 mailinfo: fix leaking header dataPatrick Steinhardt, Aug 22, 2024
  40. 02/20 convert: fix leaks when resetting attributesPatrick Steinhardt, Aug 22, 2024
  41. 03/20 pretty: fix memory leaks when parsing pretty formatsPatrick Steinhardt, Aug 22, 2024
  42. 04/20 pretty: fix leaking key/value separator bufferPatrick Steinhardt, Aug 22, 2024
  43. 05/20 builtin/merge-tree: fix leaking `-X` strategy optionsPatrick Steinhardt, Aug 22, 2024
  44. 06/20 builtin/upload-archive: fix leaking args passed to `write_archive()`Patrick Steinhardt, Aug 22, 2024
  45. 07/20 builtin/archive: fix leaking `OPT_FILENAME()` valuePatrick Steinhardt, Aug 22, 2024
  46. 08/20 midx-write: fix leaking hashfile on error casesPatrick Steinhardt, Aug 22, 2024
  47. 09/20 builtin/repack: fix leaks when computing packs to repackPatrick Steinhardt, Aug 22, 2024
  48. 10/20 t/helper: fix leaking multi-pack-indices in "read-midx"Patrick Steinhardt, Aug 22, 2024
  49. 11/20 transport: fix leaking OID arrays in git:// transport dataPatrick Steinhardt, Aug 22, 2024
  50. 12/20 builtin/send-pack: fix leaking refspecsPatrick Steinhardt, Aug 22, 2024
  51. 13/20 sideband: fix leaks when configuring sideband colorsPatrick Steinhardt, Aug 22, 2024
  52. 14/20 builtin/fetch-pack: fix leaking refsPatrick Steinhardt, Aug 22, 2024
  53. 15/20 remote: fix leaking config stringsPatrick Steinhardt, Aug 22, 2024
  54. 16/20 remote: fix leaks when matching refspecsPatrick Steinhardt, Aug 22, 2024
  55. 17/20 remote: fix leaking peer ref when expanding refmapPatrick Steinhardt, Aug 22, 2024
  56. 18/20 builtin/fetch: fix leaking transaction with `--atomic`Patrick Steinhardt, Aug 22, 2024
  57. 19/20 transport: fix leaking arguments when fetching from bundlePatrick Steinhardt, Aug 22, 2024
  58. Junio C HamanoAug 22, 2024
  59. 20/20 transport: fix leaking negotiation tipsPatrick Steinhardt, Aug 22, 2024
  60. Junio C HamanoAug 22, 2024

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.