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[PATCH 29/29] builtin/blame: fix leaking ignore revs files

From
Patrick Steinhardt <ps@pks.im>
Date
Jun 3, 2024, 09:48 UTC
Message-ID
<5b5fdfc6cb8262d1d975de41d0643fd69078bbfa.1717402439.git.ps@pks.im>
In-Reply-To
<cover.1717402439.git.ps@pks.im>

When parsing the blame configuration we add "blame.ignoreRevsFile" configs to a string list. This string list is declared as with `NODUP`, and thus we hand over the allocated string to that list. We eventually end up calling `string_list_clear()` on that list, but due to it being declared as `NODUP` we will not release the associated strings and thus leak memory.

Fix this issue by setting up the list as `DUP` instead and free the config string after insertion.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
 builtin/blame.c              | 3 ++-
 t/t8013-blame-ignore-revs.sh | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/builtin/blame.c b/builtin/blame.c
index 17694410ed..702fe4fb94 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -67,7 +67,7 @@ static int no_whole_file_rename;
 static int show_progress;
 static char repeated_meta_color[COLOR_MAXLEN];
 static int coloring_mode;
-static struct string_list ignore_revs_file_list = STRING_LIST_INIT_NODUP;
+static struct string_list ignore_revs_file_list = STRING_LIST_INIT_DUP;
 static int mark_unblamable_lines;
 static int mark_ignored_lines;
 
@@ -725,6 +725,7 @@ static int git_blame_config(const char *var, const char *value,
 		if (ret)
 			return ret;
 		string_list_insert(&ignore_revs_file_list, str);
+		free(str);
 		return 0;
 	}
 	if (!strcmp(var, "blame.markunblamablelines")) {
diff --git a/t/t8013-blame-ignore-revs.sh b/t/t8013-blame-ignore-revs.sh
index dbfbd86e83..d33788d867 100755
--- a/t/t8013-blame-ignore-revs.sh
+++ b/t/t8013-blame-ignore-revs.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='ignore revisions when blaming'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 # Creates:
-- 
2.45.1.410.g58bac47f8e.dirty
Previous: Patrick SteinhardtNext: Karthik Nayak
Message 40 of 74 in “Memory leak fixes (pt.2)”
  1. 00/29 Memory leak fixes (pt.2)Patrick Steinhardt, Jun 3, 2024
  2. 01/29 revision: fix memory leak when reversing revisionsPatrick Steinhardt, Jun 3, 2024
  3. 02/29 parse-options: fix leaks for users of OPT_FILENAMEPatrick Steinhardt, Jun 3, 2024
  4. Karthik NayakJun 6, 2024
  5. 03/29 notes-utils: free note trees when releasing copied notesPatrick Steinhardt, Jun 3, 2024
  6. Karthik NayakJun 6, 2024
  7. 04/29 bundle: plug leaks in `create_bundle()`Patrick Steinhardt, Jun 3, 2024
  8. 05/29 biultin/rev-parse: fix memory leaks in `--parseopt` modePatrick Steinhardt, Jun 3, 2024
  9. 06/29 merge-recursive: fix leaging rename conflict infoPatrick Steinhardt, Jun 3, 2024
  10. Karthik NayakJun 6, 2024
  11. 07/29 revision: fix leaking display notesPatrick Steinhardt, Jun 3, 2024
  12. 08/29 notes: fix memory leak when pruning notesPatrick Steinhardt, Jun 3, 2024
  13. 09/29 builtin/rev-list: fix leaking bitmap index when calculating disk usagePatrick Steinhardt, Jun 3, 2024
  14. 10/29 object-name: free leaking object contextsPatrick Steinhardt, Jun 3, 2024
  15. 11/29 builtin/difftool: plug memory leaks in `run_dir_diff()`Patrick Steinhardt, Jun 3, 2024
  16. 12/29 builtin/merge-recursive: fix leaking object ID basesPatrick Steinhardt, Jun 3, 2024
  17. 13/29 merge-recursive: fix memory leak when finalizing mergePatrick Steinhardt, Jun 3, 2024
  18. Karthik NayakJun 6, 2024
  19. Phillip WoodJun 6, 2024
  20. Karthik NayakJun 12, 2024
  21. 14/29 builtin/log: fix leaking commit list in git-cherry(1)Patrick Steinhardt, Jun 3, 2024
  22. 15/29 revision: free diff optionsPatrick Steinhardt, Jun 3, 2024
  23. 16/29 builtin/stash: fix leak in `show_stash()`Patrick Steinhardt, Jun 3, 2024
  24. 17/29 rerere: fix various trivial leaksPatrick Steinhardt, Jun 3, 2024
  25. 18/29 config: fix leaking "core.notesref" variablePatrick Steinhardt, Jun 3, 2024
  26. 19/29 commit: fix leaking parents when calling `commit_tree_extended()`Patrick Steinhardt, Jun 3, 2024
  27. 20/29 sequencer: fix leaking string buffer in `commit_staged_changes()`Patrick Steinhardt, Jun 3, 2024
  28. Phillip WoodJun 3, 2024
  29. Patrick SteinhardtJun 4, 2024
  30. Patrick SteinhardtJun 4, 2024
  31. Phillip WoodJun 4, 2024
  32. 21/29 apply: fix leaking string in `match_fragment()`Patrick Steinhardt, Jun 3, 2024
  33. 22/29 builtin/clone: plug leaking HEAD ref in `wanted_peer_refs()`Patrick Steinhardt, Jun 3, 2024
  34. 23/29 sequencer: fix memory leaks in `make_script_with_merges()`Patrick Steinhardt, Jun 3, 2024
  35. 24/29 builtin/merge: fix leaking `struct cmdnames` in `get_strategy()`Patrick Steinhardt, Jun 3, 2024
  36. 25/29 merge: fix leaking merge basesPatrick Steinhardt, Jun 3, 2024
  37. 26/29 line-range: plug leaking find functionsPatrick Steinhardt, Jun 3, 2024
  38. 27/29 blame: fix leaking data for blame scoreboardsPatrick Steinhardt, Jun 3, 2024
  39. 28/29 builtin/blame: fix leaking prefixed pathsPatrick Steinhardt, Jun 3, 2024
  40. 29/29 builtin/blame: fix leaking ignore revs filesPatrick Steinhardt, Jun 3, 2024
  41. Karthik NayakJun 6, 2024
  42. Patrick SteinhardtJun 7, 2024
  43. 00/29 Memory leak fixes (pt.2)Patrick Steinhardt, Jun 11, 2024
  44. 01/29 revision: fix memory leak when reversing revisionsPatrick Steinhardt, Jun 11, 2024
  45. 02/29 parse-options: fix leaks for users of OPT_FILENAMEPatrick Steinhardt, Jun 11, 2024
  46. 03/29 notes-utils: free note trees when releasing copied notesPatrick Steinhardt, Jun 11, 2024
  47. 04/29 bundle: plug leaks in `create_bundle()`Patrick Steinhardt, Jun 11, 2024
  48. 05/29 biultin/rev-parse: fix memory leaks in `--parseopt` modePatrick Steinhardt, Jun 11, 2024
  49. 06/29 merge-recursive: fix leaking rename conflict infoPatrick Steinhardt, Jun 11, 2024
  50. 07/29 revision: fix leaking display notesPatrick Steinhardt, Jun 11, 2024
  51. 08/29 notes: fix memory leak when pruning notesPatrick Steinhardt, Jun 11, 2024
  52. 09/29 builtin/rev-list: fix leaking bitmap index when calculating disk usagePatrick Steinhardt, Jun 11, 2024
  53. 10/29 object-name: free leaking object contextsPatrick Steinhardt, Jun 11, 2024
  54. 11/29 builtin/difftool: plug memory leaks in `run_dir_diff()`Patrick Steinhardt, Jun 11, 2024
  55. 12/29 builtin/merge-recursive: fix leaking object ID basesPatrick Steinhardt, Jun 11, 2024
  56. 13/29 merge-recursive: fix memory leak when finalizing mergePatrick Steinhardt, Jun 11, 2024
  57. 14/29 builtin/log: fix leaking commit list in git-cherry(1)Patrick Steinhardt, Jun 11, 2024
  58. 15/29 revision: free diff optionsPatrick Steinhardt, Jun 11, 2024
  59. 16/29 builtin/stash: fix leak in `show_stash()`Patrick Steinhardt, Jun 11, 2024
  60. 17/29 rerere: fix various trivial leaksPatrick Steinhardt, Jun 11, 2024
  61. 18/29 config: fix leaking "core.notesref" variablePatrick Steinhardt, Jun 11, 2024
  62. 19/29 commit: fix leaking parents when calling `commit_tree_extended()`Patrick Steinhardt, Jun 11, 2024
  63. 20/29 sequencer: fix leaking string buffer in `commit_staged_changes()`Patrick Steinhardt, Jun 11, 2024
  64. 21/29 apply: fix leaking string in `match_fragment()`Patrick Steinhardt, Jun 11, 2024
  65. 22/29 builtin/clone: plug leaking HEAD ref in `wanted_peer_refs()`Patrick Steinhardt, Jun 11, 2024
  66. 23/29 sequencer: fix memory leaks in `make_script_with_merges()`Patrick Steinhardt, Jun 11, 2024
  67. 24/29 builtin/merge: fix leaking `struct cmdnames` in `get_strategy()`Patrick Steinhardt, Jun 11, 2024
  68. 25/29 merge: fix leaking merge basesPatrick Steinhardt, Jun 11, 2024
  69. 26/29 line-range: plug leaking find functionsPatrick Steinhardt, Jun 11, 2024
  70. 27/29 blame: fix leaking data for blame scoreboardsPatrick Steinhardt, Jun 11, 2024
  71. 28/29 builtin/blame: fix leaking prefixed pathsPatrick Steinhardt, Jun 11, 2024
  72. 29/29 builtin/blame: fix leaking ignore revs filesPatrick Steinhardt, Jun 11, 2024
  73. Phillip WoodJun 12, 2024
  74. Karthik NayakJun 12, 2024

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