From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
The write_commit_graph() method in commit-graph.c leaks some lits
and strings during execution. In addition, a list of strings is
leaked in write_commit_graph_reachable(). Clean these up so our
memory checking is cleaner.
Further, if we use a list of pack-files to find the commits, we
can leak the packed_git structs after scanning them for commits.
Running the following commands demonstrates the leak before and
the fix after:
* valgrind --leak-check=full ./git commit-graph write --reachable
* valgrind --leak-check=full ./git commit-graph write --stdin-packs
Signed-off-by: Martin Ågren <martin.agren@xxxxxxxxx>
Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
---
commit-graph.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/commit-graph.c b/commit-graph.c
index 2a24eb8b5a..ceca6026b0 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -693,11 +693,12 @@ static int add_ref_to_list(const char *refname,
void write_commit_graph_reachable(const char *obj_dir, int append,
int report_progress)
{
- struct string_list list;
+ struct string_list list = STRING_LIST_INIT_DUP;
- string_list_init(&list, 1);
for_each_ref(add_ref_to_list, &list);
write_commit_graph(obj_dir, NULL, &list, append, report_progress);
+
+ string_list_clear(&list, 0);
}
void write_commit_graph(const char *obj_dir,
@@ -764,6 +765,7 @@ void write_commit_graph(const char *obj_dir,
die(_("error opening index for %s"), packname.buf);
for_each_object_in_pack(p, add_packed_commits, &oids, 0);
close_pack(p);
+ free(p);
}
stop_progress(&oids.progress);
strbuf_release(&packname);
@@ -846,9 +848,11 @@ void write_commit_graph(const char *obj_dir,
compute_generation_numbers(&commits, report_progress);
graph_name = get_commit_graph_filename(obj_dir);
- if (safe_create_leading_directories(graph_name))
+ if (safe_create_leading_directories(graph_name)) {
+ UNLEAK(graph_name);
die_errno(_("unable to create leading directories of %s"),
graph_name);
+ }
hold_lock_file_for_update(&lk, graph_name, LOCK_DIE_ON_ERROR);
f = hashfd(lk.tempfile->fd, lk.tempfile->filename.buf);
@@ -893,9 +897,9 @@ void write_commit_graph(const char *obj_dir,
finalize_hashfile(f, NULL, CSUM_HASH_IN_STREAM | CSUM_FSYNC);
commit_lock_file(&lk);
+ free(graph_name);
+ free(commits.list);
free(oids.list);
- oids.alloc = 0;
- oids.nr = 0;
}
#define VERIFY_COMMIT_GRAPH_ERROR_HASH 2
--
gitgitgadget
