From f2bcc69e7ecbd80fe1de81a196c97173f33785b5 Mon Sep 17 00:00:00 2001 From: Ævar Arnfjörð Bjarmason Date: Fri, 4 Mar 2022 19:32:04 +0100 Subject: index-pack: fix memory leaks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix various memory leaks in "git index-pack", due to how tightly coupled this command is with the revision walking this doesn't make any new tests pass. But e.g. this now passes, and had several failures before, i.e. we still have failures in tests 3, 5 etc., which are being skipped here. ./t5300-pack-object.sh --run=1-2,4,6-27,30-42 It is a bit odd that we'll free "opts.anomaly", since the "opts" is a "struct pack_idx_option" declared in pack.h. In pack-write.c there's a reset_pack_idx_option(), but it only wipes the contents, but doesn't free() anything. Doing this here in cmd_index_pack() is correct because while the struct is declared in pack.h, this code in builtin/index-pack.c (in read_v2_anomalous_offsets()) is what allocates the "opts.anomaly", so we should also free it here. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- builtin/index-pack.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'builtin') diff --git a/builtin/index-pack.c b/builtin/index-pack.c index 3c2e6aee3c..5fe1adb368 100644 --- a/builtin/index-pack.c +++ b/builtin/index-pack.c @@ -1109,6 +1109,7 @@ static void *threaded_second_pass(void *data) list_add(&child->list, &work_head); base_cache_used += child->size; prune_base_data(NULL); + free_base_data(child); } else { /* * This child does not have its own children. It may be @@ -1131,6 +1132,7 @@ static void *threaded_second_pass(void *data) p = next_p; } + FREE_AND_NULL(child); } work_unlock(); } @@ -1424,6 +1426,7 @@ static void fix_unresolved_deltas(struct hashfile *f) * object). */ append_obj_to_pack(f, d->oid.hash, data, size, type); + free(data); threaded_second_pass(NULL); display_progress(progress, nr_resolved_deltas); @@ -1703,6 +1706,7 @@ static void show_pack_info(int stat_only) i + 1, chain_histogram[i]); } + free(chain_histogram); } int cmd_index_pack(int argc, const char **argv, const char *prefix) @@ -1932,6 +1936,7 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix) if (do_fsck_object && fsck_finish(&fsck_options)) die(_("fsck error in pack objects")); + free(opts.anomaly); free(objects); strbuf_release(&index_name_buf); strbuf_release(&rev_index_name_buf); -- cgit v1.3 From e69fe2e460080771e1de43f2e8b76adda2252c5f Mon Sep 17 00:00:00 2001 From: Ævar Arnfjörð Bjarmason Date: Fri, 4 Mar 2022 19:32:05 +0100 Subject: merge-base: free() allocated "struct commit **" list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix a memory leak in 53eda89b2fe (merge-base: teach "git merge-base" to drive underlying merge_bases_many(), 2008-07-30) by calling free() on the "struct commit **" list used by "git merge-base". This gets e.g. "t6010-merge-base.sh" closer to passing under SANITIZE=leak, it failed 8 tests before when compiled with that option, and now fails only 5 tests. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- builtin/merge-base.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'builtin') diff --git a/builtin/merge-base.c b/builtin/merge-base.c index 26b84980db..a11f8c6e4b 100644 --- a/builtin/merge-base.c +++ b/builtin/merge-base.c @@ -138,6 +138,7 @@ int cmd_merge_base(int argc, const char **argv, const char *prefix) int rev_nr = 0; int show_all = 0; int cmdmode = 0; + int ret; struct option options[] = { OPT_BOOL('a', "all", &show_all, N_("output all common ancestors")), @@ -186,5 +187,7 @@ int cmd_merge_base(int argc, const char **argv, const char *prefix) ALLOC_ARRAY(rev, argc); while (argc-- > 0) rev[rev_nr++] = get_commit_reference(*argv++); - return show_merge_base(rev, rev_nr, show_all); + ret = show_merge_base(rev, rev_nr, show_all); + free(rev); + return ret; } -- cgit v1.3 From a41e8e74674d53a46616b01f2c18e43c7f2f30a8 Mon Sep 17 00:00:00 2001 From: Ævar Arnfjörð Bjarmason Date: Fri, 4 Mar 2022 19:32:07 +0100 Subject: urlmatch.c: add and use a *_release() function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Plug a memory leak in credential_apply_config() by adding and using a new urlmatch_config_release() function. This just does a string_list_clear() on the "vars" member. This finished up work on normalizing the init/free pattern in this API, started in 73ee449bbf2 (urlmatch.[ch]: add and use URLMATCH_CONFIG_INIT, 2021-10-01). Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- builtin/config.c | 2 +- credential.c | 1 + urlmatch.c | 5 +++++ urlmatch.h | 1 + 4 files changed, 8 insertions(+), 1 deletion(-) (limited to 'builtin') diff --git a/builtin/config.c b/builtin/config.c index 542d8d02b2..ebec61868b 100644 --- a/builtin/config.c +++ b/builtin/config.c @@ -612,7 +612,7 @@ static int get_urlmatch(const char *var, const char *url) strbuf_release(&matched->value); } - string_list_clear(&config.vars, 1); + urlmatch_config_release(&config); string_list_clear(&values, 1); free(config.url.url); diff --git a/credential.c b/credential.c index e7240f3f63..f6389a5068 100644 --- a/credential.c +++ b/credential.c @@ -130,6 +130,7 @@ static void credential_apply_config(struct credential *c) git_config(urlmatch_config_entry, &config); string_list_clear(&config.vars, 1); free(normalized_url); + urlmatch_config_release(&config); strbuf_release(&url); c->configured = 1; diff --git a/urlmatch.c b/urlmatch.c index 03ad3f30a9..b615adc923 100644 --- a/urlmatch.c +++ b/urlmatch.c @@ -611,3 +611,8 @@ int urlmatch_config_entry(const char *var, const char *value, void *cb) strbuf_release(&synthkey); return retval; } + +void urlmatch_config_release(struct urlmatch_config *config) +{ + string_list_clear(&config->vars, 1); +} diff --git a/urlmatch.h b/urlmatch.h index 34a3ba6d19..9f40b00bfb 100644 --- a/urlmatch.h +++ b/urlmatch.h @@ -71,5 +71,6 @@ struct urlmatch_config { } int urlmatch_config_entry(const char *var, const char *value, void *cb); +void urlmatch_config_release(struct urlmatch_config *config); #endif /* URL_MATCH_H */ -- cgit v1.3 From bf67dd8d9a29d02e44c622f62762a1cfc58fb3bb Mon Sep 17 00:00:00 2001 From: Ævar Arnfjörð Bjarmason Date: Fri, 4 Mar 2022 19:32:09 +0100 Subject: bundle: call strvec_clear() on allocated strvec MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixing this small memory leak in cmd_bundle_create() gets "t5607-clone-bundle.sh" closer to passing under SANITIZE=leak. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- builtin/bundle.c | 1 + 1 file changed, 1 insertion(+) (limited to 'builtin') diff --git a/builtin/bundle.c b/builtin/bundle.c index 5a85d7cd0f..2adad545a2 100644 --- a/builtin/bundle.c +++ b/builtin/bundle.c @@ -93,6 +93,7 @@ static int cmd_bundle_create(int argc, const char **argv, const char *prefix) { if (!startup_info->have_repository) die(_("Need a repository to create a bundle.")); ret = !!create_bundle(the_repository, bundle_file, argc, argv, &pack_opts, version); + strvec_clear(&pack_opts); free(bundle_file); return ret; } -- cgit v1.3 From 8f79015111f879451ceff83bbb9b4a29ebbbeb1d Mon Sep 17 00:00:00 2001 From: Ævar Arnfjörð Bjarmason Date: Fri, 4 Mar 2022 19:32:11 +0100 Subject: submodule--helper: fix trivial leak in module_add() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix a memory leak in code added in a6226fd772b (submodule--helper: convert the bulk of cmd_add() to C, 2021-08-10). If "realrepo" isn't a copy of the "repo" member we should free() it. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- builtin/submodule--helper.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'builtin') diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c index eeacefcc38..13b4841327 100644 --- a/builtin/submodule--helper.c +++ b/builtin/submodule--helper.c @@ -3309,6 +3309,7 @@ static int module_add(int argc, const char **argv, const char *prefix) { int force = 0, quiet = 0, progress = 0, dissociate = 0; struct add_data add_data = ADD_DATA_INIT; + char *to_free = NULL; struct option options[] = { OPT_STRING('b', "branch", &add_data.branch, N_("branch"), @@ -3360,7 +3361,8 @@ static int module_add(int argc, const char **argv, const char *prefix) "of the working tree")); /* dereference source url relative to parent's url */ - add_data.realrepo = resolve_relative_url(add_data.repo, NULL, 1); + to_free = resolve_relative_url(add_data.repo, NULL, 1); + add_data.realrepo = to_free; } else if (is_dir_sep(add_data.repo[0]) || strchr(add_data.repo, ':')) { add_data.realrepo = add_data.repo; } else { @@ -3413,6 +3415,7 @@ static int module_add(int argc, const char **argv, const char *prefix) } configure_added_submodule(&add_data); free(add_data.sm_path); + free(to_free); return 0; } -- cgit v1.3 From 4a0479086a9bea5d31c4588b07bd45ae92a12b71 Mon Sep 17 00:00:00 2001 From: Ævar Arnfjörð Bjarmason Date: Fri, 4 Mar 2022 19:32:12 +0100 Subject: commit-graph: fix memory leak in misused string_list API MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When this code was migrated to the string_list API in d88b14b3fd6 (commit-graph: use string-list API for input, 2018-06-27) it was made to use used both STRING_LIST_INIT_NODUP and a strbuf_detach() pattern. Those should not be used together if string_list_clear() is expected to free the memory, instead we need to either use STRING_LIST_INIT_DUP with a string_list_append_nodup(), or a STRING_LIST_INIT_NODUP and manually fiddle with the "strdup_strings" member before calling string_list_clear(). Let's do the former. Since "strdup_strings = 1" is set now other code might be broken by relying on "pack_indexes" not to duplicate it strings, but that doesn't happen. When we pass this down to write_commit_graph() that code uses the "struct string_list" without modifying it. Let's add a "const" to the variable to have the compiler enforce that assumption. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- builtin/commit-graph.c | 6 +++--- commit-graph.c | 4 ++-- commit-graph.h | 2 +- 3 files changed, 6 insertions(+), 6 deletions(-) (limited to 'builtin') diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c index 4247fbde95..51c4040ea6 100644 --- a/builtin/commit-graph.c +++ b/builtin/commit-graph.c @@ -192,7 +192,7 @@ static int git_commit_graph_write_config(const char *var, const char *value, static int graph_write(int argc, const char **argv) { - struct string_list pack_indexes = STRING_LIST_INIT_NODUP; + struct string_list pack_indexes = STRING_LIST_INIT_DUP; struct strbuf buf = STRBUF_INIT; struct oidset commits = OIDSET_INIT; struct object_directory *odb = NULL; @@ -273,8 +273,8 @@ static int graph_write(int argc, const char **argv) if (opts.stdin_packs) { while (strbuf_getline(&buf, stdin) != EOF) - string_list_append(&pack_indexes, - strbuf_detach(&buf, NULL)); + string_list_append_nodup(&pack_indexes, + strbuf_detach(&buf, NULL)); } else if (opts.stdin_commits) { oidset_init(&commits, 0); if (opts.progress) diff --git a/commit-graph.c b/commit-graph.c index 265c010122..d0c94600ba 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -1679,7 +1679,7 @@ int write_commit_graph_reachable(struct object_directory *odb, } static int fill_oids_from_packs(struct write_commit_graph_context *ctx, - struct string_list *pack_indexes) + const struct string_list *pack_indexes) { uint32_t i; struct strbuf progress_title = STRBUF_INIT; @@ -2259,7 +2259,7 @@ out: } int write_commit_graph(struct object_directory *odb, - struct string_list *pack_indexes, + const struct string_list *const pack_indexes, struct oidset *commits, enum commit_graph_write_flags flags, const struct commit_graph_opts *opts) diff --git a/commit-graph.h b/commit-graph.h index 04a94e1830..2e3ac35237 100644 --- a/commit-graph.h +++ b/commit-graph.h @@ -142,7 +142,7 @@ int write_commit_graph_reachable(struct object_directory *odb, enum commit_graph_write_flags flags, const struct commit_graph_opts *opts); int write_commit_graph(struct object_directory *odb, - struct string_list *pack_indexes, + const struct string_list *pack_indexes, struct oidset *commits, enum commit_graph_write_flags flags, const struct commit_graph_opts *opts); -- cgit v1.3 From ef3fe214484f79afdad4204d56e0ee7ff6e85a0f Mon Sep 17 00:00:00 2001 From: Ævar Arnfjörð Bjarmason Date: Fri, 4 Mar 2022 19:32:14 +0100 Subject: lockfile API users: simplify and don't leak "path" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix a memory leak in code added in 6c622f9f0bb (commit-graph: write commit-graph chains, 2019-06-18). We needed to free the "lock_name" if we encounter errors, and the "graph_name" after we'd run unlink() on it. For the case of write_commit_graph_file() refactoring the code to free the "lock_name" after we were done using the "struct lock_file lk" would have made the control flow more complex. Luckily we can free the "lock_file" right after the hold_lock_file_for_update() call, if it makes use of "path" at all it'll have copied its contents to a "struct strbuf" of its own. While I'm at it let's fix code added in fb10ca5b543 (sparse-checkout: write using lockfile, 2019-11-21) in write_patterns_and_update() to avoid the same complexity that I thought I needed when I wrote the initial fix for write_commit_graph_file(). We can free the "sparse_filename" right after calling hold_lock_file_for_update(), we don't need to wait until we're exiting the function to do so. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- builtin/sparse-checkout.c | 3 +-- commit-graph.c | 2 ++ 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'builtin') diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c index 9c338d33ea..270ad49c2b 100644 --- a/builtin/sparse-checkout.c +++ b/builtin/sparse-checkout.c @@ -328,11 +328,11 @@ static int write_patterns_and_update(struct pattern_list *pl) fd = hold_lock_file_for_update(&lk, sparse_filename, LOCK_DIE_ON_ERROR); + free(sparse_filename); result = update_working_directory(pl); if (result) { rollback_lock_file(&lk); - free(sparse_filename); clear_pattern_list(pl); update_working_directory(NULL); return result; @@ -348,7 +348,6 @@ static int write_patterns_and_update(struct pattern_list *pl) fflush(fp); commit_lock_file(&lk); - free(sparse_filename); clear_pattern_list(pl); return 0; diff --git a/commit-graph.c b/commit-graph.c index aab0b29277..b8cde7ea27 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -1854,6 +1854,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx) hold_lock_file_for_update_mode(&lk, lock_name, LOCK_DIE_ON_ERROR, 0444); + free(lock_name); fd = git_mkstemp_mode(ctx->graph_name, 0444); if (fd < 0) { @@ -1978,6 +1979,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx) } else { char *graph_name = get_commit_graph_filename(ctx->odb); unlink(graph_name); + free(graph_name); } ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1] = xstrdup(hash_to_hex(file_hash)); -- cgit v1.3