From ce01f92889a9398b5170bf7e28425c94173cfe06 Mon Sep 17 00:00:00 2001 From: Patrick Steinhardt Date: Wed, 14 Aug 2024 08:51:52 +0200 Subject: [PATCH] remote: plug memory leak when aliasing URLs When we have a `url.*.insteadOf` configuration, then we end up aliasing URLs when populating remotes. One place where this happens is in `alias_all_urls()`, where we loop through all remotes and then alias each of their URLs. The actual aliasing logic is then contained in `alias_url()`, which returns an allocated string that contains the new URL. This URL replaces the old URL that we have in the strvec that contains all remote URLs. We replace the remote URLs via `strvec_replace()`, which does not hand over ownership of the new string to the vector. Still, we didn't free the aliased URL and thus have a memory leak here. Fix it by freeing the aliased string. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano --- remote.c | 2 ++ t/t0210-trace2-normal.sh | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/remote.c b/remote.c index f43cf5e7a4..3b898edd23 100644 --- a/remote.c +++ b/remote.c @@ -499,6 +499,7 @@ static void alias_all_urls(struct remote_state *remote_state) if (alias) strvec_replace(&remote_state->remotes[i]->pushurl, j, alias); + free(alias); } add_pushurl_aliases = remote_state->remotes[i]->pushurl.nr == 0; for (j = 0; j < remote_state->remotes[i]->url.nr; j++) { @@ -512,6 +513,7 @@ static void alias_all_urls(struct remote_state *remote_state) if (alias) strvec_replace(&remote_state->remotes[i]->url, j, alias); + free(alias); } } } diff --git a/t/t0210-trace2-normal.sh b/t/t0210-trace2-normal.sh index c312657a12..b9adc94aab 100755 --- a/t/t0210-trace2-normal.sh +++ b/t/t0210-trace2-normal.sh @@ -2,7 +2,7 @@ test_description='test trace2 facility (normal target)' -TEST_PASSES_SANITIZE_LEAK=false +TEST_PASSES_SANITIZE_LEAK=true . ./test-lib.sh # Turn off any inherited trace2 settings for this test.