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From d35c27e44abcde252abddf369762dee8da309903 Mon Sep 17 00:00:00 2001
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From: Yu Watanabe <watanabe.yu+github@gmail.com>
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Date: Tue, 10 May 2022 14:09:24 +0900
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Subject: [PATCH] core/timer: fix memleak
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Fixes #23326.
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(cherry picked from commit d3ab7b8078944db28bc621f43dd942a3c878fffb)
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Related: #2087652
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---
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 src/core/timer.c | 11 ++++++-----
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 1 file changed, 6 insertions(+), 5 deletions(-)
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diff --git a/src/core/timer.c b/src/core/timer.c
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index a13b864741..0dc49dd46b 100644
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--- a/src/core/timer.c
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+++ b/src/core/timer.c
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@@ -135,6 +135,7 @@ static int timer_add_trigger_dependencies(Timer *t) {
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 }
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 static int timer_setup_persistent(Timer *t) {
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+        _cleanup_free_ char *stamp_path = NULL;
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         int r;
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         assert(t);
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@@ -148,13 +149,13 @@ static int timer_setup_persistent(Timer *t) {
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                 if (r < 0)
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                         return r;
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-                t->stamp_path = strjoin("/var/lib/systemd/timers/stamp-", UNIT(t)->id);
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+                stamp_path = strjoin("/var/lib/systemd/timers/stamp-", UNIT(t)->id);
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         } else {
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                 const char *e;
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                 e = getenv("XDG_DATA_HOME");
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                 if (e)
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-                        t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id);
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+                        stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id);
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                 else {
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                         _cleanup_free_ char *h = NULL;
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@@ -163,14 +164,14 @@ static int timer_setup_persistent(Timer *t) {
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                         if (r < 0)
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                                 return log_unit_error_errno(UNIT(t), r, "Failed to determine home directory: %m");
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-                        t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id);
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+                        stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id);
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                 }
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         }
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-        if (!t->stamp_path)
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+        if (!stamp_path)
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                 return log_oom();
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-        return 0;
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+        return free_and_replace(t->stamp_path, stamp_path);
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 }
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 static uint64_t timer_get_fixed_delay_hash(Timer *t) {