From: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
rte_timer_subsystem_initialized is a global variable that can be
accessed by multiple processes simultaneously. Hence, any access
to rte_timer_subsystem_initialized should be protected by
rte_mcfg_timer_lock.
Fixes: f9d6cd8bfe9e ("timer: fix resource leak in finalize")
Cc: sta...@dpdk.org
Signed-off-by: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
Reviewed-by: Gavin Hu <gavin...@arm.com>
Reviewed-by: Phil Yang <phil.y...@arm.com>
---
lib/librte_timer/rte_timer.c | 24 ++++++++++++++----------
1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/lib/librte_timer/rte_timer.c b/lib/librte_timer/rte_timer.c
index 89f2707..269e921 100644
--- a/lib/librte_timer/rte_timer.c
+++ b/lib/librte_timer/rte_timer.c
@@ -145,11 +145,13 @@ rte_timer_subsystem_init(void)
const size_t mem_size = data_arr_size + sizeof(*rte_timer_mz_refcnt);
bool do_full_init = true;
- if (rte_timer_subsystem_initialized)
- return -EALREADY;
-
rte_mcfg_timer_lock();
+ if (rte_timer_subsystem_initialized) {
+ rte_mcfg_timer_unlock();
+ return -EALREADY;
+ }
+
mz = rte_memzone_lookup(mz_name);
if (mz == NULL) {
mz = rte_memzone_reserve_aligned(mz_name, mem_size,
@@ -183,27 +185,29 @@ rte_timer_subsystem_init(void)
rte_timer_data_arr[default_data_id].internal_flags |= FL_ALLOCATED;
(*rte_timer_mz_refcnt)++;
- rte_mcfg_timer_unlock();
-
rte_timer_subsystem_initialized = 1;
+ rte_mcfg_timer_unlock();
+
return 0;
}
void
rte_timer_subsystem_finalize(void)
{
- if (!rte_timer_subsystem_initialized)
- return;
-
rte_mcfg_timer_lock();
+ if (!rte_timer_subsystem_initialized) {
+ rte_mcfg_timer_unlock();
+ return;
+ }
+
if (--(*rte_timer_mz_refcnt) == 0)
rte_memzone_free(rte_timer_data_mz);
- rte_mcfg_timer_unlock();
-
rte_timer_subsystem_initialized = 0;
+
+ rte_mcfg_timer_unlock();
}
/* Initialize the timer handle tim for use */
--
2.7.4
