6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jian Shen <shenjian15@xxxxxxxxxx>
[ Upstream commit 8ffbd1669ed1d58939d6e878dffaa2f60bf961a4 ]
When ptr_ring_init() returns failure in page_pool_init(), free_percpu()
is not called to free pool->recycle_stats, which may cause memory
leak.
Fixes: ad6fa1e1ab1b ("page_pool: Add recycle stats")
Signed-off-by: Jian Shen <shenjian15@xxxxxxxxxx>
Signed-off-by: Jijie Shao <shaojijie@xxxxxxxxxx>
Reviewed-by: Yunsheng Lin <linyunsheng@xxxxxxxxxx>
Reviewed-by: Jiri Pirko <jiri@xxxxxxxxxx>
Reviewed-by: Somnath Kotur <somnath.kotur@xxxxxxxxxxxx>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231030091256.2915394-1-shaojijie@xxxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/core/page_pool.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 77cb75e63aca1..31f923e7b5c40 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -221,8 +221,12 @@ static int page_pool_init(struct page_pool *pool,
return -ENOMEM;
#endif
- if (ptr_ring_init(&pool->ring, ring_qsize, GFP_KERNEL) < 0)
+ if (ptr_ring_init(&pool->ring, ring_qsize, GFP_KERNEL) < 0) {
+#ifdef CONFIG_PAGE_POOL_STATS
+ free_percpu(pool->recycle_stats);
+#endif
return -ENOMEM;
+ }
atomic_set(&pool->pages_state_release_cnt, 0);
--
2.42.0
