From: Mike Rapoport <rppt@linux.vnet.ibm.com>
Date: Sun, 7 Oct 2018 08:31:51 +0000 (+0300)
Subject: percpu: stop leaking bitmap metadata blocks
X-Git-Tag: v4.14.77~46
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=54886c97839732650f0aabb90e674cad791e82c0;p=platform%2Fkernel%2Flinux-exynos.git

percpu: stop leaking bitmap metadata blocks

commit 6685b357363bfe295e3ae73665014db4aed62c58 upstream.

The commit ca460b3c9627 ("percpu: introduce bitmap metadata blocks")
introduced bitmap metadata blocks. These metadata blocks are allocated
whenever a new chunk is created, but they are never freed. Fix it.

Fixes: ca460b3c9627 ("percpu: introduce bitmap metadata blocks")
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/mm/percpu.c b/mm/percpu.c
index 5fa5e79..3074148 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1208,6 +1208,7 @@ static void pcpu_free_chunk(struct pcpu_chunk *chunk)
 {
 	if (!chunk)
 		return;
+	pcpu_mem_free(chunk->md_blocks);
 	pcpu_mem_free(chunk->bound_map);
 	pcpu_mem_free(chunk->alloc_map);
 	pcpu_mem_free(chunk);