lkml.org 
[lkml]   [2023]   [Aug]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] mm: memcomtrol: add warning in case of rtpn = NULL
Date
kzalloc_node may return NULL. So rtpn should be
checked before dereference in mem_cgroup_init.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 95a045f63d98 ("mm: memcontrol: consolidate memory controller initialization")
Signed-off-by: Anastasia Belova <abelova@astralinux.ru>
---
mm/memcontrol.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index e8ca4bdcb03c..7998dbf3c7cd 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -7377,6 +7377,7 @@ static int __init mem_cgroup_init(void)
struct mem_cgroup_tree_per_node *rtpn;

rtpn = kzalloc_node(sizeof(*rtpn), GFP_KERNEL, node);
+ WARN_ON(!rtpn);

rtpn->rb_root = RB_ROOT;
rtpn->rb_rightmost = NULL;
--
2.30.2
\
 
 \ /
  Last update: 2023-08-21 16:22    [W:0.076 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site