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authorZhengchao Shao <shaozhengchao@huawei.com>2022-12-09 17:29:29 +0800
committerAndrew Morton <akpm@linux-foundation.org>2022-12-11 19:30:20 -0800
commit12b677f2c697d61e5ddbcb6c1650050a39392f54 (patch)
treef59f8f4216ce68ed11564ac2cdba8566e357cfcd /ipc
parent9f2b5debc07073e6dfdd774e3594d0224b991927 (diff)
downloadlinux-12b677f2c697d61e5ddbcb6c1650050a39392f54.tar.bz2
ipc: fix memory leak in init_mqueue_fs()
When setup_mq_sysctls() failed in init_mqueue_fs(), mqueue_inode_cachep is not released. In order to fix this issue, the release path is reordered. Link: https://lkml.kernel.org/r/20221209092929.1978875-1-shaozhengchao@huawei.com Fixes: dc55e35f9e81 ("ipc: Store mqueue sysctls in the ipc namespace") Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Cc: Alexey Gladkov <legion@kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Jingyu Wang <jingyuwang_vip@163.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Waiman Long <longman@redhat.com> Cc: Wei Yongjun <weiyongjun1@huawei.com> Cc: YueHaibing <yuehaibing@huawei.com> Cc: Yu Zhe <yuzhe@nfschina.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'ipc')
-rw-r--r--ipc/mqueue.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 467a194b8a2e..d09aa1c1e3e6 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -1726,7 +1726,8 @@ static int __init init_mqueue_fs(void)
if (!setup_mq_sysctls(&init_ipc_ns)) {
pr_warn("sysctl registration failed\n");
- return -ENOMEM;
+ error = -ENOMEM;
+ goto out_kmem;
}
error = register_filesystem(&mqueue_fs_type);
@@ -1744,8 +1745,9 @@ static int __init init_mqueue_fs(void)
out_filesystem:
unregister_filesystem(&mqueue_fs_type);
out_sysctl:
- kmem_cache_destroy(mqueue_inode_cachep);
retire_mq_sysctls(&init_ipc_ns);
+out_kmem:
+ kmem_cache_destroy(mqueue_inode_cachep);
return error;
}