It will result in null pointer access if shmem_init_inodecache fail,
so check return value of shmem_init_inodecache
Signed-off-by: Chen Wandun <chenwandun@xxxxxxxxxx>
---
mm/shmem.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index 12d45a03f7fc..7419ab219b97 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3775,11 +3775,16 @@ static void shmem_init_inode(void *foo)
inode_init_once(&info->vfs_inode);
}
-static void shmem_init_inodecache(void)
+static int shmem_init_inodecache(void)
{
shmem_inode_cachep = kmem_cache_create("shmem_inode_cache",
sizeof(struct shmem_inode_info),
0, SLAB_PANIC|SLAB_ACCOUNT, shmem_init_inode);
+
+ if (!shmem_inode_cachep)
+ return -ENOMEM;
+
+ return 0;
}
static void shmem_destroy_inodecache(void)
@@ -3923,7 +3928,9 @@ void __init shmem_init(void)
{
int error;
- shmem_init_inodecache();
+ error = shmem_init_inodecache();
+ if (error)
+ goto out2;
error = register_filesystem(&shmem_fs_type);
if (error) {
--
2.25.1
