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 | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index 12d45a03f7fc..17f8297ece29 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3775,11 +3775,13 @@ static void shmem_init_inode(void *foo)
inode_init_once(&info->vfs_inode);
}
-static void shmem_init_inodecache(void)
+static struct kmem_cache *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);
+
+ return shmem_inode_cachep;
}
static void shmem_destroy_inodecache(void)
@@ -3923,7 +3925,10 @@ void __init shmem_init(void)
{
int error;
- shmem_init_inodecache();
+ if (!shmem_init_inodecache()) {
+ error = -ENOMEM;
+ goto out2;
+ }
error = register_filesystem(&shmem_fs_type);
if (error) {
--
2.25.1
