nfs: add kmalloc return value check in decode_and_add_ds

add kmalloc return value check in decode_and_add_ds

Signed-off-by: Stanislav Fomichev <kernel@fomichev.me>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c
index f5c9b12..b73c343 100644 (file)
--- a/fs/nfs/nfs4filelayoutdev.c
+++ b/fs/nfs/nfs4filelayoutdev.c
@@ -219,6 +219,10 @@ decode_and_add_ds(__be32 **pp, struct inode *inode)
                goto out_err;
        }
        buf = kmalloc(rlen + 1, GFP_KERNEL);
+       if (!buf) {
+               dprintk("%s: Not enough memory\n", __func__);
+               goto out_err;
+       }
        buf[rlen] = '\0';
        memcpy(buf, r_addr, rlen);