From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 20 Dec 2010 12:26:59 +0000 (-0500)
Subject: ext4: Add error checking to kmem_cache_alloc() call in ext4_free_blocks()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b72143ab3ed566a12560fa4411a1f02c276dcc39;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ext4: Add error checking to kmem_cache_alloc() call in ext4_free_blocks()

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 731b6f738a03..46d5414f59c1 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4626,7 +4626,11 @@ do_more:
 		 * blocks being freed are metadata. these blocks shouldn't
 		 * be used until this transaction is committed
 		 */
-		new_entry  = kmem_cache_alloc(ext4_free_ext_cachep, GFP_NOFS);
+		new_entry = kmem_cache_alloc(ext4_free_ext_cachep, GFP_NOFS);
+		if (!new_entry) {
+			err = -ENOMEM;
+			goto error_return;
+		}
 		new_entry->start_blk = bit;
 		new_entry->group  = block_group;
 		new_entry->count = count;