diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index b3c64ab0d5a5..f52c01804f81 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -695,6 +695,12 @@ static int __f2fs_setxattr(struct inode *inode, int index,
 		memcpy(pval, value, size);
 		last->e_value_size = cpu_to_le16(size);
 		new_hsize += newsize;
+		/*
+		 * Explicitly add the null terminator.  The unused xattr space
+		 * is supposed to always be zeroed, which would make this
+		 * unnecessary, but don't depend on that.
+		 */
+		*(u32 *)((u8 *)last + newsize) = 0;
 	}
 
 	error = write_all_xattrs(inode, new_hsize, base_addr, ipage);