linux-kernel - [PATCH 06/48] staging/lustre/llite: check alloc in ll_file_data_get, ll_dir

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Date:	Tue, 23 Jul 2013 00:06:27 +0800
From:	Peng Tao <bergwolf@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org,
	"John L. Hammond" <john.hammond@...el.com>,
	Peng Tao <tao.peng@....com>,
	Andreas Dilger <andreas.dilger@...el.com>
Subject: [PATCH 06/48] staging/lustre/llite: check alloc in ll_file_data_get, ll_dir_ioctl

From: "John L. Hammond" <john.hammond@...el.com>

In ll_file_data_get() and ll_dir_ioctl() return error on failed
allocations.

Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2753
Lustre-change: http://review.whamcloud.com/5845
Signed-off-by: John L. Hammond <john.hammond@...el.com>
Reviewed-by: Andreas Dilger <andreas.dilger@...el.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@...el.com>
Reviewed-by: Sebastien Buisson <sebastien.buisson@...l.net>
Signed-off-by: Peng Tao <tao.peng@....com>
Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
---
 drivers/staging/lustre/lustre/llite/dir.c  |    2 ++
 drivers/staging/lustre/lustre/llite/file.c |    2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index 1084999..bfc914e 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -1561,6 +1561,8 @@ out_rmdir:
 			RETURN(rc);
 
 		OBD_ALLOC_LARGE(lmm, lmmsize);
+		if (lmm == NULL)
+			RETURN(-ENOMEM);
 		if (copy_from_user(lmm, lum, lmmsize))
 			GOTO(free_lmm, rc = -EFAULT);
 
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index efe66d9..927b3a0 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -55,6 +55,8 @@ struct ll_file_data *ll_file_data_get(void)
 	struct ll_file_data *fd;
 
 	OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, __GFP_IO);
+	if (fd == NULL)
+		return NULL;
 	fd->fd_write_failed = false;
 	return fd;
 }
-- 
1.7.9.5

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