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authorPavel Emelianov <xemul@openvz.org>2006-10-28 13:38:33 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-28 14:30:52 -0400
commit6a2aae06cc1e87e9712a26a639f6a2f3442e2027 (patch)
tree6c9e0f73d39646670c301e19ccd8b33d3aa3a293 /fs/block_dev.c
parentf2d0aa5bf8d4f7ae4cb1a7feebf5b1afddd0b9b0 (diff)
[PATCH] Fix potential OOPs in blkdev_open()
blkdev_open() calls bc_acquire() to get a struct block_device. Since bc_acquire() may return NULL when system is out of memory an appropriate check is required. Signed-off-by: Pavel Emelianov <xemul@openvz.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/block_dev.c')
-rw-r--r--fs/block_dev.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index bc8f27cc4483..702b88cbd91d 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1131,6 +1131,8 @@ static int blkdev_open(struct inode * inode, struct file * filp)
1131 filp->f_flags |= O_LARGEFILE; 1131 filp->f_flags |= O_LARGEFILE;
1132 1132
1133 bdev = bd_acquire(inode); 1133 bdev = bd_acquire(inode);
1134 if (bdev == NULL)
1135 return -ENOMEM;
1134 1136
1135 res = do_open(bdev, filp, BD_MUTEX_NORMAL); 1137 res = do_open(bdev, filp, BD_MUTEX_NORMAL);
1136 if (res) 1138 if (res)