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| author | Pavel Emelianov <xemul@openvz.org> | 2006-10-28 21:38:33 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-28 22:30:52 +0400 |
| commit | 6a2aae06cc1e87e9712a26a639f6a2f3442e2027 (patch) | |
| tree | 6c9e0f73d39646670c301e19ccd8b33d3aa3a293 /fs/block_dev.c | |
| parent | f2d0aa5bf8d4f7ae4cb1a7feebf5b1afddd0b9b0 (diff) | |
| download | linux-6a2aae06cc1e87e9712a26a639f6a2f3442e2027.tar.xz | |
[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.c | 2 |
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) filp->f_flags |= O_LARGEFILE; bdev = bd_acquire(inode); + if (bdev == NULL) + return -ENOMEM; res = do_open(bdev, filp, BD_MUTEX_NORMAL); if (res) |