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| author | Vasily Averin <vvs@sw.ru> | 2007-07-17 04:04:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-17 10:23:06 -0700 |
| commit | 010904cbed3db3464213fbc602802cc6f53e56e1 (patch) | |
| tree | 988b0689b63757dbac896ec9c2a8bf6ebb76b618 /drivers/message/i2o | |
| parent | 1725d71d992f5947bdd5b4f9a30fe8a05571fe66 (diff) | |
| download | op-kernel-dev-010904cbed3db3464213fbc602802cc6f53e56e1.zip op-kernel-dev-010904cbed3db3464213fbc602802cc6f53e56e1.tar.gz | |
wrong memory access in i2o_block_device_lock()
This patch fixes access to memory that has not been allocated:
i2o_msg_get_wait() can returns errors different from I2O_QUEUE_EMPTY. But the
result is checked only against this code. If it is not I2O_QUEUE_EMPTY then
we dereference the error code as the pointer later.
Signed-off-by: Vasily Averin <vvs@sw.ru>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Acked-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/message/i2o')
| -rw-r--r-- | drivers/message/i2o/i2o_block.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c index b17c4b2..64a52bd 100644 --- a/drivers/message/i2o/i2o_block.c +++ b/drivers/message/i2o/i2o_block.c @@ -215,7 +215,7 @@ static int i2o_block_device_lock(struct i2o_device *dev, u32 media_id) struct i2o_message *msg; msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET); - if (IS_ERR(msg) == I2O_QUEUE_EMPTY) + if (IS_ERR(msg)) return PTR_ERR(msg); msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0); |
