From: Vasily Averin <vvs@sw.ru>
To: Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
devel@openvz.org, Markus Lidel <Markus.Lidel@shadowconnect.com>
Subject: [patch i2o 2/6] wrong memory access in i2o_block_device_lock()
Date: Tue, 15 May 2007 16:43:17 +0400 [thread overview]
Message-ID: <4649AAE5.50004@sw.ru> (raw)
In-Reply-To: <4649AA6C.2080808@sw.ru>
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>
--- lk2.6/drivers/message/i2o/i2o_block.c
+++ lk2.6/drivers/message/i2o/i2o_block.c
@@ -215,7 +215,7 @@ static int i2o_block_device_lock(struct
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);
next prev parent reply other threads:[~2007-05-15 12:43 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-15 12:41 [patch i2o] i2o layer cleanup Vasily Averin
2007-05-15 12:42 ` [patch i2o 1/6] i2o_cfg_passthru cleanup Vasily Averin
2007-05-15 16:42 ` Alan Cox
2007-05-15 12:43 ` Vasily Averin [this message]
2007-05-15 12:44 ` [patch i2o 3/6] i2o message leak in i2o_msg_post_wait_mem() Vasily Averin
2007-05-15 12:45 ` [patch i2o 4/6] i2o proc reading oops Vasily Averin
2007-05-15 12:47 ` [patch i2o 5/6] i2o_proc files permission Vasily Averin
2007-05-15 12:59 ` [Devel] " Vasily Averin
2007-05-16 9:27 ` Greg KH
2007-05-15 16:45 ` Alan Cox
2007-05-16 4:58 ` Vasily Averin
2007-05-16 12:52 ` Alan Cox
2007-05-15 12:48 ` [patch i2o 6/6] i2o debug output cleanup Vasily Averin
2007-05-15 16:46 ` Alan Cox
2007-05-15 12:53 ` [Devel] [patch i2o] i2o layer cleanup Kirill Korotaev
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