[patch 04/23] [PATCH] packet writing oops fix

[patch 04/23] [PATCH] packet writing oops fix

[Chris Wright]

[-- Attachment #1: packet-writing-oops-fix.patch --]
[-- Type: text/plain, Size: 955 bytes --]

-stable review patch.  If anyone has any objections, please let us know.
------------------

There is an old bug in the pkt_count_states() function that causes stack
corruption.  When compiling with gcc 3.x or 2.x it is harmless, but gcc 4
allocates local variables differently, which makes the bug visible.

Signed-off-by: Peter Osterlund <petero2@telia.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/block/pktcdvd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2.6.14.2.orig/drivers/block/pktcdvd.c
+++ linux-2.6.14.2/drivers/block/pktcdvd.c
@@ -1191,7 +1191,7 @@ static void pkt_count_states(struct pktc
 	struct packet_data *pkt;
 	int i;
 
-	for (i = 0; i <= PACKET_NUM_STATES; i++)
+	for (i = 0; i < PACKET_NUM_STATES; i++)
 		states[i] = 0;
 
 	spin_lock(&pd->cdrw.active_list_lock);

--