From a460ad62260def15c42130de253d6cfc32528a2f Mon Sep 17 00:00:00 2001
From: Phillip Susi <psusi@cfl.rr.com>
Date: Sat, 4 Feb 2006 23:27:44 -0800
Subject: [PATCH] pktcdvd: Fix overflow for discs with large packets
The pktcdvd driver was using an 8 bit field to store the packet length
obtained from the disc track info. This causes it to overflow packet length
values of 128KB or more. I changed the field to 32 bits to fix this.
The pktcdvd driver defaulted to its maximum allowed packet length when it
detected a 0 in the track info field. I changed this to fail the operation
and refuse to access the media. This seems more sane than attempting to
access it with a value that almost certainly will not work.
Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
include/linux/pktcdvd.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'include')
diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h
index 2c177e4c8f..d1c9c4a86e 100644
--- a/include/linux/pktcdvd.h
+++ b/include/linux/pktcdvd.h
@@ -114,7 +114,7 @@ struct pkt_ctrl_command {
struct packet_settings
{
- __u8 size; /* packet size in (512 byte) sectors */
+ __u32 size; /* packet size in (512 byte) sectors */
__u8 fp; /* fixed packets */
__u8 link_loss; /* the rest is specified
* as per Mt Fuji */
--
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