Messages in this thread Patch in this message |  | | | Date | Fri, 30 Jan 2009 18:40:48 -0800 | | From | Greg KH <> | | Subject | [patch 28/32] sgi-xpc: Remove NULL pointer dereference. |
2.6.27-stable review patch. If anyone has any objections, please let us know.
------------------
From: Robin Holt <holt@sgi.com>
commit 17e2161654da4e6bdfd8d53d4f52e820ee93f423 upstream.
If the bte copy fails, the attempt to retrieve payloads merely returns a
null pointer deref and not NULL as was expected.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/misc/sgi-xp/xpc_sn2.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/misc/sgi-xp/xpc_sn2.c
+++ b/drivers/misc/sgi-xp/xpc_sn2.c
@@ -1962,11 +1962,13 @@ xpc_get_deliverable_payload_sn2(struct x
msg = xpc_pull_remote_msg_sn2(ch, get);
- DBUG_ON(msg != NULL && msg->number != get);
- DBUG_ON(msg != NULL && (msg->flags & XPC_M_SN2_DONE));
- DBUG_ON(msg != NULL && !(msg->flags & XPC_M_SN2_READY));
+ if (msg != NULL) {
+ DBUG_ON(msg->number != get);
+ DBUG_ON(msg->flags & XPC_M_SN2_DONE);
+ DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
- payload = &msg->payload;
+ payload = &msg->payload;
+ }
break;
}
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