From 17e2161654da4e6bdfd8d53d4f52e820ee93f423 Mon Sep 17 00:00:00 2001 From: Robin Holt Date: Thu, 29 Jan 2009 14:25:07 -0800 Subject: [PATCH] sgi-xpc: Remove NULL pointer dereference. 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 Signed-off-by: Dean Nelson Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/sgi-xp/xpc_sn2.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c index 7aafb8a91945..7d05fb5f4fee 100644 --- a/drivers/misc/sgi-xp/xpc_sn2.c +++ b/drivers/misc/sgi-xp/xpc_sn2.c @@ -1957,11 +1957,13 @@ xpc_get_deliverable_payload_sn2(struct xpc_channel *ch) 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; } -- GitLab