From: K. Y. Srinivasan <kys@microsoft.com>
Date: Mon, 6 Jun 2011 22:50:06 +0000 (-0700)
Subject: Staging: hv: vmbus: Properly handle memory allocation failure in channel.c
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f38cf9ccd61d2acd5bc9121fabf2f6e77d74b885;p=deliverable%2Flinux.git

Staging: hv: vmbus: Properly handle memory allocation failure in channel.c

Properly handle memory allocation failure in channel.c.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/hv/channel.c b/drivers/staging/hv/channel.c
index 69b5641151e0..1833f275d0f8 100644
--- a/drivers/staging/hv/channel.c
+++ b/drivers/staging/hv/channel.c
@@ -355,9 +355,24 @@ static int create_gpadl_header(void *kbuffer, u32 size,
 				  sizeof(struct vmbus_channel_gpadl_body) +
 				  pfncurr * sizeof(u64);
 			msgbody = kzalloc(msgsize, GFP_KERNEL);
-			/* FIXME: we probably need to more if this fails */
-			if (!msgbody)
+
+			if (!msgbody) {
+				struct vmbus_channel_msginfo *pos = NULL;
+				struct vmbus_channel_msginfo *tmp = NULL;
+				/*
+				 * Free up all the allocated messages.
+				 */
+				list_for_each_entry_safe(pos, tmp,
+					&msgheader->submsglist,
+					msglistentry) {
+
+					list_del(&pos->msglistentry);
+					kfree(pos);
+				}
+
 				goto nomem;
+			}
+
 			msgbody->msgsize = msgsize;
 			(*messagecount)++;
 			gpadl_body =