[focal:azure-cvm][PATCH] UBUNTU: SAUCE: Drivers: hv: vmbus: Initialize request offers message for Isolation VM

[Marcelo Henrique Cerri]

From: Juan Vazquez <juvazq at linux.microsoft.com>

BugLink: https://bugs.launchpad.net/bugs/1956793

Initialize memory of request offers message to be sent to the host so
padding or uninitialized fields do not leak guest memory contents.

Signed-off-by: Juan Vazquez <juvazq at linux.microsoft.com>
Link: https://lore.kernel.org/r/20220105192746.23046-1-juvazq@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu at kernel.org>
(cherry picked from commit 6a27e396ebb149fc47baccc1957a7a9dd70049a7
 from git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git)
Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri at canonical.com>
---
 drivers/hv/channel_mgmt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 454244385424..3bb86d9e1dff 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -1525,7 +1525,7 @@ int vmbus_request_offers(void)
 	struct vmbus_channel_msginfo *msginfo;
 	int ret;
 
-	msginfo = kmalloc(sizeof(*msginfo) +
+	msginfo = kzalloc(sizeof(*msginfo) +
 			  sizeof(struct vmbus_channel_message_header),
 			  GFP_KERNEL);
 	if (!msginfo)
-- 
2.25.1