This is a note to let you know that I've just added the patch titled
igb: Initialize mailbox message for VF reset
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
igb-initialize-mailbox-message-for-vf-reset.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From de5dc44370fbd6b46bd7f1a1e00369be54a041c8 Mon Sep 17 00:00:00 2001
From: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Date: Mon, 12 Dec 2022 11:00:31 -0800
Subject: igb: Initialize mailbox message for VF reset
From: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
commit de5dc44370fbd6b46bd7f1a1e00369be54a041c8 upstream.
When a MAC address is not assigned to the VF, that portion of the message
sent to the VF is not set. The memory, however, is allocated from the
stack meaning that information may be leaked to the VM. Initialize the
message buffer to 0 so that no information is passed to the VM in this
case.
Fixes: 6ddbc4cf1f4d ("igb: Indicate failure on vf reset for empty mac address")
Reported-by: Akihiko Odaki <akihiko.odaki@xxxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Reviewed-by: Akihiko Odaki <akihiko.odaki@xxxxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221212190031.3983342-1-anthony.l.nguyen@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/intel/igb/igb_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -6422,7 +6422,7 @@ static void igb_vf_reset_msg(struct igb_
{
struct e1000_hw *hw = &adapter->hw;
unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
- u32 reg, msgbuf[3];
+ u32 reg, msgbuf[3] = {};
u8 *addr = (u8 *)(&msgbuf[1]);
/* process all the same items cleared in a function level reset */
Patches currently in stable-queue which might be from anthony.l.nguyen@xxxxxxxxx are
queue-4.14/igb-initialize-mailbox-message-for-vf-reset.patch
