linux-kernel - Re: [PATCH] fnic: fixup patch to resolve stack frame issues

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Date:   Tue, 26 Jan 2021 19:17:55 -0800
From:   Lee Duncan <lduncan@...e.com>
To:     Lee Duncan <leeman.duncan@...il.com>, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Hannes Reinecke <hare@...e.de>, stable@...r.kernel.org
Subject: Re: [PATCH] fnic: fixup patch to resolve stack frame issues

On 1/26/21 5:21 PM, Lee Duncan wrote:
> From: Hannes Reinecke <hare@...e.de>
> 
> Commit 42ec15ceaea7 fixed a gcc issue with unused variables, but
> introduced errors since it allocated an array of two u64-s but
> then used more than that. Set the arrays to the proper size.
> 
> Fixes: 42ec15ceaea74b5f7a621fc6686cbf69ca66c4cf
> Cc: stable@...r.kernel.org
> Signed-off-by: Hannes Reinecke <hare@...e.de>
> Signed-off-by: Lee Duncan <lduncan@...e.com>
> ---
>  drivers/scsi/fnic/vnic_dev.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/scsi/fnic/vnic_dev.c b/drivers/scsi/fnic/vnic_dev.c
> index 5988c300cc82..d29999064b89 100644
> --- a/drivers/scsi/fnic/vnic_dev.c
> +++ b/drivers/scsi/fnic/vnic_dev.c
> @@ -697,7 +697,7 @@ int vnic_dev_hang_notify(struct vnic_dev *vdev)
>  
>  int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
>  {
> -	u64 a[2] = {};
> +	u64 a[ETH_ALEN] = {};
>  	int wait = 1000;
>  	int err, i;
>  
> @@ -734,7 +734,7 @@ void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
>  
>  void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
>  {
> -	u64 a[2] = {};
> +	u64 a[ETH_ALEN] = {};
>  	int wait = 1000;
>  	int err;
>  	int i;
> @@ -749,7 +749,7 @@ void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
>  
>  void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
>  {
> -	u64 a[2] = {};
> +	u64 a[ETH_ALEN] = {};
>  	int wait = 1000;
>  	int err;
>  	int i;
> 

This may not be correct. Please do not review this yet. I will re-submit
once I clear up my confusion.

-- 
Lee Duncan