Re: [patch v2] scsi_dh_alua: uninitialized variable in alua_rtpg()

[Hannes Reinecke]

On 04/14/2016 08:20 PM, Dan Carpenter wrote:
> It's possible to use "err" without initializing it.  If it happens to be
> a 2 which is SCSI_DH_RETRY then that could cause a bug.  Bart Van Assche
> pointed out that we should probably re-initialize it for every iteration
> through the retry loop.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> v2: The first version just initialized it at the start of the function.
> 
> diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
> index 8eaed05..a655cf2 100644
> --- a/drivers/scsi/device_handler/scsi_dh_alua.c
> +++ b/drivers/scsi/device_handler/scsi_dh_alua.c
> @@ -532,6 +532,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg)
>  		return SCSI_DH_DEV_TEMP_BUSY;
>  
>   retry:
> +	err = 0;
>  	retval = submit_rtpg(sdev, buff, bufflen, &sense_hdr, pg->flags);
>  
>  	if (retval) {
> 
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>

Cheers,

Hannes
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