Re: [PATCH V1] IB/core: memset attr variable to prevent garbage data

[Yann Droneaud <ydroneaud-RlY5vtjFyJ3QT0dZR+AlfA@public.gmane.org>]

Hi,

Le vendredi 26 septembre 2014 à 19:30 +0530, Devesh Sharma a écrit :
> During create-ah from user land, uverbs is sending
> garbage data in attr.dmac and attr.vlan_id. This
> patch prevents the same.
> 

Is the last sentence complete ?

> Fixes: dd5f03beb4f7 ('IB/core: Ethernet L2 attributes in verbs/cm
> structures')
> 
> Signed-off-by: Devesh Sharma <devesh.sharma-laKkSmNT4hbQT0dZR+AlfA@public.gmane.org>

Thanks for the updated patch.

Please put the "Cc:" in the commit message:

Fixes: dd5f03beb4f7 ('IB/core: Ethernet L2 attributes in verbs/cm structures')
Cc: Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Signed-off-by: Devesh Sharma <devesh.sharma-laKkSmNT4hbQT0dZR+AlfA@public.gmane.org>

This way, the list of people involved in handling the issue would be
recorded in the git history.
Additionnaly, git send-email gathers the Cc: in the commit message and
automatically send the email to the people listed.

> ---
>  drivers/infiniband/core/uverbs_cmd.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
> index 0600c50..5ba2a86 100644
> --- a/drivers/infiniband/core/uverbs_cmd.c
> +++ b/drivers/infiniband/core/uverbs_cmd.c
> @@ -2518,6 +2518,8 @@ ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
>  	attr.grh.sgid_index    = cmd.attr.grh.sgid_index;
>  	attr.grh.hop_limit     = cmd.attr.grh.hop_limit;
>  	attr.grh.traffic_class = cmd.attr.grh.traffic_class;
> +	attr.vlan_id           = 0;
> +	memset(&attr.dmac, 0, sizeof(attr.dmac));

OK.

>  	memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
>  
>  	ah = ib_create_ah(pd, &attr);

Regards.

-- 
Yann Droneaud
OPTEYA


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