Re: [PATCH] virt-admin: Fix segfault when libvirtd dies

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On 3/19/24 12:02, Adam Julis wrote:
> vshAdmCatchDisconnect requires non-NULL structure vshControl for
> getting connection name (stored at opaque), but
> virAdmConnectRegisterCloseCallback at vshAdmConnect called it
> with NULL.
> 
> Signed-off-by: Adam Julis <ajulis@xxxxxxxxxx>
> ---
>  tools/virt-admin.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/virt-admin.c b/tools/virt-admin.c
> index 37bc6fe4f0..0766032e4a 100644
> --- a/tools/virt-admin.c
> +++ b/tools/virt-admin.c
> @@ -112,7 +112,7 @@ vshAdmConnect(vshControl *ctl, unsigned int flags)
>          return -1;
>      } else {
>          if (virAdmConnectRegisterCloseCallback(priv->conn, vshAdmCatchDisconnect,
> -                                               NULL, NULL) < 0)
> +                                               ctl, NULL) < 0)
>              vshError(ctl, "%s", _("Unable to register disconnect callback"));
>  
>          if (priv->wantReconnect)

Hi,

if that is the case I would then expect that virAdmConnectRegisterCloseCallback() needs to also be updated with:

+virCheckNonNullArgGoto(opaque, error);

or something like that. Is there a reason why it isn't? We better catch the error early if the API is used wrongly.

Claudio
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