Re: [PATCH 3/3] tools/libxc/xc_linux_osdep.c: Don't leak mmap() mapping on map_foreign_bulk() error path

[Wei Liu <wei.liu2@citrix.com>]

On Mon, Mar 16, 2015 at 10:06:50AM +0000, PRAMOD DEVENDRA wrote:
> From: Pramod Devendra <pramod.devendra@citrix.com>
> 
> Signed-off-by: Pramod Devendra <pramod.devendra@citrix.com>
> CC: Ian Jackson <ian.jackson@eu.citrix.com>
> CC: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> CC: Ian Campbell <ian.campbell@citrix.com>
> CC: Wei Liu <wei.liu2@citrix.com>

Acked-by: Wei Liu <wei.liu2@citrix.com>

> ---
>  tools/libxc/xc_linux_osdep.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/libxc/xc_linux_osdep.c b/tools/libxc/xc_linux_osdep.c
> index b6c435a..ce59590 100644
> --- a/tools/libxc/xc_linux_osdep.c
> +++ b/tools/libxc/xc_linux_osdep.c
> @@ -323,6 +323,7 @@ static void *linux_privcmd_map_foreign_bulk(xc_interface *xch, xc_osdep_handle h
>              if ( pfn == MAP_FAILED )
>              {
>                  PERROR("xc_map_foreign_bulk: mmap of pfn array failed");
> +                (void)munmap(addr, (unsigned long)num << XC_PAGE_SHIFT);
>                  return NULL;
>              }
>          }
> -- 
> 1.7.10.4