On Thu, May 07, 2015 at 08:54:26AM +0000, Olaf Hering wrote:
> Handle NULL pointer passed to xlu_cfg_destroy. libvirt calls it in its
> libxlDriverConfigDispose function. If the XLU_Config was not initialized
> yet for some reason a crash would occour on cleanup.
> Avoid the crash just like libxl_ctx_free and xtl_logger_destroy do when
> called from the same context.
>
> Signed-off-by: Olaf Hering <o...@aepfle.de>
> Cc: Ian Jackson <ian.jack...@eu.citrix.com>
> Cc: Stefano Stabellini <stefano.stabell...@eu.citrix.com>
> Cc: Ian Campbell <ian.campb...@citrix.com>
> Cc: Wei Liu <wei.l...@citrix.com>
Acked-by: Wei Liu <wei.l...@citrix.com>
> ---
>
> Not sure if this is correct, or if libvirt should call this function
> only if cfg is valid.
>
> If this patch gets applied I suggest to apply this also to maintained
> trees.
>
>
> tools/libxl/libxlu_cfg.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/tools/libxl/libxlu_cfg.c b/tools/libxl/libxlu_cfg.c
> index 0a59b52..1d70909 100644
> --- a/tools/libxl/libxlu_cfg.c
> +++ b/tools/libxl/libxlu_cfg.c
> @@ -159,6 +159,7 @@ void xlu__cfg_set_free(XLU_ConfigSetting *set) {
> void xlu_cfg_destroy(XLU_Config *cfg) {
> XLU_ConfigSetting *set, *set_next;
>
> + if (!cfg) return;
> for (set= cfg->settings;
> set;
> set= set_next) {
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