Re: [PATCH] drm/nouveau: Fix memory leak in nouveau_bo_alloc

From: Markus Elfring
Date: Tue Oct 22 2019 - 05:40:57 EST


> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> @@ -276,8 +276,10 @@ nouveau_bo_alloc(struct nouveau_cli *cli, u64 *size, int *align, u32 flags,
> break;
> }
>
> - if (WARN_ON(pi < 0))
> + if (WARN_ON(pi < 0)) {
> + kfree(nvbo);
> return ERR_PTR(-EINVAL);
> + }
>
> /* Disable compression if suitable settings couldn't be found. */
> if (nvbo->comp && !vmm->page[pi].comp) {

This addition looks correct.
But I would prefer to move such exception handling code to the end of
this function implementation so that duplicate source code will be reduced.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/coding-style.rst?id=7d194c2100ad2a6dded545887d02754948ca5241#n450

Regards,
Markus