Re: [PATCH] proc: add error handling for kmem_cache_create

[Alexey Dobriyan]

On Tue, Jun 12, 2018 at 12:23:52PM +0800, Zhouyang Jia wrote:
> When kmem_cache_create fails, the lack of error-handling code may
> cause unexpected results.
> 
> This patch adds error-handling code after calling kmem_cache_create.

>       pde_opener_cache =
>               kmem_cache_create("pde_opener", sizeof(struct pde_opener), 0,
>                                 SLAB_ACCOUNT|SLAB_PANIC, NULL);
> +     if (!proc_inode_cachep || !pde_opener_cache)
> +             return -ENOMEM;

SLAB_PANIC was added to not worry about error handling.