Re: [PATCH v3] proc/kcore: fix invalid memory access in multi-page read optimization

[Dominique Martinet]

Andrew Morton wrote on Wed, Sep 05, 2018:
> lgtm.  Let's add a nice little why-were-doing-this?

Sure, thank you.

> --- a/fs/proc/kcore.c~proc-kcore-fix-invalid-memory-access-in-multi-page-read-optimization-v3-fix
> +++ a/fs/proc/kcore.c
> @@ -464,7 +464,7 @@ read_kcore(struct file *file, char __use
>  				ret = -EFAULT;
>  				goto out;
>  			}
> -			m = NULL;
> +			m = NULL;	/* skip the list anchor */
>  		} else if (m->type == KCORE_VMALLOC) {
>  			vread(buf, (char *)start, tsz);
>  			/* we have to zero-fill user buffer even if no read */

-- 
Dominique