netdev - Re: [PATCH v3] kvmalloc: always use vmalloc if CONFIG_DEBUG

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Message-ID: <20180424034643.GA26636@bombadil.infradead.org>
Date:   Mon, 23 Apr 2018 20:46:43 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Mikulas Patocka <mpatocka@...hat.com>
Cc:     Michal Hocko <mhocko@...nel.org>,
        David Miller <davem@...emloft.net>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        eric.dumazet@...il.com, edumazet@...gle.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        mst@...hat.com, jasowang@...hat.com,
        virtualization@...ts.linux-foundation.org, dm-devel@...hat.com,
        Vlastimil Babka <vbabka@...e.cz>
Subject: Re: [PATCH v3] kvmalloc: always use vmalloc if CONFIG_DEBUG_SG

On Mon, Apr 23, 2018 at 08:06:16PM -0400, Mikulas Patocka wrote:
> Some bugs (such as buffer overflows) are better detected
> with kmalloc code, so we must test the kmalloc path too.

Well now, this brings up another item for the collective TODO list --
implement redzone checks for vmalloc.  Unless this is something already
taken care of by kasan or similar.