linux-kernel - Re: Failure during Stack Depot allocating hash table of 1048576 entries with kvcalloc

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Date:   Fri, 13 Jan 2023 15:57:28 +0100
From:   Alexander Potapenko <glider@...gle.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Vlastimil Babka <vbabka@...e.cz>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Marco Elver <elver@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        linux-mm <linux-mm@...ck.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: Failure during Stack Depot allocating hash table of 1048576
 entries with kvcalloc

On Fri, Jan 13, 2023 at 3:30 PM Borislav Petkov <bp@...en8.de> wrote:
>
> Hi,
>
> Lemme CC the stackdepot.c commit signers re the below splat.
>
> Lemme know if you need more info.

The kernel commit and config would help.
Is this somehow related to SLUB_TINY? Perhaps stack depot is just
trying to allocate way more memory than allowed?
(I see that Memory: below shows a lot of free pages, but am not sure
how it works with SLUB_TINY).

> Thx.
>
> ...
> [    0.000000] software IO TLB: area num 4.
> [    0.000000] Memory: 15612528K/16165300K available (12288K kernel code, 116072K rwdata, 5024K rodata, 2412K init, 3822