linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
From: Chris Murphy <lists@colorremedies.com>
To: Chris Murphy <lists@colorremedies.com>
Cc: Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: 5.11 "debug" missing 20-30% memory, and exceptionally high reserved
Date: Sat, 30 Jan 2021 16:21:08 -0700	[thread overview]
Message-ID: <CAJCQCtS8fXCVsyvoRW24pxZm56wMwQyOei5P9BLYFt9FHhwy7w@mail.gmail.com> (raw)
In-Reply-To: <CAJCQCtQ1HKOz6Wun4qM_3jDXJSeUs4g4dKmUp0NMF2NMq4AAog@mail.gmail.com>

On Sat, Jan 30, 2021 at 11:48 AM Chris Murphy <lists@colorremedies.com> wrote:

> Bug 1921923 - Kernel under-reporting or hiding about a third of
> available memory in "debug" 5.11 series
> https://bugzilla.redhat.com/show_bug.cgi?id=1921923

Looks like it's newy enabled CONFIG_KASAN options. The issue doesn't
happen when these are disabled:

-CONFIG_KASAN_SHADOW_OFFSET=0xdffffc0000000000
-CONFIG_KASAN=y
-CONFIG_KASAN_GENERIC=y
-CONFIG_KASAN_INLINE=y
-CONFIG_KASAN_STACK=1
-CONFIG_KASAN_VMALLOC=y

-- 
Chris Murphy


  reply	other threads:[~2021-01-30 23:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-30 18:48 5.11 "debug" missing 20-30% memory, and exceptionally high reserved Chris Murphy
2021-01-30 23:21 ` Chris Murphy [this message]
2021-02-01 11:08   ` David Hildenbrand

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAJCQCtS8fXCVsyvoRW24pxZm56wMwQyOei5P9BLYFt9FHhwy7w@mail.gmail.com \
    --to=lists@colorremedies.com \
    --cc=linux-mm@kvack.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).