Re: Warning from free_init_pages with large initrd

From	Sitsofe Wheeler <sitsofe@gmail.com>
Newsgroups	linux.kernel
Subject	Re: Warning from free_init_pages with large initrd
Date	2016-09-26 19:30 +0200
Message-ID	<slHT3-6G2-19@gated-at.bofh.it> (permalink)
References	<skXGx-388-11@gated-at.bofh.it> <sltGp-6hS-1@gated-at.bofh.it> <slxAm-h3-7@gated-at.bofh.it> <slxTI-rD-3@gated-at.bofh.it>
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On 26 September 2016 at 07:47, H. Peter Anvin <hpa@zytor.com> wrote:
> On September 25, 2016 11:22:04 PM PDT, Sitsofe Wheeler <sitsofe@gmail.com> wrote:
>>On 26 September 2016 at 03:14, H. Peter Anvin <hpa@zytor.com> wrote:
>>> On 09/24/16 08:32, Sitsofe Wheeler wrote:
>>>>
>>>> While trying to PXE boot a Fedora LiveISO on VMware ESXi the kernel
>>>> throws the following warning:
>>>>
>>> [...]
>>>>
>>>> The initrd is big because it holds all the files in the ISO (see
>>>> https://fedorahosted.org/cobbler/wiki/HowToPxeAnyLiveCd for how it
>>was
>>>> made).
>>>
>>> How big is big?
>>
>>The one that matches that backtrace is 1385 Mbytes and was made from a
>>Fedora rawhide ISO. Here are some sizes in megabytes from different
>>versions of Fedora:
>>960   20/initrd0.img
>>1416 21/initrd0.img
>>1379 22/initrd0.img
>>1430 23/initrd0.img
>>1492 24/initrd.img

> And they all fail?
From at least 23 onwards they all continue to boot but give the
previously mentioned warning in dmesg output.

> Also, is this BIOS or EFI?
Booting from BIOS, not EFI.

> Also: compressed or uncompressed (if it makes a difference?)

file reports the following
20 initrd starts with a gzip header
21-23 initrds start with a cpio header
24 and rawhide initrd starts with an xz header

Looking at livecd-iso-to-pxeboot it seems that the CD's contents is
turned into a gzip'd cpio and then concatenated on the end of the
usual initrd...

-- 
Sitsofe | http://sucs.org/~sits/

Thread

Warning from free_init_pages with large initrd Sitsofe Wheeler <sitsofe@gmail.com> - 2016-09-24 18:10 +0200
  Re: Warning from free_init_pages with large initrd "H. Peter Anvin" <hpa@zytor.com> - 2016-09-26 04:20 +0200
    Re: Warning from free_init_pages with large initrd Sitsofe Wheeler <sitsofe@gmail.com> - 2016-09-26 08:30 +0200
      Re: Warning from free_init_pages with large initrd "H. Peter Anvin" <hpa@zytor.com> - 2016-09-26 08:50 +0200
        Re: Warning from free_init_pages with large initrd Sitsofe Wheeler <sitsofe@gmail.com> - 2016-09-26 19:30 +0200
          Re: Warning from free_init_pages with large initrd Randy Dunlap <rdunlap@infradead.org> - 2016-09-26 21:10 +0200
            Re: Warning from free_init_pages with large initrd Sitsofe Wheeler <sitsofe@gmail.com> - 2016-09-27 12:30 +0200
              Re: Warning from free_init_pages with large initrd "Richard W.M. Jones" <rjones@redhat.com> - 2016-09-27 15:00 +0200
              Re: Warning from free_init_pages with large initrd "H. Peter Anvin" <hpa@zytor.com> - 2016-09-27 20:50 +0200
                Re: Warning from free_init_pages with large initrd Sitsofe Wheeler <sitsofe@gmail.com> - 2016-09-27 23:30 +0200
      Re: Warning from free_init_pages with large initrd "H. Peter Anvin" <hpa@zytor.com> - 2016-09-26 08:50 +0200

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