bug#24028: closed (Linux-libre kernel does not build deterministically)

[GNU bug Tracking System]

Your message dated Sun, 21 Nov 2021 09:12:34 -0500
with message-id <87y25hbnsd.fsf@gmail.com>
and subject line Re: bug#24028: Linux-libre kernel does not build 
deterministically
has caused the debbugs.gnu.org bug report #24028,
regarding Linux-libre kernel does not build deterministically
to be marked as done.

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-- 
24028: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24028
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> --- Begin Message ---
>
>
>
> Subject: 
>
> Linux-libre kernel does not build deterministically
>
>
>
>
> Date: 
>
> Tue, 19 Jul 2016 19:22:29 +0200
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)
>
>
>
>
> As of version 4.6.4, Linux-libre does not build reproducibly:
>
> --8<---------------cut here---------------start------------->8---
> $ guix challenge linux-libre
> /gnu/store/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4 contents differ:
>   local hash: 1py214sd42qcq8l429m4zf4aibp8rl68kpkrzqi1nn65vnbxsx11
>   https://hydra.gnu.org/nar/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4: 
> 19hsdsjy5i9nfc1g28s074znzimzhylgkdpwz435j301sn9pxxp9
> $ wget -q -O - 
> https://hydra.gnu.org/nar/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4 | 
> bunzip2 | guix archive -x t
> $ diff -ur --no-dereference 
> /gnu/store/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4 /tmp/t
> Binary files 
> /gnu/store/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4/bzImage and 
> /tmp/t/bzImage differ
> --8<---------------cut here---------------end--------------->8---
>
> Apparently people are working on it:
> <https://wiki.debian.org/SameKernel>.
>
> Ludo’.
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#24028: Linux-libre kernel does not build deterministically
>
>
>
>
> Date: 
>
> Sun, 21 Nov 2021 09:12:34 -0500
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux)
>
>
>
>
> Hello,
>
> zimoun <zimon.toutoune@gmail.com> writes:
>
> > Hi,
> >
> > On Fri, 09 Oct 2020 at 17:17, Maxim Cournoyer <maxim.cournoyer@gmail.com> 
> > wrote:
> >> ludo@gnu.org (Ludovic Courtès) writes:
> >>
> >>> As of version 4.6.4, Linux-libre does not build reproducibly:
> >>>
> >>> $ guix challenge linux-libre
> >>> /gnu/store/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4 contents 
> >>> differ:
> >>>   local hash: 1py214sd42qcq8l429m4zf4aibp8rl68kpkrzqi1nn65vnbxsx11
> >>>   
> >>> https://hydra.gnu.org/nar/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4:
> >>> 19hsdsjy5i9nfc1g28s074znzimzhylgkdpwz435j301sn9pxxp9
> >>> $ wget -q -O -
> >>> https://hydra.gnu.org/nar/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4
> >>> | bunzip2 | guix archive -x t
> >>> $ diff -ur --no-dereference 
> >>> /gnu/store/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4 /tmp/t
> >>> Binary files 
> >>> /gnu/store/wkdnd1dcgljr0jxmd3li8j0qsr2zwrci-linux-libre-4.6.4/bzImage and 
> >>> /tmp/t/bzImage differ
> >>>
> >>> Apparently people are working on it:
> >>> <https://wiki.debian.org/SameKernel>.
> >>
> >> I just tested with linux-libre 5.8.10, and it still suffers from
> >> reproducibility problems, but only for one file:
> >>
> >> diff -r 
> >> /gnu/store/jc1dydmax5sdfljpi5mq5dhq9wdr92xy-linux-libre-5.8.10{,-check}
> >> Binary files 
> >> /gnu/store/jc1dydmax5sdfljpi5mq5dhq9wdr92xy-linux-libre-5.8.10/bzImage and 
> >> /gnu/store/jc1dydmax5sdfljpi5mq5dhq9wdr92xy-linux-libre-5.8.10-check/bzImage 
> >> differ
> >
> > Still the same issue with 5.13.15.
> >
> > diff -r --no-dereference 
> > /gnu/store/y9r7physjpa23znb7r6rg38wpmxrkp0s-linux-libre-5.13.15{,-check}
> > Binary files 
> > /gnu/store/y9r7physjpa23znb7r6rg38wpmxrkp0s-linux-libre-5.13.15/bzImage and 
> > /gnu/store/y9r7physjpa23znb7r6rg38wpmxrkp0s-linux-libre-5.13.15-check/bzImage 
> > differ
>
> Fixed in 01ea70a29c on core-updates-frozen, after taking hints from
> https://lwn.net/Articles/841624/.
>
> Thanks,
>
> Closing.
>
> Maxim
>
>
> --- End Message ---