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From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
To: ludo@gnu.org (Ludovic Courtès)
Cc: 24028@debbugs.gnu.org
Subject: bug#24028: Linux-libre kernel does not build deterministically
Date: Fri, 09 Oct 2020 17:17:03 -0400	[thread overview]
Message-ID: <87imbjqeuo.fsf@gmail.com> (raw)
In-Reply-To: <87lh0xfsq2.fsf@gnu.org> ("Ludovic Courtès"'s message of "Tue, 19 Jul 2016 19:22:29 +0200")

Hello,

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>.
>
> Ludo’.

I just tested with linux-libre 5.8.10, and it still suffers from
reproducibility problems, but only for one file:

--8<---------------cut here---------------start------------->8---
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
--8<---------------cut here---------------end--------------->8---

So, we're not far!

Maxim




  reply	other threads:[~2020-10-09 21:18 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-19 17:22 bug#24028: Linux-libre kernel does not build deterministically Ludovic Courtès
2020-10-09 21:17 ` Maxim Cournoyer [this message]
2021-09-14 11:59   ` zimoun
2021-11-21 14:12     ` Maxim Cournoyer
2021-05-17 18:38 ` Bone Baboon via Bug reports for GNU Guix

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