Bug#851581: apt: Reading package lists...Bus error

[Andreas Beckmann <anbe@debian.org>]

Hi David,

thanks for your input.

On 2017-01-18 23:48, David Kalnischkies wrote:
> - "Non-existent address". Kinda possible, althrough the insistence on
>   "physical" vs "virtual" (which would be a Segfault) is telling.

> - "Unaligned access". Certainly possible, expect that I guess piuparts
>   runs on amd64/i386 which makes this impossible as this class does not

correct, it's an amd64 host with both amd64 and i386 chroots

> - "Paging errors". Quoting wikipedia: "[…] or because a just-created
>   memory-mapped file cannot be physically allocated, because the disk is
>   full." That sounds for me like the most likely scenario actually as
>   our binary caches are 'just-created memory-mapped files' which
>   depending on your sources can have a non-trivial amount of size so
>   perhaps that is really a run out of free space (mine are both >= 100
>   MB).

That one sounds most likely, with about a dozen of piuparts tests
running in parallel in a big tmpfs I sometimes run out of space
(something like testing texlive-full several times in parallel), and
this could be just a different way of saying "disk full".

If this happens more often, I'll add it to the list of "disk full"
strings being grepped for, that filter out bogus failures and trigger
retesting.


Andreas