Bug#922737: lintian rarely hangs
Hi Helmut,
I have also had this problem since December and hoped no one would
notice. Personally, I think it is related to Perl 5.28.1-3, but I am
not sure.
We also recently added a parallel collection that may have a race
condition. I will look at it in the coming days. Thank you for your
diligence in reporting this.
Kind regards,
Felix Lechner
On Tue, Feb 19, 2019 at 9:15 PM Helmut Grohne <helmut@subdivi.de> wrote:
>
> Package: lintian
> Version: 2.6.0
> Severity: important
> User: helmutg@debian.org
> Usertags: rebootstrap
>
> I use lintian to detect wrongly cross built packages. In this setup,
> lintian is run by sbuild inside the (unstable) schroot after the build.
> I pass "-T
> binary-from-other-architecture,triplet-dir-and-architecture-mismatch" to
> lintian and it all works fine ... most of the time.
>
> In roughly 1/2000 builds, lintian hangs. Now the bad part is that I have
> little details on what is going on here.
>
> * A process list shows just "lintian" without any command line flags.
> * lintian has a zombie chiled called "[rm]".
> * lintian has the following file descriptors:
> + 0 is /dev/null inherited from the sbuild invocation
> + 1 and 2 are the same writable pipe (presumably to sbuild)
> + 3 is /dev/null (inside the schroot) for writing
> + 4 and 5 are the read and write ends of a pipe
> + 6 is /usr/share/perl5/Net/DNS/Resolver/Base.pm inside the schroot
> * It already happend with 2.6.0 and continues to happen with 2.7.0.
> * Attaching the hanging lintian with strace only yields
> restart_syscall.
>
> Given the 1/2000 builds nature, it takes a while (days) to reproduce.
> I'll leave one such hanging process around for a while in case you have
> ideas on how to debug this.
>
> Helmut
>
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