Groups > linux.debian.user > #195987

Re: lightdm (testing): Long waiting time after login

From	Dino <work@hllmnn.de>
Newsgroups	linux.debian.user
Subject	Re: lightdm (testing): Long waiting time after login
Date	2018-05-22 10:00 +0200
Message-ID	<vSan7-44k-7@gated-at.bofh.it> (permalink)
References	(6 earlier) <vQO5j-3dW-1@gated-at.bofh.it> <vQVJv-87A-9@gated-at.bofh.it> <vQWYV-nz-1@gated-at.bofh.it> <vQYxH-1pm-9@gated-at.bofh.it> <vRJGh-4xU-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 21.05.2018 05:25 Ben Caradoc-Davies wrote:
> On 19/05/18 13:07, Ben Caradoc-Davies wrote:
>> On 19/05/18 11:28, Ben Caradoc-Davies wrote:
>>> The cause is xfce4-session. I will file a bug report.
>> Bug#899080: xfce4-session hangs in getrandom if crng not ready
>> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=899080
>> I think this is a symptom of Bug#898088 in libbsd0:
>> Bug#898088: arc4random_buf() may block for a long time
>> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=898088
>> xfce4-session uses IceGenerateMagicCookie and thus arc4random_buf to 
>> generate MIT-MAGIC-COOKIE-1.
>
> Fixed in libbsd/0.8.7-1.1 on unstable:
> https://tracker.debian.org/news/958795/accepted-libbsd-087-11-source-into-unstable/ 
>
> "Switch Linux getrandom() usage to non-blocking mode, continuing to 
> use fallback mechanims if unsuccessful. Closes: #898088"
>
> I installed libbsd0_0.8.7-1.1_amd64.deb on a buster VM and it no 
> longer hangs after lightdm credentials are entered (the xfce4-session 
> hang reported in #899080):
> http://ftp.debian.org/debian/pool/main/libb/libbsd/libbsd0_0.8.7-1.1_amd64.deb 
>
>
> Packages for other architectures here:
> http://ftp.debian.org/debian/pool/main/libb/libbsd
>
> Kind regards,
>
Hi Ben,

I can confirm that libbsd/0.8.7-1.1 fixes the problem here, too.

Thanks a lot for your investigation!

Best,
Dino

Thread

Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-17 00:50 +0200
  Re: lightdm (testing): Long waiting time after login Dino <work@hllmnn.de> - 2018-05-17 11:10 +0200
    Re: lightdm (testing): Long waiting time after login Curt <curty@free.fr> - 2018-05-17 12:10 +0200
    Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-18 01:10 +0200
      Re: lightdm (testing): Long waiting time after login Dino <work@hllmnn.de> - 2018-05-18 08:50 +0200
        Re: lightdm (testing): Long waiting time after login songbird <songbird@anthive.com> - 2018-05-18 12:10 +0200
          Re: lightdm (testing): Long waiting time after login Dino <work@hllmnn.de> - 2018-05-18 16:00 +0200
            Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-19 00:10 +0200
              Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-19 01:30 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-19 03:10 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-21 05:30 +0200
                Re: lightdm (testing): Long waiting time after login Dino <work@hllmnn.de> - 2018-05-22 10:00 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-23 00:50 +0200
                Re: lightdm (testing): Long waiting time after login Glenn English <ghe2001@gmail.com> - 2018-05-23 18:50 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-24 00:20 +0200
                Re: lightdm (testing): Long waiting time after login Glenn English <ghe2001@gmail.com> - 2018-05-24 15:50 +0200
                Re: lightdm (testing): Long waiting time after login Ben Caradoc-Davies <ben@transient.nz> - 2018-05-25 00:30 +0200

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