Re: hang while updating pkg_rolling-replace libvdpau

[Riccardo Mottola <riccardo.mottola%libero.it@localhost>]

Hi David,


David Shao wrote:
> Examine recently posted
>
> kern/55641: Recent changes to random/entropy "pkgsrc devel brick" an
> Intel Ivy Bridge system, with workaround

It mentions a workaround, but what does it mean to:
dd if=/dev/urandom of=/dev/random bs=32 count=1
sysctl -w kern.entropy.consolidate=1

copy some data from one random generator to another one? Before doing so 
I want to know it is fine :)

> Try Ctrl-C after the hang. Is there at the bottom of the trace a call
> to a random number function?

no, see below.

> Do you have something like an Intel Ivy Bridge system?

No, it is an older CPU, it should be a Penryn:


[     1.000003] cpu0 at mainbus0 apid 0
[     1.000003] cpu0: Use lfence to serialize rdtsc
[     1.000003] cpu0: Intel(R) Core(TM)2 Duo CPU     T6670  @ 2.20GHz, 
id 0x1067a
[     1.000003] cpu0: node 0, package 0, core 0, smt 0
[     1.000003] cpu1 at mainbus0 apid 1
[     1.000003] cpu1: Intel(R) Core(TM)2 Duo CPU     T6670  @ 2.20GHz, 
id 0x1067a
[     1.000003] cpu1: node 0, package 0, core 1, smt 0


> Are you getting some warning message on boot about entropy?

Yes, I see two warnings:

disc$ dmesg | grep entro
[     1.000000] entropy: no seed from bootloader
[ 40596.326165] entropy: WARNING: extracting entropy too early




If I hit ctrl-c I see something inside meson and python and the last is 
a random function. So there is probably some similarity.

sudo make replace
^CTraceback (most recent call last):
  File "/usr/pkg/bin/meson", line 11, in <module>
    load_entry_point('meson==0.55.1', 'console_scripts', 'meson')()
  File 
"/usr/pkg/lib/python3.7/site-packages/pkg_resources/__init__.py", line 
489, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File 
"/usr/pkg/lib/python3.7/site-packages/pkg_resources/__init__.py", line 
2852, in load_entry_point
    return ep.load()
  File 
"/usr/pkg/lib/python3.7/site-packages/pkg_resources/__init__.py", line 
2443, in load
    return self.resolve()
  File 
"/usr/pkg/lib/python3.7/site-packages/pkg_resources/__init__.py", line 
2449, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/pkg/lib/python3.7/site-packages/mesonbuild/mesonmain.py", 
line 25, in <module>
    from . import mconf, mdist, minit, minstall, mintro, msetup, mtest, 
rewriter, msubprojects, munstable_coredata, mcompile
  File "/usr/pkg/lib/python3.7/site-packages/mesonbuild/minstall.py", 
line 22, in <module>
    from .mtest import rebuild_all
  File "/usr/pkg/lib/python3.7/site-packages/mesonbuild/mtest.py", line 
26, in <module>
    import multiprocessing
  File "/usr/pkg/lib/python3.7/multiprocessing/__init__.py", line 16, 
in <module>
    from . import context
  File "/usr/pkg/lib/python3.7/multiprocessing/context.py", line 5, in 
<module>
    from . import process
  File "/usr/pkg/lib/python3.7/multiprocessing/process.py", line 363, 
in <module>
    _current_process = _MainProcess()
  File "/usr/pkg/lib/python3.7/multiprocessing/process.py", line 347, 
in __init__
    self._config = {'authkey': AuthenticationString(os.urandom(32)),
KeyboardInterrupt