[Bug 922754] Re: booting without --no-log causes init and plymouth-upstart-bridge to spin at 100%
Steve Langasek
steve.langasek at canonical.com
Mon Jan 30 05:13:11 UTC 2012
Hi James,
On Sat, Jan 28, 2012 at 10:34:25AM -0000, James Hunt wrote:
> @Stefan: I've updated the upstart-testing PPA with upstart -
> 1.4-0ubuntu5:
> https://launchpad.net/~jamesodhunt/+archive/upstart-
> testing/+packages
> This backs out a late change which I suspect might be the cause of this
> problem. Please could you try this version once it has built.
I've been able to reproduce the problem when booting -0ubuntu4 here with
--log, and I'm afraid the problem is also still reproducible with the
-0ubuntu5 package from your ppa. Will try to find a minimal reproducer for
this issue.
--
Steve Langasek Give me a lever long enough and a Free OS
Debian Developer to set it on, and I can move the world.
Ubuntu Developer http://www.debian.org/
slangasek at ubuntu.com vorlon at debian.org
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https://bugs.launchpad.net/bugs/922754
Title:
booting without --no-log causes init and plymouth-upstart-bridge to
spin at 100%
Status in “upstart” package in Ubuntu:
Incomplete
Bug description:
Release: Precise
Architecture: amd64
Likely broken since upstart_1.4-0ubuntu3
When booting after recent updates I see init and plymouth-upstart-
bridge spinning at 100% CPU time, defunct processes do not get reaped
and a console on ttyS1 which is supposed to start, does not come up.
Looking at strace of plymouth-upstart-bridge it seems to run a tight loop of
epoll_wait(3, {}, 64, 0) = 0 (/proc/1383/fd/3 -> anon_inode:[eventpoll])
and init does another tight loop of
read(24, 0x7ffdc2d1caa0, 8192) = -1 EAGAIN (Resource temporarily unavailable)
(/proc/1/fd/24 -> /dev/ptmx)
Booting with --no-log on the grub commandline brings the system up
without showing any problems.
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