[Bug 829980] Re: upstart-udev-bridge eats 100% cpu calling dbus_message_iter_append_basic()

James Hunt 829980 at bugs.launchpad.net
Tue Nov 8 15:34:48 UTC 2011


I am working on the fix for this now. However, to ensure we fully
understand the problem, please could those seeing this problem attach
file /var/log/udev to this bug so I can see the raw data.

By the way, if you simply 'cat' the file(s), you won't necessarily see
the extended characters since as they are generally not printable, the
terminal driver won't display them. However, you can detect them by
doing something like:

    grep "[^[:print:]]" /var/log/udev /proc/acpi/battery/BAT0/info

Or if you want to see them:

    grep "[^[:print:]]" /var/log/udev /proc/acpi/battery/BAT0/info | od
-xc

Vim also highlights extended chars by default.

** Changed in: upstart (Ubuntu)
       Status: Triaged => In Progress

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https://bugs.launchpad.net/bugs/829980

Title:
  upstart-udev-bridge eats 100% cpu calling
  dbus_message_iter_append_basic()

Status in “linux” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  In Progress

Bug description:
  the segv was created by me sending a kill -11. but the 100% cpu is
  unbarable

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: upstart 1.3-0ubuntu6
  ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
  Uname: Linux 3.0.0-8-generic x86_64
  NonfreeKernelModules: fglrx
  Architecture: amd64
  Date: Sat Aug 20 11:48:34 2011
  ExecutablePath: /sbin/upstart-udev-bridge
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64+mac (20110803.1)
  ProcCmdline: upstart-udev-bridge --daemon
  ProcEnviron: PATH=(custom, no user)
  Signal: 11
  SourcePackage: upstart
  StacktraceTop:
   ?? () from /lib/x86_64-linux-gnu/libc.so.6
   ?? () from /lib/x86_64-linux-gnu/libdbus-1.so.3
   ?? () from /lib/x86_64-linux-gnu/libdbus-1.so.3
   dbus_message_iter_append_basic () from /lib/x86_64-linux-gnu/libdbus-1.so.3
   ?? ()
  Title: upstart-udev-bridge crashed with SIGSEGV in dbus_message_iter_append_basic()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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