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

[Jim4Prez]

Just posting information on the fix.  This bug affected me as well.
However it was not with the POWER_SUPPLY_MODEL_NAME.  Every time I would
unplug and plugin my laptop I would get 100% CPU usage from upstart-
udev-bridge.

The garbage characters are in the value of the model name for this Sanyo
battery.

0003760 012 120 117 127 105 122 137 123 125 120 120 114 131 137 115 117
         \n   P   O   W   E   R   _   S   U   P   P   L   Y   _   M   O
0004000 104 105 114 137 116 101 115 105 075 060 021 060 052 171 206 012
          D   E   L   _   N   A   M   E   =   0 021   0   *   y 206  \n

I have applied the fix and restarted upstart-udev-bridge and the issue
has not appeard again, even after rapidly unpluging and pluging in the
power supply.  Attached is just the output for the add event for the
power supply.

Thanks for the fix.

** Attachment added: "udev_upstart.txt"
   https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/829980/+attachment/2972362/+files/udev_upstart.txt

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

Status in Upstart:
  Fix Released
Status in “linux” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  Fix Released

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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