[Bug 680444] Re: dbus-daemon eats 100% cpu and is not responsive

[Peter]

I have similar symptoms ... running Kubuntu 11.04 64 bit on quad core.
Sometimes dbus maxes out a CPU when kmail is checking for mail, but other times it doesn't seem to be associated with kmail.

Sometimes, killing the dbus process that is using 100% of CPU causes
screen to blank and keyboard to be unresponsive.  In those cases, I
could ssh in from another box, and shut down the machine.

Usually when dbus has maxed out a CPU, it is difficult to bring up a
konsole terminal, and it times out instead of opening.

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https://bugs.launchpad.net/bugs/680444

Title:
  dbus-daemon eats 100% cpu and is not responsive

Status in “dbus” package in Ubuntu:
  Fix Released

Bug description:
  Binary package hint: dbus

  strace shows the following:

  sudo strace -p 1464
  Process 1464 attached - interrupt to quit
  clock_gettime(CLOCK_MONOTONIC, {349519, 662737789}) = 0
  poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN}, {fd=8, events=POLLIN}, {fd=9, events=POLLIN}, {fd=12, events=POLLIN}, {fd=13, events=POLLIN}, {fd=15, events=POLLIN}, {fd=17, events=POLLIN}, {fd=16, events=POLLIN}, {fd=18, events=POLLIN}, {fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=14, events=POLLIN}, {fd=22, events=POLLIN}, {fd=21, events=POLLIN}, {fd=25, events=POLLIN}, {fd=24, events=POLLIN}, {fd=26, events=POLLIN}, {fd=27, events=POLLIN}, {fd=29, events=POLLIN}, {fd=23, events=POLLIN}, {fd=31, events=POLLIN}, {fd=32, events=POLLIN}, {fd=33, events=POLLIN}, {fd=34, events=POLLIN}, {fd=35, events=POLLIN}, {fd=36, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=37, events=POLLIN}, {fd=42, events=POLLIN}, ...], 1018, -1) = 1 ([{fd=3, revents=POLLIN}])
  clock_gettime(CLOCK_MONOTONIC, {349519, 664920388}) = 0
  accept4(3, 0xbfcd9aac, [16], SOCK_CLOEXEC) = -1 EMFILE (Too many open files)
  fcntl64(-1, F_GETFD)                    = -1 EBADF (Bad file descriptor)
  clock_gettime(CLOCK_MONOTONIC, {349519, 665068808}) = 0
  poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN}, {fd=8, events=POLLIN}, {fd=9, events=POLLIN}, {fd=12, events=POLLIN}, {fd=13, events=POLLIN}, {fd=15, events=POLLIN}, {fd=17, events=POLLIN}, {fd=16, events=POLLIN}, {fd=18, events=POLLIN}, {fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=14, events=POLLIN}, {fd=22, events=POLLIN}, {fd=21, events=POLLIN}, {fd=25, events=POLLIN}, {fd=24, events=POLLIN}, {fd=26, events=POLLIN}, {fd=27, events=POLLIN}, {fd=29, events=POLLIN}, {fd=23, events=POLLIN}, {fd=31, events=POLLIN}, {fd=32, events=POLLIN}, {fd=33, events=POLLIN}, {fd=34, events=POLLIN}, {fd=35, events=POLLIN}, {fd=36, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=37, events=POLLIN}, {fd=42, events=POLLIN}, ...], 1018, -1) = 1 ([{fd=3, revents=POLLIN}])
  clock_gettime(CLOCK_MONOTONIC, {349519, 667222733}) = 0
  accept4(3, 0xbfcd9aac, [16], SOCK_CLOEXEC) = -1 EMFILE (Too many open files)
  fcntl64(-1, F_GETFD)                    = -1 EBADF (Bad file descriptor)
  .................

  System info:
  Kubuntu 10.10
  ubuntu-bug does not work by the way because it tries to connect to dbus

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