Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: pulseaudio (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1074968
Title:
Pulseaudio leading to rtkit making hard kernel lock-up
Status in “pulseaudio” package in Ubuntu:
Confirmed
Bug description:
After upgrading to 12.10 it takes about five minutes to boot my system
while the system load goes crazy and unity occasionally crashes once
or twice in the process. Looking at my syslog the only syspicious
lines is
Nov 4 20:30:58 zelito rtkit-daemon[2524]: The canary thread is apparently
starving. Taking action.
Nov 4 20:30:58 zelito rtkit-daemon[2524]: Demoting known real-time threads.
Nov 4 20:30:58 zelito rtkit-daemon[2524]: Successfully demoted thread 10780
of process 10774 (n/a).
Nov 4 20:30:58 zelito rtkit-daemon[2524]: Successfully demoted thread 10779
of process 10774 (n/a).
Nov 4 20:30:58 zelito rtkit-daemon[2524]: Successfully demoted thread 10774
of process 10774 (n/a).
Nov 4 20:30:58 zelito rtkit-daemon[2524]: Demoted 3 threads.
These lines repeat about 20 times and end up with a kernel lock-up
Nov 4 20:31:48 zelito rtkit-daemon[2524]: Demoted 3 threads.
Nov 4 20:31:49 zelito kernel: [ 373.910966] ------------[ cut here
]------------
Nov 4 20:31:49 zelito kernel: [ 373.910974] WARNING: at
/build/buildd/linux-3.5.0/kernel/watchdog.c:242
watchdog_overflow_callback+0x9a/0xc0()
Nov 4 20:31:49 zelito kernel: [ 373.910975] Hardware name: NBLBX
Nov 4 20:31:49 zelito kernel: [ 373.910976] Watchdog detected hard LOCKUP
on cpu 0
Nov 4 20:31:49 zelito kernel: [ 373.910977] Modules linked in: snd_hrtimer
pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) dm_crypt coretemp
arc4 tpm_infineon psmouse kvm snd_hda_codec_hdmi hp_wmi sparse_keymap
snd_hda_codec_realtek uvcvideo videobuf2_core videodev videobuf2_vmalloc
videobuf2_memops snd_hda_intel snd_hda_codec snd_hwdep snd_pcm microcode
snd_seq_midi snd_rawmidi serio_raw ath9k snd_seq_midi_event i7core_edac snd_seq
edac_core mac80211 snd_timer ath9k_common snd_seq_device ath9k_hw ath fglrx(PO)
intel_ips lpc_ich cfg80211 mei snd soundcore snd_page_alloc tpm_tis rfcomm bnep
parport_pc bluetooth ppdev mac_hid lp parport binfmt_misc vesafb hid_generic
usbhid hid r8169 wmi video
Nov 4 20:31:49 zelito kernel: [ 373.911020] Pid: 16187, comm:
unity-music-dae Tainted: P O 3.5.0-18-generic #29-Ubuntu
Nov 4 20:31:49 zelito kernel: [ 373.911021] Call Trace:
Nov 4 20:31:49 zelito kernel: [ 373.911023] <NMI> [<ffffffff81051c1f>]
warn_slowpath_common+0x7f/0xc0
Nov 4 20:31:49 zelito kernel: [ 373.911031] [<ffffffff81051d16>]
warn_slowpath_fmt+0x46/0x50
Nov 4 20:31:49 zelito kernel: [ 373.911035] [<ffffffff810de160>] ?
touch_nmi_watchdog+0x80/0x80
Nov 4 20:31:49 zelito kernel: [ 373.911038] [<ffffffff810de1fa>]
watchdog_overflow_callback+0x9a/0xc0
Nov 4 20:31:49 zelito kernel: [ 373.911043] [<ffffffff8111a40d>]
__perf_event_overflow+0x9d/0x230
Nov 4 20:31:49 zelito kernel: [ 373.911048] [<ffffffff810240c7>] ?
x86_perf_event_set_period+0xd7/0x160
Nov 4 20:31:49 zelito kernel: [ 373.911051] [<ffffffff8111af24>]
perf_event_overflow+0x14/0x20
Nov 4 20:31:49 zelito kernel: [ 373.911054] [<ffffffff81029453>]
intel_pmu_handle_irq+0x193/0x310
Nov 4 20:31:49 zelito kernel: [ 373.911059] [<ffffffff8168505d>]
perf_event_nmi_handler+0x1d/0x20
Nov 4 20:31:49 zelito kernel: [ 373.911062] [<ffffffff81684801>]
nmi_handle.isra.0+0x51/0x80
Nov 4 20:31:49 zelito kernel: [ 373.911065] [<ffffffff81684910>]
do_nmi+0xe0/0x360
Nov 4 20:31:49 zelito kernel: [ 373.911067] [<ffffffff81683e3c>]
end_repeat_nmi+0x1a/0x1e
Nov 4 20:31:49 zelito kernel: [ 373.911069] <<EOE>>
Nov 4 20:31:49 zelito kernel: [ 373.911071] ---[ end trace 70e4a0a58141ab52
]---
I'm reporting it against pulseaudio since process 10774 which is the
last demoted every time is pulseaudio. It seems not to be the first
time this has happened, but the bug does not get a lot of attention:
http://ubuntuforums.org/archive/index.php/t-1874171.html
https://bugs.freedesktop.org/show_bug.cgi?id=45241
There is even an old (abandoned?) branch which seems to have tried to address
this issue:
https://code.launchpad.net/~awe/pulseaudio/rtkit-conflicts
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: pulseaudio 1:2.1-0ubuntu4
ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
Uname: Linux 3.5.0-18-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: zilvador 10774 F.... pulseaudio
/dev/snd/controlC0: zilvador 10774 F.... pulseaudio
Date: Sun Nov 4 21:01:43 2012
InstallationDate: Installed on 2010-11-13 (721 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MarkForUpload: True
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to quantal on 2012-10-19 (16 days ago)
dmi.bios.date: 08/23/2010
dmi.bios.vendor: Insyde
dmi.bios.version: F.05
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: NBLBX
dmi.board.vendor: Compal
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Compal
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnInsyde:bvrF.05:bd08/23/2010:svnCompal:pnNBLBX:pvrF.01:rvnCompal:rnNBLBX:rvrBaseBoardVersion:cvnCompal:ct10:cvrChassisVersion:
dmi.product.name: NBLBX
dmi.product.version: F.01
dmi.sys.vendor: Compal
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