Triggered a reboot:
Nov 22 11:34:38 Philinux kernel: [ 106.085237] __ratelimit: 3 callbacks suppressed
Nov 22 11:34:38 Philinux kernel: [ 106.085250] python[1917]: segfault at 900c0c ip 0808e110 sp bf8c0530 error 4 in python2.6[8048000+1d3000]
Nov 22 11:38:10 Philinux kernel: imklog 4.2.0, log source = /var/run/rsyslog/kmsg started.
Triggered a reboot:
Nov 22 11:39:35 Philinux kernel: [ 113.942371] __ratelimit: 3 callbacks suppressed
Nov 22 11:39:35 Philinux kernel: [ 113.942385] deskbar-applet[2308]: segfault at c35d5f9e ip 00d1ade7 sp bfafe724 error 5 in libc-2.10.1.so[c14000+13e000]
Nov 22 11:40:03 Philinux kernel: [ 142.089533] BUG: Bad page map in process apport-checkrep pte:00c92025 pmd:32b91067
Nov 22 11:40:03 Philinux kernel: [ 142.089549] page:c104b240 flags:00000004 count:0 mapcount:-1 mapping:(null) index:0
Nov 22 11:40:03 Philinux kernel: [ 142.089559] addr:002e0000 vm_flags:08000075 anon_vma:(null) mapping:f6db833c index:df
Nov 22 11:40:03 Philinux kernel: [ 142.089574] vma->vm_ops->fault: filemap_fault+0x0/0x340
Nov 22 11:40:03 Philinux kernel: [ 142.089582] vma->vm_file->f_op->mmap: generic_file_mmap+0x0/0x50
Nov 22 11:40:03 Philinux kernel: [ 142.089591] Pid: 2988, comm: apport-checkrep Tainted: P 2.6.31-15-generic #50-Ubuntu
Nov 22 11:40:03 Philinux kernel: [ 142.089598] Call Trace:
Nov 22 11:40:03 Philinux kernel: [ 142.089613] [<c01c8a89>] print_bad_pte+0x139/0x1f0
Nov 22 11:40:03 Philinux kernel: [ 142.089622] [<c01ca5e7>] zap_pte_range+0x3d7/0x3e0
Nov 22 11:40:03 Philinux kernel: [ 142.089631] [<c01ca866>] unmap_vmas+0x186/0x350
Nov 22 11:40:03 Philinux kernel: [ 142.089640] [<c01cf780>] exit_mmap+0xa0/0x160
Nov 22 11:40:03 Philinux kernel: [ 142.089651] [<c014361e>] mmput+0x2e/0xa0
Nov 22 11:40:03 Philinux kernel: [ 142.089659] [<c0147bb2>] exit_mm+0xe2/0x120
Nov 22 11:40:03 Philinux kernel: [ 142.089667] [<c0147ddc>] do_exit+0xfc/0x2e0
Nov 22 11:40:03 Philinux kernel: [ 142.089676] [<c01527dd>] ? dequeue_signal+0x2d/0x170
Nov 22 11:40:03 Philinux kernel: [ 142.089685] [<c0161dab>] ? sched_clock_cpu+0xeb/0x1a0
Nov 22 11:40:03 Philinux kernel: [ 142.089693] [<c0147ffa>] do_group_exit+0x3a/0xb0
Nov 22 11:40:03 Philinux kernel: [ 142.089702] [<c015403f>] get_signal_to_deliver+0x18f/0x300
Nov 22 11:40:03 Philinux kernel: [ 142.089712] [<c03b27b8>] ? scsi_finish_command+0x98/0x100
Nov 22 11:40:03 Philinux kernel: [ 142.089721] [<c010304b>] do_signal+0x6b/0x160
Nov 22 11:40:03 Philinux kernel: [ 142.089730] [<c0152f88>] ? send_signal+0x38/0x70
Nov 22 11:40:03 Philinux kernel: [ 142.089738] [<c0154227>] ? force_sig_info+0x77/0xc0
Nov 22 11:40:03 Philinux kernel: [ 142.089747] [<c015427f>] ? force_sig+0xf/0x20
Nov 22 11:40:03 Philinux kernel: [ 142.089756] [<c0571479>] ? do_trap+0xb9/0xc0
Nov 22 11:40:03 Philinux kernel: [ 142.089764] [<c010318d>] do_notify_resume+0x4d/0x60
Nov 22 11:40:03 Philinux kernel: [ 142.089772] [<c0103448>] work_notifysig+0x13/0x1b
Nov 22 11:41:52 Philinux kernel: imklog 4.2.0, log source = /var/run/rsyslog/kmsg started.
Triggered a reboot:
Nov 22 11:42:28 Philinux pulseaudio[1842]: ratelimit.c: 1 events suppressed
Nov 22 11:42:34 Philinux pulseaudio[1842]: ratelimit.c: 2 events suppressed
Nov 22 11:42:57 Philinux kernel: [ 93.236038] Clocksource tsc unstable (delta = -165929002 ns)
Nov 22 11:45:22 Philinux kernel: [ 238.053692] __ratelimit: 3 callbacks suppressed
Nov 22 11:45:22 Philinux kernel: [ 238.053705] update-python-m[2997]: segfault at 97ba81c ip 0808e8db sp bfad1100 error 4 in python2.6[8048000+1d3000]
In all three cases, the crash followed immediately a
__ratelimit: 3 callbacks suppressed
message.
Even when the machine does not hard crash / freeze, I can see at least one desktop application crash (usually a segfault) for each reboot, during the time the desktop initializes. The crashing application varies from time to time.
I have also seen several cases of a full freeze (or even a direct reboot) during the loading firefox.
And one time, I had a full freeze (keyboard and soft power button dead) when the machine speakers produced a loud, random "static noise": A noise similar to that of a radio tuned to no station on a short AM waveband.
It looks more and more to me that the problem is related to pulseaudio, but the next step would be to see if the problem still occurs with pulseaudio out of the way.
Could anyone tell me how to prevent pulseaudio and all of its drivers to load at all at boot time?
Triggered a reboot: 6[8048000+ 1d3000] rsyslog/ kmsg started.
Nov 22 11:34:38 Philinux kernel: [ 106.085237] __ratelimit: 3 callbacks suppressed
Nov 22 11:34:38 Philinux kernel: [ 106.085250] python[1917]: segfault at 900c0c ip 0808e110 sp bf8c0530 error 4 in python2.
Nov 22 11:38:10 Philinux kernel: imklog 4.2.0, log source = /var/run/
Triggered a reboot: applet[ 2308]: segfault at c35d5f9e ip 00d1ade7 sp bfafe724 error 5 in libc-2. 10.1.so[ c14000+ 13e000] fault+0x0/ 0x340 file->f_ op->mmap: generic_ file_mmap+ 0x0/0x50 pte+0x139/ 0x1f0 range+0x3d7/ 0x3e0 0x186/0x350 0xa0/0x160 signal+ 0x2d/0x170 cpu+0xeb/ 0x1a0 exit+0x3a/ 0xb0 to_deliver+ 0x18f/0x300 command+ 0x98/0x100 0x6b/0x160 0x38/0x70 info+0x77/ 0xc0 resume+ 0x4d/0x60 0x13/0x1b rsyslog/ kmsg started.
Nov 22 11:39:35 Philinux kernel: [ 113.942371] __ratelimit: 3 callbacks suppressed
Nov 22 11:39:35 Philinux kernel: [ 113.942385] deskbar-
Nov 22 11:40:03 Philinux kernel: [ 142.089533] BUG: Bad page map in process apport-checkrep pte:00c92025 pmd:32b91067
Nov 22 11:40:03 Philinux kernel: [ 142.089549] page:c104b240 flags:00000004 count:0 mapcount:-1 mapping:(null) index:0
Nov 22 11:40:03 Philinux kernel: [ 142.089559] addr:002e0000 vm_flags:08000075 anon_vma:(null) mapping:f6db833c index:df
Nov 22 11:40:03 Philinux kernel: [ 142.089574] vma->vm_ops->fault: filemap_
Nov 22 11:40:03 Philinux kernel: [ 142.089582] vma->vm_
Nov 22 11:40:03 Philinux kernel: [ 142.089591] Pid: 2988, comm: apport-checkrep Tainted: P 2.6.31-15-generic #50-Ubuntu
Nov 22 11:40:03 Philinux kernel: [ 142.089598] Call Trace:
Nov 22 11:40:03 Philinux kernel: [ 142.089613] [<c01c8a89>] print_bad_
Nov 22 11:40:03 Philinux kernel: [ 142.089622] [<c01ca5e7>] zap_pte_
Nov 22 11:40:03 Philinux kernel: [ 142.089631] [<c01ca866>] unmap_vmas+
Nov 22 11:40:03 Philinux kernel: [ 142.089640] [<c01cf780>] exit_mmap+
Nov 22 11:40:03 Philinux kernel: [ 142.089651] [<c014361e>] mmput+0x2e/0xa0
Nov 22 11:40:03 Philinux kernel: [ 142.089659] [<c0147bb2>] exit_mm+0xe2/0x120
Nov 22 11:40:03 Philinux kernel: [ 142.089667] [<c0147ddc>] do_exit+0xfc/0x2e0
Nov 22 11:40:03 Philinux kernel: [ 142.089676] [<c01527dd>] ? dequeue_
Nov 22 11:40:03 Philinux kernel: [ 142.089685] [<c0161dab>] ? sched_clock_
Nov 22 11:40:03 Philinux kernel: [ 142.089693] [<c0147ffa>] do_group_
Nov 22 11:40:03 Philinux kernel: [ 142.089702] [<c015403f>] get_signal_
Nov 22 11:40:03 Philinux kernel: [ 142.089712] [<c03b27b8>] ? scsi_finish_
Nov 22 11:40:03 Philinux kernel: [ 142.089721] [<c010304b>] do_signal+
Nov 22 11:40:03 Philinux kernel: [ 142.089730] [<c0152f88>] ? send_signal+
Nov 22 11:40:03 Philinux kernel: [ 142.089738] [<c0154227>] ? force_sig_
Nov 22 11:40:03 Philinux kernel: [ 142.089747] [<c015427f>] ? force_sig+0xf/0x20
Nov 22 11:40:03 Philinux kernel: [ 142.089756] [<c0571479>] ? do_trap+0xb9/0xc0
Nov 22 11:40:03 Philinux kernel: [ 142.089764] [<c010318d>] do_notify_
Nov 22 11:40:03 Philinux kernel: [ 142.089772] [<c0103448>] work_notifysig+
Nov 22 11:41:52 Philinux kernel: imklog 4.2.0, log source = /var/run/
Triggered a reboot: python- m[2997] : segfault at 97ba81c ip 0808e8db sp bfad1100 error 4 in python2. 6[8048000+ 1d3000]
Nov 22 11:42:28 Philinux pulseaudio[1842]: ratelimit.c: 1 events suppressed
Nov 22 11:42:34 Philinux pulseaudio[1842]: ratelimit.c: 2 events suppressed
Nov 22 11:42:57 Philinux kernel: [ 93.236038] Clocksource tsc unstable (delta = -165929002 ns)
Nov 22 11:45:22 Philinux kernel: [ 238.053692] __ratelimit: 3 callbacks suppressed
Nov 22 11:45:22 Philinux kernel: [ 238.053705] update-
In all three cases, the crash followed immediately a
__ratelimit: 3 callbacks suppressed
message.
Even when the machine does not hard crash / freeze, I can see at least one desktop application crash (usually a segfault) for each reboot, during the time the desktop initializes. The crashing application varies from time to time.
I have also seen several cases of a full freeze (or even a direct reboot) during the loading firefox.
And one time, I had a full freeze (keyboard and soft power button dead) when the machine speakers produced a loud, random "static noise": A noise similar to that of a radio tuned to no station on a short AM waveband.
It looks more and more to me that the problem is related to pulseaudio, but the next step would be to see if the problem still occurs with pulseaudio out of the way.
Could anyone tell me how to prevent pulseaudio and all of its drivers to load at all at boot time?