Ubuntu
linux-source-2.6.15 package

Random freezes

Bug #17096 reported by coldsalmon on 2005-05-15

Affects		Status	Importance	Assigned to	Milestone
	linux-source-2.6.15 (Ubuntu)	Invalid	Medium	Jonathan Riddell

Bug Description

Kubuntu sometimes freezes ramdomly, with CPU usage at 100%. I also posted bug 16891,
stating that it also locks up specifically when I change the ACPI button settings,
perhaps this is related.

Also, I have noticed that sometimes, randomly, I will have a 100% CPU usage for a
while when nothing processor-intensive is running. I don't know if this is related,
perhaps it is a separate bug. I ran top when this occured last, and got this:

top - 03:12:26 up 7 min, 2 users, load average: 1.43, 0.75, 0.34
Tasks: 116 total, 2 running, 114 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.3% us, 2.0% sy, 0.3% ni, 0.0% id, 96.0% wa, 0.3% hi, 0.0% si
Mem: 515988k total, 433096k used, 82892k free, 70004k buffers
Swap: 498004k total, 0k used, 498004k free, 128288k cached

PID USER 8564 root 7336 root 120 root 6903 hal 8635 drew 1 root 2 root 3 root 4 root 22 root 155 root 156 root 158 root 157 root 745 root 1121 root 15 0 1149 root 2301 root 15 0 3444 root 15 0 3463 root PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
26 10 1772 720 480 R 2.0 0.1 0:01.80 updatedb
15 0 65100 19m 2576 S 1.3 3.8 0:23.84 Xorg
5 -10 0 0 0 S 0.3 0.0 0:00.17 kblockd/0
16 0 7380 5928 1596 S 0.3 1.1 0:00.69 hald
16 0 2080 1072 820 R 0.3 0.2 0:00.08 top
16 0 1552 508 444 S 0.0 0.1 0:00.47 init
34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
5 -10 0 0 0 S 0.0 0.0 0:00.00 events/0
6 -10 0 0 0 S 0.0 0.0 0:00.01 khelper
5 -10 0 0 0 S 0.0 0.0 0:00.00 kacpid
15 0 0 0 0 S 0.0 0.0 0:00.00 pdflush
15 0 0 0 0 S 0.0 0.0 0:00.01 pdflush
6 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0
15 0 0 0 0 S 0.0 0.0 0:00.00 kswapd0
15 0 0 0 0 S 0.0 0.0 0:00.00 kseriod
0 0 0 S 0.0 0.0 0:00.05 kjournald
11 -10 1532 364 288 S 0.0 0.1 0:00.03 udevd
0 0 0 S 0.0 0.0 0:00.00 khpsbpkt
0 0 0 D 0.0 0.0 0:00.00 kjournald
5 -10 0 0 0 S 0.0 0.0 0:00.00 reiserfs/0

What I noticed (as a relative noob) was updatedb running, and 96% usage on I/O wait.
This usually goes on for about a minute, and then stopps with no ill effects.

--C

Revision history for this message

coldsalmon (coldsalmon) wrote on 2005-05-15:

Hardware:

Gateway 450ROG laptop

Revision history for this message

Jonathan Riddell (jr) wrote on 2005-05-28:

Freeze as in machine needs rebooting?

Updatedb indexes all the files on the disk and will cause high disk and CPU usage.

Revision history for this message

Matt Zimmerman (mdz) wrote on 2005-06-09:

You said 100% CPU usage, but your top output shows very low CPU usage (but high I/O)

Revision history for this message

Rkimber (rkimber) wrote on 2005-11-06:

Download full text (4.0 KiB)

I also get freezes that I suspect are linked to updatedb in some way. My
machine (dual opteron 2GB, MSI Master2-FAR) always freezes overnight. This is
not much of an indicator that updatedb is involved, but because of the problem I
have been experimenting, and it seems that it might be kernel related - i.e.
updatedb is procucing conditions that can't be handled. I think it is also smp
related in my case, since I don't get the problem if I run a non-smp kernel. I
have recently experimented with the 386 smp kernel (2.6.12-9-k7-smp) and managed
to acquire the following oops that suggests that updatedb was running:-

Nov 5 07:36:00 infinity kernel: [4363488.664000] Unable to handle kernel
paging request at virtual address 080984cc
Nov 5 07:36:00 infinity kernel: [4363488.664000] printing eip:
Nov 5 07:36:00 infinity kernel: [4363488.664000] c01030d0
Nov 5 07:36:00 infinity kernel: [4363488.664000] *pde = 28d90067
Nov 5 07:36:00 infinity kernel: [4363488.664000] *pte = 00000000
Nov 5 07:36:00 infinity kernel: [4363488.664000] Oops: 0000 [#1]
Nov 5 07:36:00 infinity kernel: [4363488.664000] SMP
Nov 5 07:36:00 infinity kernel: [4363488.664000] Modules linked in:
binfmt_misc ipt_limit iptable_mangle ipt_LOG ipt_MASQUERADE iptable_nat
ipt_TOS ipt_REJECT ip_conntrack_irc ip_conntrack_ftp ipt_state ip_conntrack
iptable_filter ip_tables video tc1100_wmi sony_acpi pcc_acpi hotkey
dev_acpi i2c_acpi_ec button battery container ac ipv6 af_packet sd_mod
pcspkr rtc snd_seq_dummy snd_seq_oss snd_seq_midi snd_seq_midi_event
snd_seq snd_via82xx gameport snd_ac97_codec snd_mpu401_uart snd_rawmidi
snd_seq_device bt878 snd_bt87x snd_pcm_oss snd_mixer_oss snd_pcm snd_timer
snd soundcore snd_page_alloc tuner tvaudio bttv video_buf firmware_class
i2c_algo_bit v4l2_common btcx_risc tveeprom videodev shpchp pci_hotplug
amd64_agp ext2 nls_iso8859_1 nls_cp437 vfat fat dm_mod tsdev evdev nvidia
agpgart w83627hf eeprom i2c_sensor i2c_isa i2c_viapro i2c_core psmouse
mousedev parport_pc lp parport md ext3 jbd mbcache thermal processor fan
ide_cd cdrom usb_storage scsi_mod ehci_hcd uhci_hcd usbcore tg3
pdc202xx_new ide_disk ide_gen
Nov 5 07:36:00 infinity kernel: ric via82cxxx ide_core unix vesafb
capability commoncap vga16fb vgastate softcursor cfbimgblt cfbfillrect
cfbcopyarea fbcon tileblit font bitblit
Nov 5 07:36:00 infinity kernel: [4363488.664000] CPU: 0
Nov 5 07:36:00 infinity kernel: [4363488.664000] EIP: 0060
[sysenter_past_esp+89/117] Tainted: P VLI
Nov 5 07:36:00 infinity kernel: [4363488.664000] EFLAGS: 00010086
(2.6.12-9-k7-smp)
Nov 5 07:36:00 infinity kernel: [4363488.664000] EIP is at
sysenter_past_esp+0x59/0x75
Nov 5 07:36:00 infinity kernel: [4363488.664000] eax: fffffff2 ebx:
b7fb30dc ecx: f62f8200 edx: f08a6b00
Nov 5 07:36:00 infinity kernel: [4363488.664000] esi: 0000dfd9 edi:
c01153a7 ebp: 080984c4 esp: e8d99fbc
Nov 5 07:36:00 infinity kernel: [4363488.664000] ds: 007b es: 007b ss:
0068
Nov 5 07:36:00 infinity kernel: [4363488.664000] Process updatedb (pid:
27144, threadinfo=e8d98000 task=e9763a60)
Nov 5 07:36:00 infinity kernel: [4363488.664000] Stack: 080984c4 08055c8c
00001000 08055c8c b7fb30dc bfcdd2...

I also get freezes that I suspect are linked to updatedb in some way.  My
machine (dual opteron 2GB, MSI Master2-FAR) always freezes overnight.  This is
not much of an indicator that updatedb is involved, but because of the problem I
have been experimenting, and it seems that it might be kernel related - i.e.
updatedb is procucing conditions that can't be handled.  I think it is also smp
related in my case, since I don't get the problem if I run a non-smp kernel.  I
have recently experimented with the 386 smp kernel (2.6.12-9-k7-smp) and managed
to acquire the following oops that suggests that updatedb was running:-

Nov  5 07:36:00 infinity kernel: [4363488.664000] Unable to handle kernel
paging request at virtual address 080984cc
Nov  5 07:36:00 infinity kernel: [4363488.664000]  printing eip:
Nov  5 07:36:00 infinity kernel: [4363488.664000] c01030d0
Nov  5 07:36:00 infinity kernel: [4363488.664000] *pde = 28d90067
Nov  5 07:36:00 infinity kernel: [4363488.664000] *pte = 00000000
Nov  5 07:36:00 infinity kernel: [4363488.664000] Oops: 0000 [#1]
Nov  5 07:36:00 infinity kernel: [4363488.664000] SMP
Nov  5 07:36:00 infinity kernel: [4363488.664000] Modules linked in:
binfmt_misc ipt_limit iptable_mangle ipt_LOG ipt_MASQUERADE iptable_nat
ipt_TOS ipt_REJECT ip_conntrack_irc ip_conntrack_ftp ipt_state ip_conntrack
iptable_filter ip_tables video tc1100_wmi sony_acpi pcc_acpi hotkey
dev_acpi i2c_acpi_ec button battery container ac ipv6 af_packet sd_mod
pcspkr rtc snd_seq_dummy snd_seq_oss snd_seq_midi snd_seq_midi_event
snd_seq snd_via82xx gameport snd_ac97_codec snd_mpu401_uart snd_rawmidi
snd_seq_device bt878 snd_bt87x snd_pcm_oss snd_mixer_oss snd_pcm snd_timer
snd soundcore snd_page_alloc tuner tvaudio bttv video_buf firmware_class
i2c_algo_bit v4l2_common btcx_risc tveeprom videodev shpchp pci_hotplug
amd64_agp ext2 nls_iso8859_1 nls_cp437 vfat fat dm_mod tsdev evdev nvidia
agpgart w83627hf eeprom i2c_sensor i2c_isa i2c_viapro i2c_core psmouse
mousedev parport_pc lp parport md ext3 jbd mbcache thermal processor fan
ide_cd cdrom usb_storage scsi_mod ehci_hcd uhci_hcd usbcore tg3
pdc202xx_new ide_disk ide_gen
Nov  5 07:36:00 infinity kernel: ric via82cxxx ide_core unix vesafb
capability commoncap vga16fb vgastate softcursor cfbimgblt cfbfillrect
cfbcopyarea fbcon tileblit font bitblit
Nov  5 07:36:00 infinity kernel: [4363488.664000] CPU:    0
Nov  5 07:36:00 infinity kernel: [4363488.664000] EIP:    0060
[sysenter_past_esp+89/117]    Tainted: P      VLI
Nov  5 07:36:00 infinity kernel: [4363488.664000] EFLAGS: 00010086
(2.6.12-9-k7-smp)
Nov  5 07:36:00 infinity kernel: [4363488.664000] EIP is at
sysenter_past_esp+0x59/0x75
Nov  5 07:36:00 infinity kernel: [4363488.664000] eax: fffffff2   ebx:
b7fb30dc   ecx: f62f8200   edx: f08a6b00
Nov  5 07:36:00 infinity kernel: [4363488.664000] esi: 0000dfd9   edi:
c01153a7   ebp: 080984c4   esp: e8d99fbc
Nov  5 07:36:00 infinity kernel: [4363488.664000] ds: 007b   es: 007b   ss:
0068
Nov  5 07:36:00 infinity kernel: [4363488.664000] Process updatedb (pid:
27144, threadinfo=e8d98000 task=e9763a60)
Nov  5 07:36:00 infinity kernel: [4363488.664000] Stack: 080984c4 08055c8c
00001000 08055c8c b7fb30dc bfcdd228 fffffff2 0000007b
Nov  5 07:36:00 infinity kernel: [4363488.664000]        0000007b 000000dc
ffffe410 00000073 00000212 bfcdd1cc 0000007b 00000000
Nov  5 07:36:00 infinity kernel: [4363488.664000]        00000000
Nov  5 07:36:00 infinity kernel: [4363488.664000] Call Trace:
Nov  5 07:36:00 infinity kernel: [4363488.664000] Code: c2 bd 00 e0 ff ff 21
e5 66 f7 45 08 81 01 0f 85 17 01 00 00 3d 26 01 00 00 0f 83 74 01 00 00 ff
14 85 80 b7 2e c0 89 44 24 18 fa <8b> 4d 08 66 f7 c1 ff fe 0f 85 1a 01 00
00 8b 54 24 28 8b 4c 24
Nov  5 07:36:01 infinity exiting on signal 15
Nov  5 07:36:02 infinity syslogd 1.4.1#17ubuntu3: restart.

I don't know enough to make sense of this, so I can't say if it's relevent to
the original bug posted.  Nor it is clear to me whether it's a kernel issue, an
updatedb issue, or whether it's a hardware issue, such as faulty memory (though
memtest86 doesn't show anything).

Revision history for this message

Simon Law (sfllaw) wrote on 2006-05-04:

Is this bug still present in recent Flights of Kubuntu Dapper?

If so, please comment and we will re-open the bug.

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Ubuntulinux-source-2.6.15 package

Random freezes

Bug Description

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linux-source-2.6.15 package