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Bash[DevNull]
Guru
Joined: 10 Oct 2003
Posts: 333
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 Posted: Fri Jan 09, 2004 5:56 am Post subject: Memory allocating or system slow down |
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Hello All,
At system startup i have the same with my memory:
| Code: | ps aux; free
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 4.6 0.1 1440 476 ? S 08:42 0:08 init
root 2 0.0 0.0 0 0 ? SW 08:42 0:00 [keventd]
root 3 0.0 0.0 0 0 ? SWN 08:42 0:00 [ksoftirqd_CPU0]
root 4 0.0 0.0 0 0 ? SW 08:42 0:00 [kswapd]
root 5 0.0 0.0 0 0 ? SW 08:42 0:00 [bdflush]
root 6 0.0 0.0 0 0 ? SW 08:42 0:00 [kupdated]
root 7 0.0 0.0 0 0 ? SW 08:42 0:00 [kjournald]
root 157 0.0 0.4 1928 992 ? S 08:42 0:00 /sbin/devfsd /dev
root 375 0.0 0.0 0 0 ? SW 08:42 0:00 [khubd]
root 1671 0.0 0.2 1484 584 ? S 08:42 0:00 /usr/sbin/syslogd -m 0
root 1790 0.0 0.2 1440 520 ? S 08:42 0:00 /usr/sbin/acpid -c /etc/acpi/events
root 2079 0.0 0.2 1616 640 ? S 08:42 0:00 /usr/sbin/automount --timeout 5 /mnt/auto file /etc/autofs/auto.misc
root 2097 0.0 0.2 1616 640 ? S 08:42 0:00 /usr/sbin/automount --timeout 120 /mnt/devnull file /etc/autofs/auto.devnull
root 2203 0.0 0.5 2180 1232 ? S 08:42 0:00 /usr/sbin/klogd -c 3 -2
nobody 2569 0.0 1.9 14012 4792 ? S 08:42 0:00 dictd 1.8.0: 0/0
root 2977 0.0 0.2 1624 644 ? S 08:43 0:00 /usr/sbin/cron
root 3058 0.0 0.1 1284 276 ? S 08:43 0:00 /opt/vmware/bin/vmnet-bridge -d /var/run/vmnet-bridge-0.pid /dev/vmnet0 eth0
root 3089 0.0 0.1 1280 272 ? S 08:43 0:00 /opt/vmware/bin/vmnet-netifup -d /var/run/vmnet-netifup-vmnet8.pid /dev/vmnet8 vmnet8
root 3099 0.0 0.1 1512 468 ? S 08:43 0:00 /opt/vmware/bin/vmnet-natd -d /var/run/vmnet-natd-8.pid -m /var/run/vmnet-natd-8.mac -c /etc/vmware/vmnet8/nat/nat.conf
root 3156 0.0 0.2 1596 648 ? S 08:43 0:00 /opt/vmware/bin/vmnet-dhcpd -cf /etc/vmware/vmnet8/dhcpd/dhcpd.conf -lf /etc/vmware/vmnet8/dhcpd/dhcpd.leases -pf /var/run/vmnet-dhcpd-vmnet8.pid vmnet8
root 3368 0.0 0.2 1476 572 vc/1 S 08:43 0:00 /sbin/agetty 38400 tty1 linux
root 3369 0.0 0.2 1476 572 vc/2 S 08:43 0:00 /sbin/agetty 38400 tty2 linux
root 3370 0.0 0.4 2240 1196 ? S 08:43 0:00 login -- bash
bash 3421 0.4 0.7 5024 1888 vc/3 S 08:44 0:00 -bash
bash 3441 0.0 0.3 2408 804 vc/3 R 08:45 0:00 ps aux
total used free shared buffers cached
Mem: 240868 28272 212596 0 2912 15168
-/+ buffers/cache: 10192 230676
Swap: 401616 0 401616
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But after hard-working (mozilla, gimp and etc.) my memory leak out. So i have (when i am exited from all apps: X, mozilla and etc)
| Code: | ps aux; free
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1440 80 ? S Jan06 0:08 init
root 2 0.0 0.0 0 0 ? SW Jan06 0:01 [keventd]
root 3 0.0 0.0 0 0 ? SWN Jan06 0:01 [ksoftirqd_CPU0]
root 4 0.0 0.0 0 0 ? SW Jan06 0:16 [kswapd]
root 5 0.0 0.0 0 0 ? SW Jan06 0:00 [bdflush]
root 6 0.0 0.0 0 0 ? SW Jan06 0:00 [kupdated]
root 7 0.0 0.0 0 0 ? SW Jan06 0:01 [kjournald]
root 157 0.0 0.1 1928 364 ? S Jan06 0:00 /sbin/devfsd /dev
root 376 0.0 0.0 0 0 ? SW Jan06 0:00 [khubd]
root 1584 0.0 0.0 1484 180 ? S Jan06 0:00 /usr/sbin/syslogd -m 0
root 1687 0.0 0.0 1440 4 ? S Jan06 0:00 /usr/sbin/acpid -c /etc/acpi/events
root 2011 0.0 0.0 1616 100 ? S Jan06 0:00 /usr/sbin/automount --timeout 5 /mnt/auto file /etc/autofs/auto.misc
root 2053 0.0 0.0 1616 100 ? S Jan06 0:00 /usr/sbin/automount --timeout 120 /mnt/devnull file /etc/autofs/auto.devnull
root 2135 0.0 0.0 2180 4 ? S Jan06 0:00 /usr/sbin/klogd -c 3 -2
nobody 2501 0.0 0.0 14012 4 ? S Jan06 0:00 dictd 1.8.0: 1/5
root 2890 0.0 0.0 1624 104 ? S Jan06 0:00 /usr/sbin/cron
root 2958 0.0 0.0 1284 4 ? S Jan06 0:00 /opt/vmware/bin/vmnet-bridge -d /var/run/vmnet-bridge-0.pid /dev/vmnet0 eth0
root 2988 0.0 0.0 1564 4 ? S Jan06 0:00 /opt/vmware/bin/vmnet-natd -d /var/run/vmnet-natd-8.pid -m /var/run/vmnet-natd-8.mac -c /etc/vmware/vmnet8/nat/nat.conf
root 3256 0.0 0.0 1476 4 vc/1 S Jan06 0:00 /sbin/agetty 38400 tty1 linux
root 3257 0.0 0.0 1476 4 vc/2 S Jan06 0:00 /sbin/agetty 38400 tty2 linux
root 3258 0.0 0.0 2240 4 ? S Jan06 0:00 login -- bash
bash 3309 0.0 0.4 5024 1180 vc/3 S Jan06 0:00 -bash
root 3324 0.0 0.0 1280 4 ? S Jan06 0:00 /opt/vmware/bin/vmnet-netifup -d /var/run/vmnet-netifup-vmnet8.pid /dev/vmnet8 vmnet8
root 3338 0.0 0.0 1600 4 ? S Jan06 0:00 /opt/vmware/bin/vmnet-dhcpd -cf /etc/vmware/vmnet8/dhcpd/dhcpd.conf -lf /etc/vmware/vmnet8/dhcpd/dhcpd.leases -pf /var/run/vmnet-dhcpd-vmnet8.pid vmnet8
bash 15696 0.0 0.0 5864 4 ? S Jan08 0:00 smbmount //vx/video /home/bash/mnt/machine/
bash 2513 0.0 0.3 2408 804 vc/3 R 08:40 0:00 ps aux
total used free shared buffers cached
Mem: 240868 212536 28332 0 3360 46960
-/+ buffers/cache: 162216 78652
Swap: 401616 3964 397652
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How you can see, no applications eat memory.
But i have big problems to work with apps. For example emerge work terrible slowly. It is all time work with SWAP and have many hdd IO. Why? How i can to cleanup my memory or how to speed up my system??
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Cosmin
Guru
Joined: 18 Dec 2003
Posts: 447
Location: Bucharest, Romania
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| Posted: Fri Jan 09, 2004 11:22 am Post subject: |
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I don't know if this helps you, but there is a GLSA regarding a security vulnerability.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200401-01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
~ http://security.gentoo.org
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~ Severity: High
~ Title: Linux kernel do_mremap() privilege escalation vulnerability
~ Date: January 08, 2004
~ Bugs: #37292, #37317
~ ID: 200401-01
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fleed
l33t
Joined: 28 Aug 2002
Posts: 756
Location: London
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| Posted: Fri Jan 09, 2004 11:33 am Post subject: |
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I don't think the sec vuln is really applicable to this since it's to do with privilege escalation rather than memory leak.
What kernel are you running? Do you have anything strange in dmesg? |
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Cosmin
Guru
Joined: 18 Dec 2003
Posts: 447
Location: Bucharest, Romania
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| Posted: Fri Jan 09, 2004 11:55 am Post subject: |
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| I run kernel 2.4.19, but I didn't encountered any problem (so far). The announcement addresses a security problem caused by faulty memory allocation. You can gain root using this, but there are other problems also. Perhaps you installed a buggy software recently that has this bug... |
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Bash[DevNull]
Guru
Joined: 10 Oct 2003
Posts: 333
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| Posted: Sun Jan 11, 2004 3:59 pm Post subject: |
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| Cosmin wrote: | | You can gain root using this, but there are other problems also. |
You wrong 
| Linus wrote: | Can somebody tell me (in private) what the exploit is in the first place?
The thing is, I can see the VM getting confused and creating a zero-sized
vma, and I agree that it shouldn't do that. The fix is trivial. But I
don't see where the claimed privilege escalation comes from. A zero-sized
vma isn't ever going to be _useful_, since nothing will actually find it.
So yes, it creates some confusion in the VM layer, but it all seems
benign. It's clearly a bug, but where does the security problem come in?
Linus |
http://lkml.org/lkml/2004/1/5/296
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Bash[DevNull]
Guru
Joined: 10 Oct 2003
Posts: 333
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| Posted: Sun Jan 11, 2004 4:03 pm Post subject: |
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| fleed wrote: | I don't think the sec vuln is really applicable to this since it's to do with privilege escalation rather than memory leak.
What kernel are you running? Do you have anything strange in dmesg? |
Hm! I found that problem in kernel and perhaps with hdparm.
With my old kernel 2.4.20-gentoo-r8 all work perhaps. But now i have strange error when hparm-service starting
| Code: | Jan 9 08:43:02 blackhole kernel: hda: dma_timer_expiry: dma status == 0x61
Jan 9 08:43:12 blackhole kernel: hda: error waiting for DMA
Jan 9 08:43:12 blackhole kernel: hda: dma timeout retry: status=0x50 { DriveReady SeekComplete } |
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