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4
votes
1answer
89 views

kernel:EDAC MC0 spam in dmesg

I have spam in dmesg containing: kernel:EDAC MC0: UE page 0x0, offset 0x0, grain 1073741824, row 3, labels ":": i3200 UE Any idea what suppose to be wrong? here are loaded modules: # lsmod | grep ...
-1
votes
1answer
183 views

Nginx Reverse Proxy Segfault on High Traffic

Recently my load balancer with Nginx rev proxy showing the following error messages on /var/log/dmesg: [6278902.558300] nginx[15683]: segfault at ffffffffffffffff ip 0000000000457b99 sp ...
1
vote
2answers
405 views

I/O Errors but no smart or ZFS errors

I'm having trouble to identify a problem for a friend of my. He is running ZFS on Linux with the Debian distribution. We are getting these entries into the dmesg. [273044.834151] mpt2sas0: ...
2
votes
1answer
316 views

dmesg time vs system time time isn't correct

I hope that here is somebody that can help me with this strange problem. I think that i know why it is happening but i don't know how to solve it. Maybe it is because the BIOS time isn't set correct ...
0
votes
2answers
68 views

How to find out previous start-up time, so one can read `/var/log/dmesg.0` log?

That should be a quick one: I'm running a small server, and one day discovered, that one of the LXC containers inside is down. I started it again, but I want to find out, for how long it was down. I ...
4
votes
1answer
301 views

Same hard drive problems in dmesg on several servers

We have a couple of these SuperMicro MicroCloud units. In total we've got 16 servers (2x8) which all randomly spew these messages in dmesg: [4661350.802707] ata2.00: failed command: WRITE FPDMA ...
-3
votes
1answer
893 views

SMART and exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [closed]

looking at the logs I see several errors. The smart status is PASSED, but even if It is verbose It isn't clear what is going on. Should the disk be replaced? Attached dmesg and smart logs # dmesg ...
1
vote
1answer
752 views

allocation failed: out of vmalloc space - use vmalloc=<size> to increase size

I have a problem with the following error appearing upon sending a dmesg command to my server: allocation failed: out of vmalloc space - use vmalloc=<size> to increase size. How do I increase ...
2
votes
2answers
1k views

nf_conntrack complaints in dmesg

While investigating complains on bad HTTP server performance, I've discovered these lines in dmesg of my Xen XCP host that contains a guest OS with said server: [11458852.811070] net_ratelimit: 321 ...
0
votes
2answers
891 views

Ext4 self errors after some time on CentOS 5.8 64-bit

I get such warnings in dmesg: EXT4-fs error (device md2): mb_free_blocks: double-free of inode 0's block 602619328(bit 15808 in group EXT4-fs error (device md2): mb_free_blocks: double-free of inode ...
2
votes
2answers
164 views

How do I find out my CD ROM hardware specifics on FreeBSD?

I can usually use dmesg soon after bootup to display hardware info that my kernel loads. After my system has been up for a while however, dmesg no longer produces anything of value concerning ...
6
votes
3answers
7k views

Linux Centos with dmesg timestamp

I would like to read my Centos 5.x dmesg with timestamp, how do I do this?
9
votes
3answers
10k views

How to convert 'dmesg' time format to 'real' time format

I have (for example) this log entry in dmesg output: [600711.395348] do_trap: 6 callbacks suppressed Is there a possibility to convert this 'dmesg' time to 'real' time to know, when this event ...
0
votes
1answer
858 views

APIC error on CPU1: 60(60) in dmesg what does it mean?

APIC error on CPU1: 60(60) in my dmesg log. What does it mean? Should I be worried! Is this some hardware issue?
1
vote
2answers
640 views

Does this dmesg output indicate a failed network card on Red Hat Enterprise?

Having an issue with a network card on a server today. If I restart the service via "service network restart" the card never comes back, the command prompt just hangs. I suspect it's a bad network ...
1
vote
1answer
1k views

why dmesg | grep Memory gives two different physical memory amounts?

I am monitoring physical memory in a server I administer, and my hardware provider told me they had increased physical memory size to 4Gb... However, using several tools (free -m; top; dmesg | grep ...
2
votes
2answers
326 views

Dmesg and cpuinfo MHz differencies

I can see different values of CPU MHz here: cat /proc/cpuinfo model name : Intel(R) Xeon(R) CPU E3110 @ 3.00GHz stepping : 6 cpu MHz : 2000.000 Model say 3GHz and cpu ...
23
votes
4answers
16k views

How to add message that will be read with dmesg?

I am trying to write some custom messages in my dmesg output. I tried: logger "Hello" but this does not work. It exits without error, but no "Hello" appears int the output of: dmesg I am using a ...
3
votes
4answers
685 views

Is segfault signal always sent to application

My application usually crashes and prints stack to log if received segfault signal. But in some environment the 'dmesg' shows segfault messages related to my application, but application uptime is ...
3
votes
2answers
2k views

dmesg SYN flood on 80 sysctl -p

I am getting a synflood on my server port 80 and i cannot stop it. first i got tables full then i disabled iptables to find out that its a synflood netstat -n | grep :80 |wc -l #returns 1300 - 2000 ...
2
votes
4answers
2k views

Explain the output of dmesg

I am running a Debian system, and find the output of the dmesg command very helpful. Can somebody explain to me what information is output by the dmesg command? Is it a 1:1 correlation to the kern.* ...
2
votes
6answers
6k views

Monitoring dmesg output

I find that when something goes wrong at a low level on one of my linux servers, I can see messages about it in the kernel ring buffer. These can be viewed from the command line using the dmesg ...
2
votes
4answers
2k views

What are these strange entries in dmesg?

Running Ubuntu Linux 9.04, and I see these odd log lines in dmesg: [ 18.673752] type=1505 audit(1240159967.221:2): operation="profile_load" name="/usr/share/gdm/guest-session/Xsession" ...