| "oops in connect_init" in kernel ring buffer [message #8054] |
Sat, 04 November 2006 07:36  |
rickb
Messages: 368
Registered: October 2006
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Senior Member |
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Hi, I booted into 2.6.18 with patch patch-ovz028test002-combined and config kernel-2.6.18-028test002-i686-enterprise.config.ovz on a dual core dual cpu xeon server. After 26 minutes of uptime see 74 of these entries in dmesg:
Oops in connect_init! tp->advmss=0, dst->advmss=16396
dst: pmtu=16436, advmss=16396
sk->state=2, tp: ack.rcv_mss=0, mss_cache=524, advmss=0, user_mss=0
and a 48 of these:
Oops in connect_init! tp->advmss=0, dst->advmss=1460
dst: pmtu=1500, advmss=1460
sk->state=2, tp: ack.rcv_mss=0, mss_cache=524, advmss=0, user_mss=0
The server seems to be running fine, what does it mean and is it anything to worry about?
Thanks!
Rick
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Common Terms I post with: http://wiki.openvz.org/Category:Definitions
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[Updated on: Sat, 04 November 2006 07:37] Report message to a moderator |
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| Another oddity with kernel-smp-2.6.18-ovz028test002.1 [message #8070 is a reply to message #8054] |
Mon, 06 November 2006 20:15  |
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dowdle
Messages: 261
Registered: December 2005
Location: Bozeman, Montana
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Senior Member |
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Greetings,
I also see those opps message in my /var/log/messages... but I'll just pile on here... since this topic is about the new 2.6.18 kernel. Perhaps I'll end up filing a bugzilla report.
On the physical host, it shows an odd process:
[root@new ~]# w
15:08:16 up 1 day, 21:20, 2 users, load average: 0.08, 0.25, 0.25
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/0 65-100-77-107.bl Sat20 26:13m 2.09s 2.03s tail -f /home/cvs/server-root/mint/CVSROOT/history
root pts/1 scott.coe.montan 15:00 0.00s 0.04s 0.01s w
Further investigation shows:
[root@new ~]# ps auxwww | grep cvs
501 18877 0.0 0.0 1848 560 /vz/root/104/dev/pts/0 S+ Nov05 0:02 tail -f /home/cvs/server-root/mint/CVSROOT/history
Noticed that w shows the process being run on the physical host but ps actually shows it is being run on vps 104.
More info:
[root@new ~]# vzctl enter 104
entered into VE 104
-bash-3.00# w
15:10:15 up 1 day, 21:18, 1 user, load average: 0.00, 0.05, 0.04
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
frank pts/0 wh58-508.st.uni- Sat18 36:30m 2.03s 2.03s tail -f /home/cvs/server-root/mint/CVSROOT/history
So, it appears that w on the physical host is confused and thinks root from host X is running the tail... when in reality, it is a completely different user, sshed in from a completely different host on a VPS rather than the physical host.
Weird, huh?
--
TYL, Scott Dowdle
Belgrade, Montana, USA
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| Re: Another oddity with kernel-smp-2.6.18-ovz028test002.1 [message #8078 is a reply to message #8070] |
Tue, 07 November 2006 08:08 |
Vasily Tarasov
Messages: 1345
Registered: January 2006
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Senior Member |
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There're problems with w. You can search in forum about it. Generally it happens due to two reasons:
1) algorithm, that w uses to get information (it uses /proc/<pid>).
2) in VE0 you can see all processes -> all /proc/<pid> entries.
As concerns
| Quote: |
Oops in connect_init! tp->advmss=0, dst->advmss=16396
dst: pmtu=16436, advmss=16396
sk->state=2, tp: ack.rcv_mss=0, mss_cache=524, advmss=0, user_mss=0
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Please, fille the bug.
Thanks,
Vasily.
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