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Bug 293639 - ping: sendmsg: No buffer space available
Summary: ping: sendmsg: No buffer space available
Status: RESOLVED UPSTREAM
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: All Linux
: High normal
Assignee: Gentoo Linux bug wranglers
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-11-18 18:12 UTC by aidar
Modified: 2010-03-13 03:16 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---


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Description aidar 2009-11-18 18:12:37 UTC
Intel WiFi 5300,
kernel : kernel 2.6.32-rc7(any)
wpa_supplicant-0.6.9

with networkmanager-0.7.1-r6, or any other ebuild in the portage, pinging google.com after a while gives me an error:

ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available


However, if I do this:
stop NetworkManager,

ifconfig wlan0 down
ifconfig wlan0 up
iwconfig wlan0 AP XX:XX:XX:XX:XX:XX
dhclient wlan0

and leave pinging in terminal, the error never happens.

I modified wpa_supplicants (scan_helpers.c) wpa_scan_result_compar function to favour 5GHz APs by inserting following code. I believe there is nothing bad in this code, favouring 5GHz N networks over 2.4GHz N networks.
if(wa->level && wb->level && wa->freq && wb->freq && abs(wb->freq - wa->freq) > 2000 )
{
    return (wb->freq-wa->freq);
}

Reproducible: Always

Steps to Reproduce:
1.connect to wifi network
2.start pingig
3.error hapens
Comment 1 Stefan Behte (RETIRED) gentoo-dev Security 2009-12-18 15:26:52 UTC
I've heard that this problem might by caused by faulty hardware or that resetting the BIOS helps.

Does this problem also occur with older Kernels? You're using an RC-Kernel which we don't support.
Comment 2 aidar 2009-12-18 15:32:14 UTC
(In reply to comment #1)
> I've heard that this problem might by caused by faulty hardware or that
> resetting the BIOS helps.
> 
> Does this problem also occur with older Kernels? You're using an RC-Kernel
> which we don't support.
> 

I used some stable kernels (gentoo-sources) in portage  - the same thing.
What can I do about bios and my hardware - nothing. But I really doubt that it is the HW or BIOS as the same machine can ping anytime in Windows.

I reported upstream here > http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2129

those shitheads are useless :) I mean there are bunch of people struggling just like me, and they think it is with specific AP type...what a load of shitheads @ intel....
Comment 3 Jeroen Roovers (RETIRED) gentoo-dev 2010-01-29 05:07:07 UTC
(In reply to comment #2)
> I reported upstream here >
> http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2129
> 
> those shitheads are useless :) I mean there are bunch of people struggling just
> like me, and they think it is with specific AP type...what a load of shitheads
> @ intel....

Honestly, how is that kind of language going to help?
Comment 4 aidar 2010-01-29 05:34:13 UTC
Indeed, it won't help them at all. In fact nothing is going to help them.

I have to say this, reported at the bug report also, I had to disable CONFIG_IPV6 in the kernel for the bug to go. Interesting, right ? it never happened on the wired interface, however on wifi with iwlfifi you never get a solid network. However if I set it on again guess what happens ? Nothing changed - same bug.

Anyway, I am not able to test those settings any more, so I say it is up to "UPSTREAM", hence the new status.

thanks, Aidar
Comment 5 Henk Spaaij 2010-03-13 03:16:12 UTC
Just for someones information,

I'm getting the same error on a wired network second NIC. Both NIC's are on-board.
When I stop and start the first NIC, the second NIC starts working again.