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SubjectRe: kernel: request_module[net-pf-10]: fork failed, errno 11
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On Tue, 11 Jun 2002 14:42:25 +0100, 
Athanasius <Athanasius@miggy.org.uk> wrote:
> Ok, a little more investigation:
>
>root@bowl:/sbin# cat modprobe-logging
>#!/bin/sh
>
>echo "`date` `ps axh | wc -l`: $@" >> /var/log/modprobe.log
>exec /sbin/modprobe $@
>root@bowl:/sbin# cat /proc/sys/kernel/modprobe
>/sbin/modprobe-logging

You do not need a special modprobe.log script. Just mkdir
/var/log/ksymoops and you will get module logging automatically. man
insmod, look for ksymoops.

>In /var/log/kern.log:
>Jun 11 14:36:58 bowl kernel: request_module[net-pf-10]: fork failed, errno 11
>
>And in /var/log/modprobe.log:
>
>Tue Jun 11 14:36:41 BST 2002 229: -s -k -- net-pf-10
>Tue Jun 11 14:36:58 BST 2002 228: -s -k -- net-pf-10
>Tue Jun 11 14:36:58 BST 2002 227: -s -k -- net-pf-10
>Tue Jun 11 14:37:02 BST 2002 227: -s -k -- net-pf-10

>/proc/sys/kernel/threads-max is 4095.
> Note that ulimit -u is 256, but that's per login instance normally and
>I'd not have thought a kernel thread goes through PAM anyway...

This is weird. 'fork failed' is issued when kernel_thread() fails.
This means that the fork() syscall for kernel threads is failing,
before the application has even been started. The fact that you see
other modprobes working only shows that multiple requests for net-pf-10
were issued and some of them got as far as running modprobe but others
failed.

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