out of vmalloc space

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Hi all,

Symptom of my problem was:

System can not ping to 127.0.0.1
I try to add an basic iptables rules
iptables -I OUTPUT -j ACCEPT
and command returned with an error including a long number.(like the
error message when you want to add DNAT to an unsupoorted chain)

In the dmesg log:

allocation failed: out of vmalloc space - use vmalloc=<size> to increase size.
printk: 2 messages suppressed.

# cat /proc/meminfo
VmallocTotal:   118776 kB
VmallocUsed:     34948 kB
VmallocChunk:    57472 kB

Kernel Centos 5 kernel : 2.6.18-164
iptables-1.3.5

According to some notes from Internet and according to the dmesg log
it is about vmalloc.
However, meminfo shows only 34948 of 118776 vmallco is being used at
that moment.

1- How can I see the real vmalloc sizes, and what the left vmalloc is used for?
2- Is the problem about vmalloc?
3- Is the solution is vmalloc=... kernel param?

Best Regards,

Oguz Yilmaz
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