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Re: percpu allocation failures

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Dennis Zhou <dennisszhou@gmail.com> writes:

> Hi Luis,
>
> This seems to be an issue with the reserved chunk being unable to
> allocate memory when loading kernel modules. Unfortunately, I have not 
> been successful in reproducing this with the reserved chunk allocation
> path exposed or by inserting the nft_meta module.
>
> Could you please send me the output when ran with the following patch
> and the output of the percpu memory statistics file before and after
> inserting the module (PERCPU_STATS)? The stats are in
> /sys/kernel/debug/percpu_stats.

Please find attached all the info you requested.  Hope it helps.

Also, here's the nft script I'm using to trigger the issue locally:

#!/usr/sbin/nft -f

flush ruleset

table inet filter {
	chain input {
		type filter hook input priority 0;
		iif lo accept
		ct state established,related accept
		tcp dport { 22 } ct state new accept
		ip6 nexthdr icmpv6 icmpv6 type { nd-neighbor-solicit,  nd-router-advert, nd-neighbor-advert } accept
		counter drop
	}
}

Cheers,
-- 
Luis

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Re: percpu allocation failures Dennis Zhou <dennisszhou@gmail.com> - 2017-09-27 04:00 +0200
  Re: percpu allocation failures Luis Henriques <lhenriques@suse.com> - 2017-09-27 11:10 +0200

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