netdev - Re: [PATCH 00/16] Remove the ipv4 routing cache

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20120720.155021.1919200619716435427.davem@davemloft.net>
Date:	Fri, 20 Jul 2012 15:50:21 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 00/16] Remove the ipv4 routing cache

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Sat, 21 Jul 2012 00:42:46 +0200

> (Apparently we choke on neighbour entries count.
> 
> entries = atomic_inc_return(&tbl->entries) - 1;
> 
> We need a percpu_counter ? Or something is wrong ?

What do you mean we choke on it?  Does it exceed the thresholds
and we start garbage-collecting?

That would indicate a leak, or we are creating new neigh entries when
we shouldn't be, ie. we're not comparing the keys in the hash table
entries correctly during the lookup in net/ipv4/ip_output.c
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html