Re: Problems with /proc/net/tcp6 - possible bug - ipv6
From: David Miller
Date: Mon Jan 24 2011 - 17:31:13 EST
From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date: Sat, 22 Jan 2011 22:40:44 +0100
> Le samedi 22 janvier 2011 à 22:20 +0100, Eric Dumazet a écrit :
>> Le samedi 22 janvier 2011 à 11:42 -0800, PK a écrit :
>> > Eric Dumazet wrote:
>> > >
>> > > I had some incidents, after hours of testing...
>> > >
>> > > After following patch, I could not reproduce it.
>> > Looks like that patch solved the /proc/net/tcp6 problem. The causal commit was
>> > the one you identified... confirmed with bisect.
>> > These warnings show up when I run the script (or I presume any tcp6 connection
>> > flooder) with /proc/sys/net/tcp/ipv4/tcp_tw_recycle enabled. There's textual
>> > corruption of the traces a lot of the time. Here's a sample trace that doesn't
>> > appear to be corrupt. All the warnings I've seen are from route.c:209, and I
>> > don't see how that would cause memory corruption.
>> Thats a different isse, already reported, under investigation.
>> David did some changes recently
> In my testings, I even have crashes in cleanup_once() if I
> enable /proc/sys/net/ipv4/tcp_tw_recycle
I'm looking into this, thanks guys.
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