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From: Rusty Russell <rusty@linuxcare.com.au>
To: "David S. Miller" <davem@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ip_defrag is broken (was: Re: test12 lockups -- need feedback)
Date: Sat, 16 Dec 2000 00:12:31 +1100	[thread overview]
Message-ID: <E146uf1-0000Dq-00@halfway> (raw)
In-Reply-To: Your message of "Thu, 14 Dec 2000 12:23:19 -0800." <200012142023.MAA12823@pizda.ninka.net>

In message <200012142023.MAA12823@pizda.ninka.net> you write:
>    Date: Thu, 14 Dec 2000 15:35:48 -0500 (EST)
>    From: "Mohammad A. Haque" <mhaque@haque.net>
> 
>    I'll be trying in a few hours.
> 
> Meanwhile for people wanting the crashes to be fixed, please
> apply this patch.
> 
> This was _always_ broken, and really what netfilter is doing
> should have never worked.  The only theory I have right now
> is that people using netfilter never had IP fragments timeout.
> :-)

Ick, we've previously had issues with using the defrag routine from
PRE_ROUTING (Andi fixed the `called without bh disabled' problem). 8(

Good news is that it's all done from one place:

net/ipv4/ip_conntrack_core.c:910:ip_ct_gather_frags(struct sk_buff *skb)

You can fix it to obey the rules there, rather than hacking fragment
code.

Cheers,
Rusty.
--
Hacking time.
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  parent reply	other threads:[~2000-12-17  8:45 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-12-13 23:22 test12 lockups -- need feedback Mohammad A. Haque
2000-12-14  0:22 ` Mikael Djurfeldt
2000-12-14  0:29   ` Mikael Djurfeldt
2000-12-14  1:28     ` dep
2000-12-14  2:58 ` Mohammad A. Haque
2000-12-14  3:48   ` Mohammad A. Haque
2000-12-14 12:21     ` Ingo Oeser
2000-12-14 11:42       ` Mohammad A. Haque
2000-12-15 15:20         ` Ingo Oeser
2000-12-14 12:10       ` dep
2000-12-14 12:15         ` Mohammad A. Haque
2000-12-14 13:16           ` dep
2000-12-14 14:41           ` Bob_Tracy
2000-12-14 18:38           ` ip_defrag is broken (was: Re: test12 lockups -- need feedback) Ion Badulescu
2000-12-14 19:27             ` David S. Miller
2000-12-14 19:52               ` Ion Badulescu
2000-12-14 19:43                 ` David S. Miller
2000-12-14 20:07                   ` Ion Badulescu
2000-12-14 19:55                     ` Netfilter is broken (was Re: ip_defrag is broken (was: Re: test12 lockups -- need feedback)) David S. Miller
2000-12-15  0:20                       ` Harald Welte
2000-12-15  0:11                         ` David S. Miller
2000-12-15  0:48                           ` Andi Kleen
2000-12-15  1:25                             ` Harald Welte
2000-12-14 20:35                     ` ip_defrag is broken (was: Re: test12 lockups -- need feedback) Mohammad A. Haque
2000-12-14 20:23                       ` David S. Miller
2000-12-14 21:25                         ` Mohammad A. Haque
2000-12-14 22:50                           ` Mohammad A. Haque
2000-12-14 23:58                             ` Mohammad A. Haque
2000-12-15  8:52                             ` Jasper Spaans
2000-12-15  9:22                             ` Tom Leete
2000-12-15  2:25                         ` Tom Leete
2000-12-15 13:12                         ` Rusty Russell [this message]
2000-12-14 20:49             ` Bob_Tracy
  -- strict thread matches above, loose matches on Subject: below --
2000-12-14 22:39 Bob_Tracy

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