netdev - Re: [Bugme-new] [Bug 11469] New: TUN with 1024 neighbours: ip6_dst_lookup

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Message-ID: <20080905114146.GA29408@2ka.mipt.ru>
Date:	Fri, 5 Sep 2008 15:41:50 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	netdev@...r.kernel.org, bugme-daemon@...zilla.kernel.org,
	rdenis@...phalempin.com
Subject: Re: [Bugme-new] [Bug 11469] New: TUN with 1024 neighbours: ip6_dst_lookup_tail NULL crash

Hi.

On Sun, Aug 31, 2008 at 11:13:04AM -0700, Andrew Morton (akpm@...ux-foundation.org) wrote:
> > When an IFF_TUN (/dev/net/tun) device has more than 1023 IPv6 neighbors, a
> > process context crash occurs. Backtrace follows:

Does this problem still exist?

> > BUG: unable to handle kernel NULL pointer dereference at 0000001d
> > IP: [<f8b375bf>] :ipv6:ip6_dst_lookup_tail+0x95/0x15a
> > *pde = 00000000
> > Oops: 0000 [#14] SMP
> > Modules linked in: ipx p8022 psnap llc p8023 i915 drm tun cpufreq_ondemand
> > binfmt_misc fuse nf_conntrack_ftp nf_conntrack_ipv6 nf_conntrack_ipv4
> > nf_conntrack ipv6 snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss
> > snd_mixer_oss snd_pcm snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event
> > snd_seq snd_timer snd_seq_device snd intel_agp psmouse soundcore agpgart button
> > processor snd_page_alloc parport_pc parport iTCO_wdt evdev pcspkr dm_mirror
> > dm_log dm_snapshot dm_mod sg sr_mod cdrom e100 mii ehci_hcd uhci_hcd usbcore
> > unix
> > 
> > Pid: 9950, comm: tunload Tainted: G      D   (2.6.26.3 #8)

By whom it was tainted?

-- 
	Evgeniy Polyakov
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