linux-kernel - Re: Soft lockup on shutdown in nf_ct_iterate

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]

Date:	Wed, 28 Feb 2007 19:09:13 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Chuck Ebbert <cebbert@...hat.com>
CC:	netfilter-devel@...ts.netfilter.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Soft lockup on shutdown in nf_ct_iterate_cleanup()

Chuck Ebbert wrote:
> Patrick McHardy wrote:
> 
>>This patch is against current stable-2.6.20, it applies
>>cleanly to 2.6.20 as well.
>
>
> Everything works OK, but I get:
> 
> BUG: warning: (!list_empty(&unconfirmed)) at
> net/netfilter/nf_conntrack_core.c:1068/nf_ct_cleanup()
> 
> <> nf_ct_cleanup+0x66/0x122 [nf_conntrack]
> <> kill_l4proto+0x0 [nf_conntrack]
> <> nf_conntrack_l4proto_unregister+0x7d/0x82 [nf_conntrack]
> <> nf_conntrack_l3proto_ipv4_fini+0x3c/0x46 [nf_conntrack_ipv4]
> <> sys_delete_module+0x18a/0x1b1


Thanks, the previous approach doesn't seem to work properly without
unpleasant event cache hacks. This patch takes a simpler approach
and keeps the unconfirmed list iteration, but makes sure to make
forward progress.


View attachment "x" of type "text/plain" (3703 bytes)