From mboxrd@z Thu Jan  1 00:00:00 1970
From: Florian Westphal <fw@strlen.de>
Subject: Re: BUG: soft lockup on kernel 5.19.9 when attempting FTP connections
Date: Tue, 20 Sep 2022 17:19:52 +0200
Message-ID: <20220920151952.GD30575@breakpoint.cc>
References: <b2f301f6-d335-04bd-43b2-001e5dcacc09@riosoft.com.br>
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To: Bruno de Paula Larini <bruno.larini@riosoft.com.br>
Cc: "netfilter@vger.kernel.org" <netfilter@vger.kernel.org>

Bruno de Paula Larini <bruno.larini@riosoft.com.br> wrote:
> Hi,
> While testing my iptables ruleset on a Fedora 36, I've encountered an
> unexpected behaviour regarding FTP connection forwarding.
> I've reduced the ruleset to look like below.
> I've tried to "modprobe nf_conntrack_ftp" alone, but external clients sti=
ll
> won't get data connections.
> Then I "modprobe nf_nat_ftp". It loads normally but after the first attem=
pt
> to establish an FTP connection, the system freezes and sometimes prints t=
he
> following message:
>=20
> Message from syslogd@fw1-test at Sep 20 09:33:28 ...
> =A0kernel:watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [swapper/1:0]

Thats all? No backtrace?