netdev - Re: Linux kernel error stack

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Message-ID: <CAPgF-fp46g1S6-uqpOg8dSnuMmQ9js5NXGp0zA_M2Uk_FfhEiA@mail.gmail.com>
Date:   Sun, 5 Aug 2018 15:54:21 -0400
From:   Satish Patel <satish.txt@...il.com>
To:     Florian Westphal <fw@...len.de>
Cc:     netdev@...r.kernel.org
Subject: Re: Linux kernel error stack

I have following kernel logging set.

[root@...ack-infra-02 tools]# cat /proc/sys/kernel/printk
3 4 1 3


iptables output

[root@...ack-infra-02 tools]# iptables-save -c
# Generated by iptables-save v1.4.21 on Sun Aug  5 15:52:56 2018
*raw
:PREROUTING ACCEPT [42284573:38782693391]
:OUTPUT ACCEPT [219668:42675751]
COMMIT
# Completed on Sun Aug  5 15:52:56 2018
# Generated by iptables-save v1.4.21 on Sun Aug  5 15:52:56 2018
*nat
:PREROUTING ACCEPT [656413:38450886]
:INPUT ACCEPT [5524:564390]
:OUTPUT ACCEPT [3217:212903]
:POSTROUTING ACCEPT [559058:34193539]
[5197:311820] -A POSTROUTING -s 10.0.3.0/24 ! -d 10.0.3.0/24 -j MASQUERADE
COMMIT
# Completed on Sun Aug  5 15:52:56 2018
# Generated by iptables-save v1.4.21 on Sun Aug  5 15:52:56 2018
*mangle
:PREROUTING ACCEPT [42209568:38687818558]
:INPUT ACCEPT [170634:197796840]
:FORWARD ACCEPT [42939243:38526139954]
:OUTPUT ACCEPT [198956:41288636]
:POSTROUTING ACCEPT [43138199:38567428590]
[84166:59495417] -A POSTROUTING -p tcp -m tcp --sport 80 -j CHECKSUM
--checksum-fill
[68739:5153476] -A POSTROUTING -p tcp -m tcp --sport 8000 -j CHECKSUM
--checksum-fill
[755:275452] -A POSTROUTING -s 10.0.3.0/24 -o lxcbr0 -p udp -m udp
--dport 68 -j CHECKSUM --checksum-fill
COMMIT
# Completed on Sun Aug  5 15:52:56 2018
# Generated by iptables-save v1.4.21 on Sun Aug  5 15:52:56 2018
*filter
:INPUT ACCEPT [164954:197217701]
:FORWARD ACCEPT [42801701:38377075499]
:OUTPUT ACCEPT [198963:41289860]
[0:0] -A INPUT -i lxcbr0 -p tcp -m tcp --dport 53 -j ACCEPT
[4932:328918] -A INPUT -i lxcbr0 -p udp -m udp --dport 53 -j ACCEPT
[0:0] -A INPUT -i lxcbr0 -p tcp -m tcp --dport 67 -j ACCEPT
[755:250585] -A INPUT -i lxcbr0 -p udp -m udp --dport 67 -j ACCEPT
[80745:145594351] -A FORWARD -o lxcbr0 -j ACCEPT
[56801:3471569] -A FORWARD -i lxcbr0 -j ACCEPT
COMMIT
# Completed on Sun Aug  5 15:52:56 2018

On Sun, Aug 5, 2018 at 3:42 PM, Florian Westphal <fw@...len.de> wrote:
> Satish Patel <satish.txt@...il.com> wrote:
>> Thanks Florian,
>>
>> FYI, I don't have any CHECKSUM configure in my iptables,
>
> You have, according to WARN stacktrace you provided.
>
> iptables-save -c
> ip6tables-save -c