netdev - kernel panic TPROXY , vanilla 4.7.1

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Message-ID: <627722c51d9ce454dfaf1a79519ceb59@nuclearcat.com>
Date:	Wed, 17 Aug 2016 17:31:20 +0300
From:	Denys Fedoryshchenko <nuclearcat@...learcat.com>
To:	Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: kernel panic TPROXY , vanilla 4.7.1

Hi!

Tried to run squid on latest kernel, and hit a panic
Sometimes it just shows warning in dmesg (but doesnt work properly)
[   75.701666] IPv4: Attempt to release TCP socket in state 10 
ffff88102d430780
[   83.866974] squid (2700) used greatest stack depth: 12912 bytes left
[   87.506644] IPv4: Attempt to release TCP socket in state 10 
ffff880078a48780
[  114.704295] IPv4: Attempt to release TCP socket in state 10 
ffff881029f8ad00

I cannot catch yet oops/panic message, netconsole not working.

After triggering warning message 3 times, i am unable to run squid 
anymore (without reboot), and in netstat it doesnt show port running.

firewall is:
*mangle
-A PREROUTING -p tcp -m socket -j DIVERT
-A PREROUTING -p tcp -m tcp --dport 80 -i eno1 -j TPROXY --on-port 3129 
--on-ip 0.0.0.0 --tproxy-mark 0x1/0x1
-A DIVERT -j MARK --set-xmark 0x1/0xffffffff
-A DIVERT -j ACCEPT

routing
ip rule add fwmark 1 lookup 100
ip route add local default dev eno1 table 100


squid config is default with tproxy option
http_port 3129 tproxy