Subject: Fw: [Bug 80201] New: general protection fault: 0000 [#1] SMP (while using HTB)

From: Stephen Hemminger <[email-masked]>
Date: Mon, 14 Jul 2014 08:47:33 -0700

Begin forwarded message:

Date: Mon, 14 Jul 2014 04:12:45 -0700
From: "[email-masked]" <[email-masked]>
To: "[email-masked]" <[email-masked]>
Subject: [Bug 80201] New: general protection fault: 0000 [#1] SMP (while using HTB)

https://bugzilla.kernel.org/show_bug.cgi?id=80201

            Bug ID: 80201
           Summary: general protection fault: 0000 [#1] SMP (while using
                    HTB)
           Product: Networking
           Version: 2.5
    Kernel Version: Linux 3.10.41-1.el6.elrepo.x86_64
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
          Assignee: [email-masked]
          Reporter: [email-masked]
        Regression: No

Created attachment 142971
  --> https://bugzilla.kernel.org/attachment.cgi?id=142971&action=edit
Kernel GPF stack trace

Encountered GPF under normal circumstances - no heavy load (CPU, IO, net). 

HTB configuration is very simple: 1 HTB class with SFQ qdisc and filter on
source port 80:

tc qdisc add dev eth0 root handle 1: htb default 30
tc class add dev eth0 parent 1: classid 1:1 htb rate $LIMIT burst 1500k cburst
1500k
tc qdisc add dev eth0 parent 1:1 handle 10: sfq perturb 10
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip sport 80
0xffff flowid 1:1

Relevant part of vmcore-dmesg.txt attached.

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