[DragonFlyBSD - Bug #1388] (In Progress) m_copydata panic in vkernel

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #1388 has been updated by tuxillo.

Description updated
Category set to Kernel
Status changed from New to In Progress
Assignee deleted (0)
Target version set to 3.8.0

Hi,

Was this running a particular test or running all the tests?

Cheers,
Antonio Huete

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Bug #1388: m_copydata panic in vkernel
http://bugs.dragonflybsd.org/issues/1388#change-11727

* Author: sepherosa
* Status: In Progress
* Priority: Normal
* Assignee: 
* Category: Kernel
* Target version: 3.8.0
----------------------------------------
On Mon, May 25, 2009 at 1:07 AM, Matthew Dillon
<dillon at apollo.backplane.com> wrote:
>    While running stress2 using trevorjk's vkernel setup with the
>    latest head as of last night (after my second round of pthread
>    fixes for the vkernel) I got a mbuf panic:

Hoho, I tried to reproduce it in real kernel but failed in the last two days :P
I will try vkernel today.

>
>    panic: m_copydata, negative off -1
>    mp_lock = 00000001; cpuid = 1
>    Trace beginning at frame 0x57a9ea04
>    panic(57a9ea28,c,0,579218c0,57a9ea38) at 0x80bb436
>    panic(823d90d,ffffffff,c,0,579218c0) at 0x80bb436
>    m_copydata(0,ffffffff,1,59305dbc,0) at 0x80eacdc
>    tcp_output(579218c0,59305d18,57a9eb44,59305d9c,59305d88) at 0x815e3bc
>    tcp_input(59305d00,14,6,59305d00,584aae20) at 0x815d29a
>    ip_reass(283a0150,14,0,0,0) at 0x8153362
>    ip_input(59305d00,57a9ed60,8136b31,59305d18,1) at 0x8154a73
>    ip_input(59305d18,1,8342c68,57a9ed84,8160775) at 0x8154aa7
>    netmsg_service(59305d18,1,0,1,414003b8) at 0x8136b31
>    tcpmsg_service_loop(0,0,0,0,0) at 0x8160775
>    Debugger("panic")
>
>    The vkernel is bring run on my 2xCPU test box, configured -n 2 -m 128m.
>
>                                        -Matt
>                                        Matthew Dillon
>                                        <dillon at backplane.com>
>



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