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

bugtracker-admin at leaf.dragonflybsd.org bugtracker-admin at leaf.dragonflybsd.org
Wed Jan 14 16:15:19 PST 2015

Issue #1388 has been updated by tuxillo.

Status changed from In Progress to Closed


I haven't been able to reproduce it (with the test I've tried)
Feel free to reopen it (or open a new one) if you think the issue is still there.

Antonio Huete

Bug #1388: m_copydata panic in vkernel

* Author: sepherosa
* Status: Closed
* 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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