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[DragonFlyBSD - Bug #1824] (Feedback) kernel panic, x86,

From: "Antonio M. Huete Jimenez via Redmine" <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>
Date: Sun, 10 Mar 2013 07:49:35 -0700

Issue #1824 has been updated by tuxillo.

Description updated
Status changed from New to Feedback
Assignee deleted (0)

Hi Adam,

Did you have a chance to try what Matt said? Can you please provide feedback about it?

Antonio Huete
Bug #1824: kernel panic, x86,

Author: akirchhoff135014
Status: Feedback
Priority: Normal
Target version: 

SMP enabled, otherwise a GENERIC kernel.  

Full backtrace:

(kgdb) bt
#0  _get_mycpu (di=0xc06ebee0) at ./machine/thread.h:83
#1  md_dumpsys (di=0xc06ebee0) at 
#2  0xc0315d31 in dumpsys () at /usr/src/sys/kern/kern_shutdown.c:880
#3  0xc03162f1 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:387
#4  0xc03165ba in panic (fmt=0xc06122c4 "m_copym, length > size of mbuf 
    at /usr/src/sys/kern/kern_shutdown.c:786
#5  0xc034f662 in m_copym (m=0x0, off0=32, len=24, wait=4) at 
#6  0xc03ec2e6 in tcp_output (tp=0xdcc96d88) at 
#7  0xc03f38da in tcp_usr_send (so=0xc6a73698, flags=<value optimized out>, 
m=0xe20ca900, nam=0x0, control=0x0, 
    td=0xdcc96988) at /usr/src/sys/netinet/tcp_usrreq.c:762
#8  0xc03518a4 in netmsg_pru_send (msg=0xe5c15b5c) at 
#9  0xc03a4674 in netmsg_service (msg=0xe5c15b5c, mpsafe_mode=1, mplocked=0) 
at /usr/src/sys/net/netisr.c:310
#10 0xc03a478a in netmsg_service_loop (arg=0xc068cda0) at 
#11 0xc031f2ae in lwkt_deschedule_self (td=Cannot access memory at address 0x8
) at /usr/src/sys/kern/lwkt_thread.c:278
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

I was building some packages in the background at the time.  I was ssh'ed in 
from a linux box, and running x2x to allow me to move the mouse and keyboard 
from the linux box to the DF box.  At the time of the lock up, I was moving 
the mouse around on the DF box.  Though I have no idea if that's related to 
the crash, that's the only thing that comes to mind.


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