DragonFly BSD
DragonFly bugs List (threaded) for 2010-09
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Re: kernel panic, x86,

From: Adam K Kirchhoff <akirchhoff135014@xxxxxxxxxxx>
Date: Tue, 7 Sep 2010 20:20:19 -0400

On Tuesday 07 September 2010 19:22:57 Adam K Kirchhoff wrote:
> 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
> /usr/src/sys/platform/pc32/i386/dump_machdep.c:263
> #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
> chain")
>     at /usr/src/sys/kern/kern_shutdown.c:786
> #5  0xc034f662 in m_copym (m=0x0, off0=32, len=24, wait=4) at
> /usr/src/sys/kern/uipc_mbuf.c:1113
> #6  0xc03ec2e6 in tcp_output (tp=0xdcc96d88) at
> /usr/src/sys/netinet/tcp_output.c:723
> #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
> /usr/src/sys/kern/uipc_msg.c:548
> #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
> /usr/src/sys/net/netisr.c:357
> #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.
> Adam

The kernel and core are in my ~/crash folder on leaf.


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