DragonFly BSD
DragonFly kernel List (threaded) for 2011-01
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Re: udp mpsafe

From: Peter Avalos <peter@xxxxxxxxxxxx>
Date: Sun, 16 Jan 2011 13:57:20 -1000
Mail-followup-to: kernel@crater.dragonflybsd.org

On Tue, Jan 11, 2011 at 07:30:12PM -0800, Matthew Dillon wrote:
> :Hi all,
> :
> :Please review the devel^2 ~ devel^5 (inclusive) at:
> :http://gitweb.dragonflybsd.org/~sephe/dragonfly.git/shortlog/refs/heads/devel
> :
> :Best Regards,
> :sephe
>     I'm going to ask Peter to run your fixes on theshell.  He's been having
>     UDP-related kqueue issues which might be fixed by this.

Within a few minutes of booting the system, I got this panic:
panic: assertion: &curthread->td_msgport == cpu_portfn(0) in

(kgdb) bt
#0  _get_mycpu (di=0xc06b4220) at ./machine/thread.h:83
#1  md_dumpsys (di=0xc06b4220) at /usr/src/sys/platform/pc32/i386/dump_machdep.c:263
#2  0xc01ab4a2 in dumpsys () at /usr/src/sys/kern/kern_shutdown.c:881
#3  0xc01aba62 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:388
#4  0xc01abd09 in panic (fmt=0xc03e410c "assertion: %s in %s") at /usr/src/sys/kern/kern_shutdown.c:787
#5  0xc0276871 in udp_ctlinput (msg=0xd6eb6bdc) at /usr/src/sys/netinet/udp_usrreq.c:674
#6  0xc0227214 in netmsg_service_loop (arg=0x0) at /usr/src/sys/net/netisr.c:306
#7  0xc01b4be4 in lwkt_deschedule_self (td=Cannot access memory at address 0x8
) at /usr/src/sys/kern/lwkt_thread.c:276
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Files can be downloaded from:


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