Re: LWKT_WAIT_IPIQ panic

["Steve O'Hara-Smith" <steve@xxxxxxxxxx>]

	Hi,

	With a UP kernel I'm getting this message at about the rate the SMP
kernel was panicking.

 thr_umtx_wait: FAULT VALUE CHANGE 7366 -> 7367 oncond 0x284e0074


On Tue, 8 Mar 2011 10:22:35 +0000
"Steve O'Hara-Smith" <steve@sohara.org> wrote:

> 	Hi,
> 
> 	With an update to  v2.9.1.845.gc7506-DEVELOPMENT these panics have
> become quite frequent (several times a day).
> 
> 	I finally got a dump out of one of the crashes - it's packed up at
> 
> 	http://www.sohara.org/crash.tgz
> 
> 	For the time being I'm running the box with a UP kernel in the
> hope that it will be stable.
> 
> On Thu, 3 Mar 2011 07:51:23 +0000
> "Steve O'Hara-Smith" <steve@sohara.org> wrote:
> 
> > On Wed, 23 Feb 2011 18:07:29 +0000
> > "Steve O'Hara-Smith" <steve@sohara.org> wrote:
> > 
> > > 	Hi,
> > > 
> > > 	I just got an LWKT_WAIT_IPIQ panic on a box running head from
> > > this morning (UK time). hand copied trace
> > 
> > 	I'm getting these at random intervals usually at least once a
> > day. I'm also seeing ssh stalls on ipv6 connections to the box (but not
> > on ipv4) and a boot time message:
> > 
> > clist_alloc_cblocks: M_NOWAIT kmalloc failed, trying M_WAITOK
> > 
> > 	I've no idea whether or not these things are related but they
> > all started about the same time:
> > 
> > > LWKT_WAIT_IPIQ WARNING! 0 wait 0 (-1)
> > > panic: LWKT)WAIT_IPIQ
> > > cpuid = 0
> > > Trace beginning at frame 0xd6696cb0
> > > panic (ffffffff) at panic + 0x164
> > > panic (c040bf26, deadc0de, c67096a0, ff000000)
> > > lwkt_wait_ipiq (deadc0de, 1, deadc0de, c01e5c34, c67096a0) at
> > > lwkt_wait_ipiq + 0x93
> > > callout_stop (c670960a) at callout_stop + 0xe3
> > > callout_reset (...)
> > > filt_timer_expire (...)
> > > softclock_handler (...)
> > > lwkt_exit()
> > > 
> > > 	The box is running a vinum RAID0 on a couple of terabyte
> > > drives with a Hammer filesystem on the mirror, an SSD for the OS and
> > > swap (16GB with swapcache enabled) and three vkernel environments
> > > running various services (incoming mail + dovecot, IPV6 tunnel
> > > termination with pf firewall, thttpd web server) as well as NFS
> > > exports and mediatomb running on the host. It's an Asus M4A78L-M
> > > motherboard with an AMD Phenom II X4 955 and 4GB of memory
> > 
> 
> 


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