Re: -CURRENT panics on intensive fs operations.

On Thu, Feb 22, 2007 at 10:07:45AM -0500, Alexandre Sunny Kovalenko wrote:
> On Tue, 2007-02-20 at 09:48 -0500, Alexandre "Sunny" Kovalenko wrote:
> > On Wed, 2007-02-14 at 20:14 -0500, Kris Kennaway wrote:
> > > On Wed, Feb 14, 2007 at 07:48:51PM -0500, Alexandre Sunny Kovalenko wrote:
> > > > On Tue, 2007-02-13 at 20:17 -0500, Kris Kennaway wrote:
> > > > > On Tue, Feb 13, 2007 at 08:02:39PM -0500, Alexandre Sunny Kovalenko wrote:
> > > > > > I can reliably panic -CURRENT (Feb 11, noon EST) with the something that
> > > > > > excersises the file system. I have currently settled on (cd /usr/ports;
> > > > > > make clean), but it all started out as doing some "emerges" to test the
> > > > > > latest linuxolator. In the case of the "make clean" I have seen it
> > > > > > crashing as early as /usr/ports/audio and as late
> > > > > > as /usr/ports/textproc. 
> > > > > > 
> I am still not capable to get good backtrace from the kernel dump, but I
> have managed to hook up remote console to this machine, so here are
> results:
> 
> db> bt
> Tracing pid 33 tid 100032 td 0xc4cee510
> kdb_enter(c067c69d) at kdb_enter+0x2b
> panic(c0667ba3,c306d5c0,c306d5c0,e38a2cfc,c0619fd9,...) at panic+0x11c
> vm_pageq_remove_nowakeup(c306d5c0,c061a0b8,e38a2d04,c061a0ee,e38a2d24,...) at vm_pageq_remove_nowakeup+0x35
> vm_page_zero_idle(e38a2d24,c04c7fe4,0,e38a2d38,c4ef8900,...) at
> vm_page_zero_idle+0x49
> vm_pagezero(0,e38a2d38) at vm_pagezero+0x36
> fork_exit(c061a0b8,0,e38a2d38) at fork_exit+0xac
> fork_trampoline() at fork_trampoline+0x8
> --- trap 0, eip = 0, esp = 0xe38a2d70, ebp = 0 ---
> db> ps
>   pid  ppid  pgrp   uid   state   wmesg     wchan    cmd
> <snip>
>    33     0     0     0  RL      CPU 0               [pagezero]
> <snip>
> 
> ... and (hopefully) relevant bits from the source
> (kgdb) list *vm_pageq_remove_nowakeup+0x35
> 0xc06192f9 is in vm_pageq_remove_nowakeup
> (/usr/src/sys/vm/vm_pageq.c:223).
> 218             struct vpgqueues *pq;
> 219
> 220             if (queue != PQ_NONE) {
> 221                     pq = &vm_page_queues[queue];
> 222                     VM_PAGE_SETQUEUE2(m, PQ_NONE);
> 223                     TAILQ_REMOVE(&pq->pl, m, pageq);
There, please, show the output of "p/x *m" and "p/x *pq".