Date: Sat, 24 Feb 2007 21:55:40 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: Alexandre Sunny Kovalenko <alex.kovalenko@verizon.net> Cc: current@freebsd.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: -CURRENT panics on intensive fs operations. Message-ID: <20070224195540.GB77131@deviant.kiev.zoral.com.ua> In-Reply-To: <1172156865.848.14.camel@RabbitsDen.RabbitsLawn.verizon.net> References: <1171414959.906.16.camel@RabbitsDen.RabbitsLawn.verizon.net> <20070214011755.GA73381@xor.obsecurity.org> <1171500531.780.6.camel@RabbitsDen.RabbitsLawn.verizon.net> <20070215011400.GA10455@xor.obsecurity.org> <1171982928.751.1.camel@RabbitsDen.RabbitsLawn.verizon.net> <1172156865.848.14.camel@RabbitsDen.RabbitsLawn.verizon.net>
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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 w=
rote:
> > > > On Tue, 2007-02-13 at 20:17 -0500, Kris Kennaway wrote:
> > > > > On Tue, Feb 13, 2007 at 08:02:39PM -0500, Alexandre Sunny Kovalen=
ko wrote:
> > > > > > I can reliably panic -CURRENT (Feb 11, noon EST) with the somet=
hing that
> > > > > > excersises the file system. I have currently settled on (cd /us=
r/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.=20
> > > > > >=20
> 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:
>=20
> 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 =3D 0, esp =3D 0xe38a2d70, ebp =3D 0 ---
> db> ps
> pid ppid pgrp uid state wmesg wchan cmd
> <snip>
> 33 0 0 0 RL CPU 0 [pagezero]
> <snip>
>=20
> ... 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 !=3D PQ_NONE) {
> 221 pq =3D &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".
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