Subject: NetBSD 1.5Y of Oct 3 panics
To: None <>
From: Staffan =?iso-8859-1?Q?Thom=E9n?= <>
List: port-alpha
Date: 10/16/2001 11:25:47
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

  My AlphaPC164 has gotten into the bad habit of panicing after my update to
  1.5Y on the 3:rd of October. It has done so twice under some (not idle)=
  network/filesystem load.

  I didn't manage to get a dump for some reason the first time, but these
  are the messages I caught in dmesg.

--- 8< ---

panic: kernel diagnostic assertion "pcg->pcg_objects[idx] =3D=3D NULL" fail=
file "../../../../kern/subr_pool.c", line 1646

syncing disks... 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18
giving up

dumping to dev 8,1 offset 536001
dump i/o error

sd0(ahc0:0:2:0): polling command not done
panic: scsipi_execute_xs

dumping to dev 8,1 offset 536001
dump device not ready

--- 8< ---
  On the second occasion, I had the presence of mind to do a trace, and also
  received a dump. Tell me if you want it or what you want me to do with it.

  Trace as follows

--- 8< ---

panic: softdep_pageiodone: resid < 0, vp 0xfffffc0007a299a0 lbn 0x0 pcbp 0x=
Stopped in pid 147 (nfsd) at   cpu_Debugger+0x4:        ret     zero,(ra)
db> t
cpu_Debugger() at cpu_Debugger+0x4
panic() at panic+0x15c
softdep_pageiodone() at softdep_pageiodone+0x188
uvm_aio_aiodone() at uvm_aio_aiodone+0xe4
ltsleep() at ltsleep+0x318
genfs_gop_write() at genfs_gop_write+0x454
*ABS*() at      0x4

CPU 0: fatal kernel trap:

CPU 0   trap entry      =3D 0x2 (memory management fault)
CPU 0   a0              =3D 0x0
CPU 0   a1              =3D 0x1
CPU 0   a2              =3D 0x0
CPU 0   pc              =3D 0xfffffc00004e54f0
CPU 0   ra              =3D 0xfffffc00004e5410
CPU 0   pv              =3D 0xfffffc0000325500
CPU 0   curproc         =3D 0xfffffc00034b6b68
CPU 0           pid =3D 147, comm =3D nfsd

Caught exception in ddb.

db> sync
syncing disks... ex0: splistptr was 0
panic lockmgr: locking against myself
Stopped in pid 147 (nfsd) at    cpu_Debugger+0x4:       ret     zero,(ra)
db> sync

dumping to dev 8,1 offset 536001

--- 8< ---

  If you want, I can make the dump available if anyone wishes to have a loo=
  or tell me what to do.
  The box has worked *perfectly* up til these two occasions.


-- Staffan Thom=E9n (0x00C37E1F) ------------------------------------------=
Totally illogical, there was no chance.
		-- Spock, "The Galileo Seven", stardate 2822.3

Content-Type: application/pgp-signature
Content-Disposition: inline

Version: PGPfreeware 5.0i for non-commercial use
MessageID: +z2/Ns6FYTJ6HRfV+RhK3CqNzeDRzNn9