Panic in recent 7.2-Stable

Thierry Herbelot thierry.herbelot at
Sun Sep 6 09:21:23 UTC 2009


I'm having a panic with the latest kernel build of my -Stable file server 
(sources cvsupped around yesterday evening, CEST). The panic happens soon 
after entering multi-user :

panic: vm_phys_paddr_to_vm_page: paddr 0xf0000 is not in any segment
KDB: enter: panic
[thread pid 1005 tid 100154 ]
Stopped at      kdb_enter_why+0x3a:     movl    $0,kdb_why
db> where
Tracing pid 1005 tid 100154 td 0x8ecad480
kdb_enter_why(80ba731f,80ba731f,80bc1ad6,fb301a94,fb301a94,...) at 
panic(80bc1ad6,f0000,0,8ecad480,0,...) at panic+0xd1
vm_phys_paddr_to_vm_page(f0000,f0000,fb301ad8,1,80a36a78,...) at 
dev_pager_getpages(92b8d980,fb301c04,1,0,fb301bcc,...) at 
vm_fault(89267bfc,33d90000,1,0,89b0b50c,...) at vm_fault+0x1020
trap_pfault(202,7,8583b900,80cd9800,89b0eb00,...) at trap_pfault+0x15b
trap(fb301d38) at trap+0x247

An excerpt of the dmesg is :

Copyright (c) 1992-2009 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 7.2-STABLE #35: Sun Sep  6 10:04:40 CEST 2009
    XXX at YYY:/usr/obj/usr/src/sys/GENERIC
Preloaded elf kernel "/boot/kernel/kernel" at 0x8101a000.
Preloaded elf module "/boot/kernel/zfs.ko" at 0x8101a188.
Preloaded elf module "/boot/kernel/opensolaris.ko" at 0x8101a230.
Preloaded elf module "/boot/kernel/snd_cmi.ko" at 0x8101a2e0.
Preloaded elf module "/boot/kernel/sound.ko" at 0x8101a38c.
Preloaded /boot/zfs/zpool.cache "/boot/zfs/zpool.cache" at 0x8101a438.
Preloaded elf module "/boot/kernel/acpi.ko" at 0x8101a490.

The previous kernel is older (around 22 august) and works as expected.

Some idents for the panic kernel are : (ie after SVN rev 196838)
$FreeBSD: src/sys/i386/i386/pmap.c,v 1.594.2.20 2009/09/04 19:59:32 jhb Exp $
$FreeBSD: src/sys/kern/kern_mbuf.c,v 2009/09/04 19:59:32 jhb Exp $
$FreeBSD: src/sys/vm/device_pager.c,v 2009/09/04 19:59:32 jhb Exp $
$FreeBSD: src/sys/vm/vm_object.c,v 1.385.2.7 2009/09/04 19:59:32 jhb Exp $
$FreeBSD: src/sys/vm/vm_page.c,v 1.357.2.10 2009/09/04 19:59:32 jhb Exp $
$FreeBSD: src/sys/vm/vm_phys.c,v 2009/09/04 19:59:32 jhb Exp $



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