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List: freebsd-bugs
Subject: kern/4186: nfsiod, panic, page fault in kernel mode (frequent)
From: Heikki Suonsivu <hsu () mail ! clinet ! fi>
Date: 1997-07-29 3:57:53
[Download RAW message or body]
>Number: 4186
>Category: kern
>Synopsis: nfsiod, panic, page fault in kernel mode (frequent)
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Jul 28 21:00:01 PDT 1997
>Last-Modified:
>Originator: Heikki Suonsivu
>Organization:
Clinet, Espoo, Finland
>Release: FreeBSD 2.2-STABLE i386
>Environment:
2.2-STABLE, upgraded to 20 th sup about a week ago.
>Description:
nfs clients seem to have become very unstable and keep locking up, usually
with a panic message on the console and sitting at "syncing disks". This
did not happen with sup from about a month ago.
Fatal trap 12: page fault while in kernel mode
fault virtual address: 0x87654371
fault code: supervisor read, page not present
instruction pointer: 0x8:0xf0131acf
stack pointer: 0x10:0xefbffd7c
frame pointer: 0x10:0xefbffd8c
code segment: base 0x0, limit 0xfffff, type 0x1b
DPL 0, pres 1, def 32 1, gran 1
processor eflags: interrupt enabled, resume, IOPL = 0
current process: 93 (nfsiod)
interupt mask: bio
panic: page fault
f013156c T _insmntque
f01315d8 T _vwakeup
f0131658 T _vinvalbuf
f0131890 T _bgetvp
f013192c T _brelvp
f01319bc T _pbgetvp
f0131a00 T _pbrelvp
f0131a3c T _reassignbuf
f0131b40 T _bdevvp
f0131bac T _checkalias
f0131cd8 T _vget
f0131dbc T _vref
f0131e04 T _vput
f0131e58 T _vrele
f0131f58 T _vflush
f013207c T _vclean
>How-To-Repeat:
Seems to happen often with heavy nfs use.
>Fix:
>Audit-Trail:
>Unformatted:
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