I have run into this in the past too, when a bad file was encountered on the
CD (home burned CDR).  The system did not shut down though, it just kept on
working.

Tom Veldhouse
ve...@visi.com

-----Original Message-----
From: Nick Hibma <nick.hi...@jrc.it>
To: FreeBSD current mailing list <freebsd-current@FreeBSD.ORG>
Date: Tuesday, March 16, 1999 12:40 PM
Subject: panic occurred: vm_fault


>
>In case someone who is interested in the following panic:
>
>Occurred under a lightly loaded system that was not doing anything apart
>from reading a CD (dd if=/dev/cd0c of=/dev/null bs=512).
>Kernel current as of yesterday.
>No core file is available unfortunately.
>
>
>panic: vm_fault: fault on nofault entry, addr: c35c6000
>(blabla about debugger)
>> show registers
>cs 0x8
>ds 0x10
>es 0x10
>ss 0x10
>eax 0x12
>ecx 0xc00b8f00
>edx 0xc024d1a4 db_lengths+0x11c
>ebx 0xc0248255
>__set_sysctl_set_sym_sysctl__vm_swap_async_max+0x1d9
>esp 0xc6f23ca8
>ebp 0xc6f23cb0
>esi 0x100
>edi 0xc35c6000
>eip 0xc020f993 Debugger+0x37
>efl 0x256
>> trace
>panic
>vm_fault
>trap_pfault
>trap
>calltrap()
>--- trap
>slow_copyout
>spec_read
>ufsspec_read
>ufs_vnoperatespec
>vn_read
>read
>syscall
>Xint0x80syscall
>
>
>--
>ISIS/STA, T.P.270, Joint Research Centre, 21020 Ispra, Italy
>
>
>
>
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