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Date:      Sun, 29 Aug 2004 21:58:19 -0400
From:      Joe Marcus Clarke <marcus@marcuscom.com>
To:        current@freebsd.org
Subject:   Panic on 6.0 building ports
Message-ID:  <1093831099.61516.30.camel@shumai.marcuscom.com>

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On my Tinderbox machine (similar in operation to pointyhat), I was
building packages for 4.10-RELEASE and 5.2.1-RELEASE, and the machine
panicked.  This is a single-CPU Pentium 4 with 2 GB of RAM.  The drive
being used for builds is a Maxtor SATA drive connected to a Promise SATA
controller.

Here is the manually transcribed panic and trace:

Fatal trap 12: page fault while in kernel mode
cpuid =3D 0; apic id =3D 00
fault virtual address	=3D 0x1c
fault code		=3D supervisor write, page not present
instruction pointer	=3D 0x8:0xc0533d07
stack pointer		=3D 0x10:0xf5f30a4c
frame pointer		=3D 0x10:0xf5f30a58
code segment		=3D base 0x0, limit 0xfffff, type 0x1b
			=3D DPL 0, pres 1, def32 1, gran 1
processor eflags	=3D interrupt enabled, resume, IOPL =3D 0
current process		=3D 27441 (cpp0)
Stopped at  vfs_vmio_release+0x1b: lock cmpxchgl %ecx,0x1c(%edx)

vfs_vmio_release(dc1fee68) at vfs_vmio_release+0x1b
getnewbuf(0,0,4000,4000,1c000) at getnewbuf+0x2b6
getblk(c8103210,7,0,4000,0) at getblk+0x400
cluster_read(c8103210,7,0,4000,0) at cluster_read+0xde
ffs_read(f5f30c14) at ffs_read+0x25e
vm_read(c3834e58,f5f30c88,c484f880,0,c5877160) at vn_read+0x178
dofileread(c5877160,c3834e58,7,814f000,2f2ed) at dofileread+0x95
read(c5877160,f5f30d14,3,4,293) at read+0x3b
syscall(2f,2f,2f,814f000,2f2ed) at syscall+0x287
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (3, FreeBSD ELF32, read) eip =3D 0x8064924, esp =3D 0xbfbfd394,=
 ebp =3D 0xbfbfd3c0 ---

The machine is running:

FreeBSD fugu.marcuscom.com 6.0-CURRENT FreeBSD 6.0-CURRENT #0: Sun Aug
29 01:02:18 EDT 2004   =20
root@new-fugu.marcuscom.com:/space2/obj/usr/src/sys/FUGU  i386

Joe

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PGP Key : http://www.marcuscom.com/pgp.asc

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