Date: Thu, 20 Nov 1997 10:25:02 -0800 (PST) From: Tom Bartol <bartol@salk.edu> To: freebsd-current@freebsd.org Subject: Pine crashes -current with page fault while in kernel mode Message-ID: <Pine.BSF.3.96.971120095148.288B-100000@dale.salk.edu>
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Hi,
I've been seeing this crash for a while now but only yesterday was I
finally able to see useful output on the console and get into ddb to help
track this one down.
I'm running -current as of 11/19 (~21:00 PST) on a 300MHz Pentium II with
128 MB RAM, 2940UW SCSI, and Intel EtherExpress Pro/100B. Pine will
reliably crash my system while scrolling through any long e-mail message
that I am in the process of composing (and never while viewing any long
messages that I have received). This occurs regardless of whether pine is
running in an xterm or vt. /var/mail is an NFSv3 mounted filesystem
located on an Auspex fileserver (network is fully switched
100BaseT/full-duplex, not trying to brag but it is very nice!).
I'm not a ddb wiz but I was able to write down on paper the following
info from ddb following the crash:
panic: vm_fault: fault on nofault entry, addr: f35b3000
Dubugger("panic")
Stopped at _Debugger+0x35: movb $0,_in_Debugger.98
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x65007870
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf01b3380
stack pointer = 0x10:0xf540aab8
frame pointer = 0x10:0xf540aac8
code segment = base 0x10, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 229 (pine)
interrupt mask =
kernel: type 12 trap, code = 0
Stopped at _Debugger+0x35: movb $0,_in_Debugger.98
a "show trace" seemed to indicate the trap occurred just after an
nfs_write.
If there are any commands I could execute in ddb to get additional
useful information about the crash please let me know so I can help
get this one fixed!
Many thanks for your help,
Tom
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