Date: Wed, 4 Aug 2004 11:20:22 -0400 (EDT) From: "Mike Jakubik" <mikej@rogers.com> To: "Kenneth Stailey" <kstailey@yahoo.com> Cc: freebsd-amd64@freebsd.org Subject: Re: Sudden crash Message-ID: <1399.66.11.183.182.1091632822.squirrel@66.11.183.182> In-Reply-To: <20040804140103.69280.qmail@web50601.mail.yahoo.com> References: <1157.66.11.183.182.1091541742.squirrel@66.11.183.182> <20040804140103.69280.qmail@web50601.mail.yahoo.com>
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Kenneth Stailey said: > --- Mike Jakubik <mikej@rogers.com> wrote: > >> Hi all, >> >> One of my AMD64 boxes decided to crash all of a sudden. It was running >> fine for a couple of weeks however, maybe its a hardware problem. The >> hardware is an Asus SK8. Regardless i thought i would post the details >> that i salvaged from the daily security log. >> >> Thanks. >> >> --- >> mail.xxx.com kernel log messages: >> > pid 603 (dovecot-auth), uid 0: exited on signal 10 (core dumped) >> > Sorry, need DDB option to print backtrace pid 15214 (dovecot-auth), >> > uid 0: exited on signal 10 (core dumped) Sorry, need DDB option to >> > print backtraceSorry, need DDB option to print backtraceSorry, need >> > DDB option to print backtrace pid 15328 (dovecot-auth), uid 0: exited >> > on signal 10 (core dumped) kernel trap 12 with interrupts disabled >> > >> > >> > Fatal trap 12: page fault while in kernel mode >> > fault virtual address = 0x48 >> > fault code = supervisor read, page not present >> > instruction pointer = 0x8:0xffffffff801e6b17 >> > stack pointer = 0x10:0xffffffff94c41ad0 >> > frame pointer = 0x10:0xffffff0012b10000 >> > code segment = base 0x0, limit 0xfffff, type 0x1b >> > = DPL 0, pres 1, long 1, def32 0, gran 1 >> > processor eflags = resume, IOPL = 0 >> > current process = 35 (swi8: clock) >> > trap number = 12 >> > panic: page fault >> > >> > syncing disks, buffers remaining... 3797 3797 Copyright (c) 1992-2004 >> 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 5.2-CURRENT #0: Thu Jun 24 11:55:40 EDT 2004 >> > root@mail.xxx.com:/usr/obj/usr/src/sys/MAIL -snip- > http://www.freebsd.org/releases/5.3R/todo.html > > << Problems persist with crashes and hangs under heavy load, especially > under > SMP. The recent introduction of full-scale preemption exasperated the > problem, > though it has been mitigated by a recently committed hack. Speculation on > the > source of the problem seems to center around races in critical section and > spinlock handling and nesting. This needs to be driven to root cause and > fixed > in order for 5.3 to be considered STABLE. >> I belive that preemption was not commited yet in my version. Thats 'FreeBSD 5.2-CURRENT #0: Thu Jun 24 11:55:40 EDT 2004'.
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