Date: Thu, 03 May 2001 09:50:48 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Alexander Leidinger <Alexander@Leidinger.net> Cc: current@FreeBSD.org Subject: RE: trap12: page fault Message-ID: <XFMail.010503095048.jhb@FreeBSD.org> In-Reply-To: <200105031434.f43EYrG00732@Magelan.Leidinger.net>
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On 03-May-01 Alexander Leidinger wrote: > Hi, > > /sys from cvsup around 2pm CEST from cvsup3.de.freebsd.org (contains > npx.c fix). > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x54 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc01de7c3 > stack pointer = 0x10:0xd51cfd98 > frame pointer = 0x10:0xd51cfd98 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 6 (sh) > trap number = 12 > panic: page fault > syncing disks... > > No syncing of the disks happens, no coredump (dump device not configured > at this stage), hangs hard (need to press the reset button) after > printing "syncing disks...". Happens after printing "Routing Daemons:.", > before "Additional daemons: syslogd." > > It showed up the first time after the "eats FFS partitions for > breakfast" problem was fixed. I already removed > /sys/compile/<kernel_name>, so it didn't seems to be a stale object > file. > > dmesg from a working kernel and kernel config attached. Can you get a trace next time via the 'trace' command? The virtual fault address indicates a likely NULL pointer dereference. Also, have you built your kernel with debug symnbols (config -g or makeoptions DEBUG=-g do this)? If so, can you go to /sys/compile/<kernel_name>, run 'gdb -k kernel.debug' and then type 'l *0xc01de7c3' to see what source line it panic'd at? You may not need the '*' char in that. Thanks. -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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