Date: Mon, 12 Dec 2005 13:24:41 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: Danilo Asara <danilo.asara@gmail.com>, David Xu <davidxu@freebsd.org> Subject: Re: Fatal trap 12: page fault while in kernel mode Message-ID: <200512121324.43169.jhb@freebsd.org> In-Reply-To: <1133993394.1426.2.camel@localhost> References: <1133993394.1426.2.camel@localhost>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday 07 December 2005 05:09 pm, Danilo Asara wrote:
> danilo@resolza [~]$ uname -a
> FreeBSD resolza.fastwebnet.it 6.0-STABLE FreeBSD 6.0-STABLE #0: Fri
> Nov18 11:19:38 CET
> root@resolza.fastwebnet.it:/usr/obj/usr/src/sys/RESOLZA i386
> danilo@resolza [~]$
>
>
> root@resolza [/usr/crash]# kgdb kernel.debug.0 vmcore.0
> [GDB will not be able to debug user-mode
> threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
> are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for
> details.
> This GDB was configured as "i386-marcel-freebsd".
>
> Unread portion of the kernel message buffer:
>
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address = 0x0
> fault code = supervisor read, page not present
> instruction pointer = 0x20:0xc0500411
> stack pointer = 0x28:0xef58fcac
> frame pointer = 0x28:0xef58fcdc
> 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 = 722 (artsd)
> trap number = 12
> panic: page fault
> cpuid = 0
> KDB: stack backtrace:
> kdb_backtrace(100,c2a83a80,28,ef58fc6c,c) at kdb_backtrace+0x29
> panic(c06b2fec,c06d9f5b,0,fffff,c09b) at panic+0x114
> trap_fatal(ef58fc6c,0,c2a83a80,c2890bb8,c) at trap_fatal+0x2ca
> trap_pfault(ef58fc6c,0,0) at trap_pfault+0x1d7
> trap(8,28,28,c2ea9e70,c2a83a80) at trap+0x2fd
> calltrap() at calltrap+0x5
> --- trap 0xc, eip = 0xc0500411, esp = 0xef58fcac, ebp = 0xef58fcdc ---
> kse_release(c2a83a80,ef58fd04,1,0,200292) at kse_release+0x165
> syscall(3b,3b,3b,80f2100,81) at syscall+0x2bf
> Xint0x80_syscall() at Xint0x80_syscall+0x1f
> --- syscall (383, FreeBSD ELF32, kse_release), eip = 0x287d81af, esp =
> 0xbf9fef30, ebp = 0xbf9fef8c ---
> Uptime: 12h9m20s
> Dumping 1023 MB (2 chunks)
> chunk 0: 1MB (159 pages) ... ok
> chunk 1: 1023MB (261872 pages) 1007 991 975 959 943 927 911 895 879
> 863 847 831 815 799 783 767 751 735 719 703 687 671 655 639 623 607 591
> 575 559 543 527 511 495 479 463 447 431 415 399 383 367 351 335 319 303
> 287 271 255 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15
>
> #0 doadump () at pcpu.h:165
> 165 pcpu.h: No such file or directory.
> in pcpu.h
> (kgdb) where
> #0 doadump () at pcpu.h:165
> #1 0xc05132bf in boot (howto=260)
> at /usr/src/sys/kern/kern_shutdown.c:399
> #2 0xc0513615 in panic (fmt=0xc06b2fec "%s")
> at /usr/src/sys/kern/kern_shutdown.c:555
> #3 0xc068d8ca in trap_fatal (frame=0xef58fc6c, eva=0)
> at /usr/src/sys/i386/i386/trap.c:831
> #4 0xc068d5d7 in trap_pfault (frame=0xef58fc6c, usermode=0, eva=0)
> at /usr/src/sys/i386/i386/trap.c:742
> #5 0xc068d1ed in trap (frame=
> {tf_fs = 8, tf_es = 40, tf_ds = 40, tf_edi = -1024811408, tf_esi =
> -1029162368, tf_ebp = -279380772, tf_isp = -279380840, tf_ebx =
> -1026066384, tf_edx = -1029162368, tf_ecx = -1026066303, tf_eax = 0,
> tf_trapno = 12, tf_err = 0, tf_eip = -1068497903, tf_cs = 32, tf_eflags
> = 2687622, tf_esp = -1036728832, tf_ss = 30})
> at /usr/src/sys/i386/i386/trap.c:432
> #6 0xc067aaca in calltrap () at /usr/src/sys/i386/i386/exception.s:139
> #7 0xc0500411 in kse_release (td=0xc2a83a80, uap=0xef58fd04)
> at /usr/src/sys/kern/kern_kse.c:428
The problem is here. You can try posting this to threads@FreeBSD.org and see
if someone there can help you debug this further.
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve" = http://www.FreeBSD.org
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200512121324.43169.jhb>