Date: Tue, 3 Jan 2006 13:41:21 +0100 (CET) From: Lukas Ertl <le@FreeBSD.org> To: Ludo Koren <lk@tempest.sk> Cc: freebsd-stable@FreeBSD.org, freebsd-geom@FreeBSD.org Subject: Re: gvinum: adding plex and subdisks to existing volume panic Message-ID: <20060103133952.U45962@pcle2.cc.univie.ac.at> In-Reply-To: <200512221207.jBMC7WfC007322@lk.tempest.sk> References: <8764pi7778.fsf@lk.tempest.sk> <Pine.WNT.4.64.0512211748400.3452@korben> <87u0d25fw1.fsf@lk.tempest.sk> <Pine.WNT.4.64.0512212205310.3700@korben> <200512221207.jBMC7WfC007322@lk.tempest.sk>
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On Thu, 22 Dec 2005, Ludo Koren wrote:
> Fatal trap 12: page fault while in kernel mode
> fault virtual address = 0x40
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc07339c9
> stack pointer = 0x10:0xe5f9e840
> frame pointer = 0x10:0xe5f9e848
> 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 = 2 (g_event)
> trap number = 12
> panic: page fault
> Uptime: 2m32s
> Dumping 1022 MB
> 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 352 368 384 400 416 432 448 464 480 496 512 528 544 560 576 592 608 624 640 656 672 688 704 720 736 752 768 784 800 816 832 848 864 880 896 912 928 944 960 976 992 1008
>
> #0 doadump () at pcpu.h:160
> 160 pcpu.h: No such file or directory.
> in pcpu.h
> (kgdb) add-symbol-file /usr/src/sys/modules/geom/geom_vinum/geom_vinum.ko 0xc072 a9b8
> add symbol table from file "/usr/src/sys/modules/geom/geom_vinum/geom_vinum.ko" at
> .text_addr = 0xc072a9b8
> (y or n) y
> Reading symbols from /usr/src/sys/modules/geom/geom_vinum/geom_vinum.ko...done.
> (kgdb) bt
> #0 doadump () at pcpu.h:160
> #1 0xc04eaf44 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:412
> #2 0xc04eb1d8 in panic (fmt=0xc060fcbc "%s")
> at /usr/src/sys/kern/kern_shutdown.c:568
> #3 0xc05ec2f0 in trap_fatal (frame=0xe5f9e800, eva=64)
> at /usr/src/sys/i386/i386/trap.c:822
> #4 0xc05ec057 in trap_pfault (frame=0xe5f9e800, usermode=0, eva=64)
> at /usr/src/sys/i386/i386/trap.c:737
> #5 0xc05ebcb9 in trap (frame=
> {tf_fs = -1040646120, tf_es = -1037893616, tf_ds = -1038024688, tf_edi = -1038012416, tf_esi = 0, tf_ebp = -436606904, tf_isp = -436606932, tf_ebx = -1038077952, tf_edx = 1, tf_ecx = -1066995504, tf_eax = 0, tf_trapno = 12, tf_err = 0, tf_eip = -1066190391, tf_cs = 8, tf_eflags = 66182, tf_esp = -1038077952, tf_ss = -1038516864}) at /usr/src/sys/i386/i386/trap.c:427
> #6 0xc05dc52a in calltrap () at /usr/src/sys/i386/i386/exception.s:140
> #7 0xc1f90018 in ?? ()
> #8 0xc2230010 in ?? ()
> #9 0xc2210010 in ?? ()
I'm afraid that doesn't help me, either, as you can see there's no
debugging information in there (the "??" question marks should be
function calls actually).
Apparently there's a NULL pointer deref somewhere, I'll try to track it
down on my own.
Thanks,
le
--
Lukas Ertl http://homepage.univie.ac.at/l.ertl/
le@FreeBSD.org http://people.freebsd.org/~le/
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