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Date:      Thu, 14 Feb 2013 21:39:54 +0100
From:      David Demelier <demelier.david@gmail.com>
To:        freebsd-stable@freebsd.org
Cc:        Ronald Klop <ronald-freebsd8@klop.yi.org>
Subject:   Re: Panic at shutdown
Message-ID:  <3573487.tLQXrFnTMD@melon.malikania.fr>
In-Reply-To: <op.wseugbnu8527sy@212-182-167-131.ip.telfort.nl>
References:  <51127767.1030007@gmail.com> <2872289.1yXr0e1VeO@melon.malikania.fr> <op.wseugbnu8527sy@212-182-167-131.ip.telfort.nl>
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Le mardi 12 février 2013 21:42:01 Ronald Klop a écrit :
> On Tue, 12 Feb 2013 19:44:49 +0100, David Demelier
> 
> <demelier.david@gmail.com> wrote:
> > Le mardi 12 février 2013 10:01:10 Andriy Gapon a écrit :
> >> on 12/02/2013 09:57 David Demelier said the following:
> >> > Yes I have added debugging option in my kernel. I have makeoptions
> >> > DEBUG=-g in my config. Do I need more ?
> >> 
> >> .symbols?
> > 
> > I don't understand what you are saying, I have
> > /boot/kernel/kernel.symbols.
> > Please tell me what I'm doing wrong. I've just read and done the steps
> > written
> > there :
> > 
> > http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-
> > gdb.html
> > 
> > So I've run
> > 
> > # cd /usr/obj/usr/src/sys/Melon
> > # kgdb kernel.debug /var/crash/vmcore.0
> 
> Why not something like kgdb /boot/kernel/kernel.symbols
> /var/crash/vmcore.0?
> That looks like what the manual page of kgdb seems to suggest.
> 
> Regards,
> Ronald.
> 
> > and that's the only trace I get using bt full :
> > 
> > 229     #define IS_BSP()        (PCPU_GET(cpuid) == 0)
> > (kgdb) bt full
> > #0  doadump (textdump=<value optimized out>) at pcpu.h:229
> > No locals.
> > #1  0x0000000000000000 in ?? ()
> > No symbol table info available.
> > 
> > 
> > --
> > David Demelier
> > _______________________________________________
> > freebsd-stable@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-stable
> > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
> 
> _______________________________________________
> freebsd-stable@freebsd.org mailing list
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Today I have a little bit more :

#0  0xffffffff804f358b in isbufbusy (bp=0xfffffe0003810480) at 
/usr/src/sys/kern/kern_shutdown.c:280
280             if (((bp->b_flags & (B_INVAL | B_PERSISTENT)) == 0 &&
(kgdb) bt full
#0  0xffffffff804f358b in isbufbusy (bp=0xfffffe0003810480) at 
/usr/src/sys/kern/kern_shutdown.c:280
No locals.
#1  0x0000000000000004 in ?? ()
No symbol table info available.
#2  0xffffffff804f3aa6 in kern_reboot (howto=260) at 
/usr/src/sys/kern/kern_shutdown.c:451
        _ep = (struct eventhandler_entry *) 0x100
        _el = (struct eventhandler_list *) 0xffffffff804f35b3
        first_buf_printf = 1
#3  0xffffffff804f3f69 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:624
        td = (struct thread *) 0x1
        bootopt = 260
        newpanic = 1
        ap = {{gp_offset = 16, fp_offset = 48, overflow_arg_area = 
0xffffff80daaf0420, reg_save_area = 0xffffff80daaf0350}}
        panic_cpu = 0
        buf = "general protection fault", '\0' <repeats 231 times>
#4  0xffffffff806fcf69 in trap_fatal (frame=0x9, eva=Variable "eva" is not 
available.
) at /usr/src/sys/amd64/amd64/trap.c:851
        code = Variable "code" is not available.


-- 
David Demelier
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