Re: [User-mode-linux-user] [UNSTABLE] user-mode port 0.29-2.4.0-test6

[William S. <wst...@po...>]

Good evening, Jeff,

On Mon, 14 Aug 2000, Jeff Dike wrote:

> wst...@po... said:
> > Initializing random number generator... done.
> > Recovering nvi editor sessions... done.
> > INIT: Entering runlevel: 2
> > Initializing random number generator... done.
> > Recovering nvi editor sessions... done.
> > INIT: Entering runlevel: 2
> > Kernel panic: Kernel mode fault at addr 0x53409f94, ip 0x10034f7d 
> 
> What root_fs was that?  It's a bit strange for it to be entering runlevel 2 
> twice.

	I found the source of the error; it was gpm in the host kernel.
;-)  Maybe if I posted the text just _once_ it would make more sense.

> To see where the crash was, do 'i sym 0x10034f7d' at that gdb.
> 
> 'i line *0x10034f7d' will give you line number information if it's available.

(gdb) file /usr/src/uml-linux/linux-2.4.0-test6.uml/linux     
Reading symbols from /usr/src/uml-linux/linux-2.4.0-test6.uml/linux...done.
(gdb) i sym 0x10034f7d
proc_pid_lookup + 353 in section .text
(gdb) i line *0x10034f7d
Line 64 of
"/usr/src/uml-linux/linux-2.4.0-test6.uml/include/asm/arch/atomic.h"
   starts at address 0x10034f7d <proc_pid_lookup+353>
   and ends at 0x10034f7f <proc_pid_lookup+355>.

	Cool!  Thanks for the pointer.

static __inline__ void atomic_inc(volatile atomic_t *v)
{
        __asm__ __volatile__(
                LOCK "incl %0"
                :"=m" (__atomic_fool_gcc(v))
                :"m" (__atomic_fool_gcc(v)));
}

	Line 64 is the "__asm__ __volatile__ (" line.  Sorry, I tried to
get a backtrace, but was unsuccessful.  Not all that useful without a
backtrace, I suppose, but I couldn't convince gdb to give me a bt.  Oh
well.

> I'm not too worried about this one.  test6 is a piece of cr*p.  When I can 
> boot it up and run my stress testers on it again, I'll become concerned about 
> other people's problems :-)

	Touche'.  *smile*
	Cheers,
	- Bill

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	-- HAL
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William Stearns (wst...@po...).  Mason, Buildkernel, named2hosts, 
and ipfwadm2ipchains are at:                http://www.pobox.com/~wstearns
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