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Re: 2.4.20 kernel panics on boot w/ AS2100



I'm pretty sure this is due to gcc2.95 - I had the same troubles with my
AS1200 which I solved by using gcc3.0

Mike

On Thu, Feb 27, 2003 at 07:07:27PM -0700, Soren Harward wrote:
> I have an Alphaserver 2100 (aka "Sable") revision 4/200.  I installed
> Debian 3.0r1 on it a few days ago and updated everything to "testing".
> It's a dual-processor machine, so yesterday I built a new 2.4.20 kernel
> with SMP turned on.  However, immediately on boot, the kernel panics
> with the following (I copied it on paper from the screen -- sorry if I
> got something wrong):
> 
> Unable to handle paging request at virtual address 0000000000000000
> [lots of 64-bit hex dumps]
> Trace: fffffc000081001c
> Code: b57e0018 20b13ff0 b75e0000 47f0040b b55e0010 209105d0 <a6e20000>
> 40810404
> Kernel panic: Attempted to kill the idle task!
> 
> Since it happenned so early in the boot, I thought it might have been a
> problem with being compiled for the wrong processor type (I've seen
> similar errors trying to boot an i686 kernel on an i586 machine).  So I
> went back to the kernel config and made sure that CONFIG_ALPHA_SABLE was
> set, but that CONFIG_ALPHA_EV5 was *not* set and that CONFIG_ALPHA_EV4
> was.  See, my AS2100 uses the EV4 processor and most AS2100's use the EV5
> processor.  So I recompiled, and still got a kernel panic.  But during this
> next compile, I noticed that the Makefile was still using the -Wa,-mev6
> switch, which passes "-mev6" (optimize for EV6) to the assembler.  So I
> commented that out of the Makefile, and re-re-compiled.  Still got a
> kernel panic.  I'm in the middle of re-re-re-compiling using
> CONFIG_ALPHA_GENERIC; I'll see if that works.
> 
> Anyone have any idea what's going on?  Is it indeed that my kernel is
> getting compiled for the wrong processor, or am I completely on the
> wrong track?  What else should I try?  Different kernel version?
> Different compiler?  Different kernel options?
> 
> Again, this is kernel 2.4.20, compiling with gcc 2.95.4, running on
> Debian 3.0r1/testing.
> 
> -- 
> Soren Harward
> soren@byu.edu
> 
> 
> -- 
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-- 
 They that can give up essential liberty to obtain a little temporary safety 
 deserve neither liberty nor safety.

 - Benjamin Franklin (1706-1790), Letter to Josiah Quincy, Sept. 11, 1773.

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