1) too big kernel on 1.92. 2) unrecognized: %lex-param.

1) too big kernel on 1.92. 2) unrecognized: %lex-param.

[Jeff Chua]

I got this message trying to boot linux using grub2 on a Dell Optiplex 
GX620 which has 4GB RAM. The same kernel booted fine on a IBM notebook 
using the same grub2 with 2GB RAM.

version is Grub2 1.92.

"Too big kernel"

Why?


I tried to use the latest CVS, but got the following errors when compiling 
...


include/grub/script.h:27:29: grub_script.tab.h: No such file or directory

bison -d -p grub_script_yy -b grub_script ./normal/parser.y
./normal/parser.y:54: unrecognized: %lex-param
./normal/parser.y:54:    Skipping to next %
./normal/parser.y:55: unrecognized: %parse-param
./normal/parser.y:55:    Skipping to next %



Thanks,
Jeff

Re: 1) too big kernel on 1.92. 2) unrecognized: %lex-param.

[Yoshinori K. Okuji]

On Wednesday 19 April 2006 13:16, Jeff Chua wrote:
> I got this message trying to boot linux using grub2 on a Dell Optiplex
> GX620 which has 4GB RAM. The same kernel booted fine on a IBM notebook
> using the same grub2 with 2GB RAM.
>
> version is Grub2 1.92.
>
> "Too big kernel"
>
> Why?

Can you debug it yourself a bit? I cannot afford buying so much memory. ;)

In loader/i386/pc/linux.c, there is a piece of code like this:

  if (grub_file_size (file) > (grub_ssize_t) grub_os_area_size)
    {
      grub_error (GRUB_ERR_OUT_OF_RANGE, "too big kernel");
      goto fail;
    }

Can you see what is printed when you change this to:

  if (grub_file_size (file) > (grub_ssize_t) grub_os_area_size)
    {
      grub_error (GRUB_ERR_OUT_OF_RANGE, "too big kernel (0x%x > 0x%x)",
                  grub_file_size (file), grub_os_area_size);
      goto fail;
    }

Cheers,
Okuji

Re: 1) too big kernel on 1.92. 2) unrecognized: %lex-param.

[Jeff Chua]

On Wed, 19 Apr 2006, Yoshinori K. Okuji wrote:
> Can you debug it yourself a bit? I cannot afford buying so much memory. ;)

It says ...

error: tog big kernel (0x187a58 > 0xa7825100)

I would like to help debug further, but don't really know how or where to 
start ...

Again, the same kernel works on system with less memory. Also, the same 
4GB machine can still boot up with "loadlin".

Thanks,
Jeff.

Re: 1) too big kernel on 1.92. 2) unrecognized: %lex-param.

[Jeff Chua]

> On Wed, 19 Apr 2006, Yoshinori K. Okuji wrote:
>> Can you debug it yourself a bit? I cannot afford buying so much memory. ;)
>
> error: tog big kernel (0x187a58 > 0xa7825100)

Wait a second, it's obviously wrong, huh?

Thanks for pointing this out. 0xa7825100 has a leading "1", so needs to 
cast as unsigned.


Thank you,
Jeff.


Here's a patch to fix the problem ...

--- ./loader/i386/pc/linux.c.org	2006-04-20 08:39:51 +0800
+++ ./loader/i386/pc/linux.c	2006-04-20 08:33:39 +0800
@@ -81,9 +81,10 @@
    if (! file)
      goto fail;

-  if (grub_file_size (file) > (grub_ssize_t) grub_os_area_size)
+  if ((unsigned) grub_file_size (file) > (unsigned) (grub_ssize_t) grub_os_area_size)
      {
-      grub_error (GRUB_ERR_OUT_OF_RANGE, "too big kernel");
+      grub_error (GRUB_ERR_OUT_OF_RANGE, "too big kernel (0x%x > 0x%x)",
+      	grub_file_size (file), (grub_ssize_t) grub_os_area_size);
        goto fail;
      }

Re: 1) too big kernel on 1.92. 2) unrecognized: %lex-param.

[Yoshinori K. Okuji]

On Thursday 20 April 2006 02:50, Jeff Chua wrote:
> > On Wed, 19 Apr 2006, Yoshinori K. Okuji wrote:
> >> Can you debug it yourself a bit? I cannot afford buying so much memory.
> >> ;)
> >
> > error: tog big kernel (0x187a58 > 0xa7825100)
>
> Wait a second, it's obviously wrong, huh?
>
> Thanks for pointing this out. 0xa7825100 has a leading "1", so needs to
> cast as unsigned.

Thanks for your test. Yes, you are right. I've fixed this in the CVS right 
now.

Okuji

Re: 1) too big kernel on 1.92. 2) unrecognized: %lex-param.

[Marco Gerards]

Jeff Chua <jeff84@silk.corp.fedex.com> writes:

> I tried to use the latest CVS, but got the following errors when
> compiling ...
>
>
> include/grub/script.h:27:29: grub_script.tab.h: No such file or directory
>
> bison -d -p grub_script_yy -b grub_script ./normal/parser.y
> ./normal/parser.y:54: unrecognized: %lex-param
> ./normal/parser.y:54:    Skipping to next %
> ./normal/parser.y:55: unrecognized: %parse-param
> ./normal/parser.y:55:    Skipping to next %

Which bison version do you use?

I have bison version 2.0.

--
Marco

Re: 1) too big kernel on 1.92. 2) unrecognized: %lex-param.

[Jeff Chua]

> Jeff Chua <jeff84@silk.corp.fedex.com> writes:
>
>> ./normal/parser.y:54: unrecognized: %lex-param
> I have bison version 2.0.

Bison was bison-1.35, so updated to bison-2.1 and problem went away.

Thank you.


Jeff.