srikanth krishnakar <[email protected]> writes:

> On Tue, Apr 28, 2009 at 10:35 PM, Derek Atkins <[email protected]> wrote:
>
>     Jason,
>    
>     I pulled down some of the patches and applied them to my F9 2.6.27
>     kernel SRC RPM but then the kernel wont boot.  When I boot it I get:
>    
>     BUG: Int 14: CR2 ffaff000
>         EDI 0000092f  ESI ffc57000  EBP c077cfa4  ESP c077cf94
>         EBX ff3fe000  EDX 0000000e  ECX ffaff067  EAX 00000001
>         err 00000003  EIP c041c377   CS 00000060  flg 00010206
>     Stack: c077cfd0 c079501f c06ef19a 000004bf 00000188 ff3fe000 00020000
>     00020000
>           00000020 00099800 c076e000 c077cfe0 c07817d8 c07ae7ec 00000000
>     c077cff8
>           c0781080 008dc000 00000000 c06e475a 00010800 00d00007 00000000
>     c078124c
>    
>     Any clues what this means?
>
> It seems that KGDB is compiled with CONFIG_SMP=y in the kernel. Can you
> re-check this once by disabling CONFIG_SMP in the kernel.

I think that yes, it probably is compiled with CONFIG_SMP=y.  That never
used to be a problem before.  Is it a problem now?  Strangely I used
the same .config to manually build the 2.2.7 kgdb git snapshot I pulled
down and that kernel seems to run correctly.

> Hope this helps.

-derek

>     -derek
>    
>     Jason Wessel <[email protected]> writes:
>    
>     > The full kgdb is still available for the 2.6.27 kernel.
>     >
>     > See:
>     >
>     > http://git.kernel.org/?p=linux/kernel/git/jwessel/linux-2.6-kgdb.git;a=
>     shortlog;h=kgdb_2.6.27
>     >
>     > Jason.
>     >
>     >
>     > Derek Atkins wrote:
>     >> Hi,
>     >>
>     >> I've been happily debugging on Fedora 7 with Linux 2.6.23 and the
>     >> full kgdb patch.  It's been working great!  I connect to my VM Guest
>     >> via serial port.  Recently, however, I upgraded my debug target
>     >> to Fedora 9 with 2.6.27 and the integrated kgdb-lite and it feels
>     >> like nine of my fingers have been cut off due to missing functionality.
>     >> In particular I'm seriously missing:
>     >>
>     >> 1) console/log/printk messages no longer get sent over to gdb
>     >> 2) I can't Ctrl-C in gdb to stop the kernel
>     >>
>     >> So... is there a patch lying around that I can apply to the
>     >> 2.6.27 kernel that re-adds this functionality?  I'm happy to
>     >> rebuild my own kernel, but I really need a way to debug again.
>     >>
>     >> Note that I'm trying to debug a kernel module in the bootup sequence
>     >> so I do need boot messages and breakin capability.
>     >>
>     >> Thanks in advance for any help!
>     >>
>     >> -derek
>     >>
>     >>
>     >
>     >
>     >
>    
>     --
>           Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
>           Member, MIT Student Information Processing Board  (SIPB)
>           URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
>           [email protected]                        PGP key available
>    
>     
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> --
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>
> Regards
> Srikanth Krishnakar
> **********************
>

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       [email protected]                        PGP key available

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