kdb stack trace misses some frames.

[Keith Owens]

On Mon, 25 Aug 2003 15:44:35 +0900, 
TeJun Huh <tejun at aratech.co.kr> wrote:
> While I was debugging 2.4.21 kernel with kdb v4.3, a cpu hit a
>deadlock but the stack trace had some problems.

Before debugging the debugger, check arch/i386/kdb/ChangeLog.  There
were some recent tweaks to the 386 backtrace, make sure you have at
least kdb v4.3-2.4.21-i386-3.

2003-07-01 Keith Owens  <kaos at sgi.com>

        * Convert kdba_find_return() to two passes to reduce false positives.
        * Correct jmp disp8 offset calculation for out of line lock code.
        * Use NMI for kdb IPI in clustered APIC mode.  Sachin Sant, IBM.
        * kdb v4.3-2.4.21-i386-3.