Re: Re: kswapd OOPS under 2.4.19-pre8 (ext3, Reiserfs + (soft)raid0)

[William Lee Irwin III]

On Thu, May 16, 2002 at 07:28:44AM -0500, Todd R. Eigenschink wrote:
> Ooh, spiffy idea.  (Like I said, asm rookie.)  I just compiled gdb,
> and here's what it says.  Interesting, to me, at least.
> (gdb) list *__wake_up+0xb2
> 0x9d6 is in __wake_up
> (/src/linux-2.4.19-pre8/include/asm/processor.h:488).
> 483     #ifdef  CONFIG_MPENTIUMIII
> 484
> 485     #define ARCH_HAS_PREFETCH
> 486     extern inline void prefetch(const void *x)
> 487     {
> 488             __asm__ __volatile__ ("prefetchnta (%0)" : : "r"(x));
> 489     }
> 490
> 491     #elif CONFIG_X86_USE_3DNOW

list_for_each() uses prefetch() and is used in __wake_up_common(), which
is in turn used by __wake_up(). This is waitqueue list corruption.

Cheers,
Bill