Re: 2.6.2-rc1-mm2 kernel oops

[Andrew Morton]

Andrew Morton <akpm@xxxxxxxx> wrote:
>
> Eric <eric@xxxxxxxx> wrote:
> >  Now I get the test_wp_bit oops w/ 
> ...
> 
> init/main.c does
> 
> 	mem_init();
> 	kmem_cache_init();
> 	sort_main_extable();
> 
> but mem_init() calls test_wp_bit().  The exception tables haven't been
> sorted yet.
> 

Well I don't see any reason why the obvious should not work.  It boots OK
on i386 but whether other architectures do things in mem_init() which must
be done prior to exception table sorting, I know not.  It seems unlikely.

Can you see if this patch makes the test_wp_bit() oops go away?

 
diff -puN init/main.c~test_wp_bit-oops-fix init/main.c
--- 25/init/main.c~test_wp_bit-oops-fix	2004-01-25 15:29:53.000000000 -0800
+++ 25-akpm/init/main.c	2004-01-25 15:30:03.000000000 -0800
@@ -434,9 +434,9 @@ asmlinkage void __init start_kernel(void
 	}
 #endif
 	page_address_init();
+	sort_main_extable();
 	mem_init();
 	kmem_cache_init();
-	sort_main_extable();
 	if (late_time_init)
 		late_time_init();
 	calibrate_delay();

_

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