Re: VM-related Oops: 2.4.15pre1

From: Christian Ehrhardt (ehrhardt@mathematik.uni-ulm.de)
Date: Sat Nov 17 2001 - 17:53:27 EST

On Fri, Nov 16, 2001 at 02:23:44PM -0800, Simon Kirby wrote:
> This box has Oopsed twice but is still running. Both Oopses followed a
> BUG() report (same in both cases):
>
> kernel BUG at page_alloc.c:76!
>
> Which maps to:
>
> if (page->mapping)
> BUG();
>
> ...in __free_pages_ok() in mm/page_alloc.c.

I think this one liner (diffed against 2.4.14) could fix this Oops:

--- mm/vmscan.c.vanilla Sat Nov 17 23:37:01 2001
+++ mm/vmscan.c Sat Nov 17 23:39:04 2001
@@ -414,10 +414,9 @@
                  * the page as well.
                  */
                 if (page->buffers) {
- spin_unlock(&pagemap_lru_lock);
-
                         /* avoid to free a locked page */
                         page_cache_get(page);
+ spin_unlock(&pagemap_lru_lock);
 
                         if (try_to_free_buffers(page, gfp_mask)) {
                                 if (!page->mapping) {

    regards Christian 

-- 
THAT'S ALL FOLKS!
-
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This archive was generated by hypermail 2b29 : Fri Nov 23 2001 - 21:00:16 EST