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SubjectRe: 2.6.15-rc1-mm2 0x414 Bad page states
On Tue, 22 Nov 2005, Michael Frank wrote:
>
> I am getting this also with i810 drm in Vanilla 2.6.15-rc2
> upon exiting apps such as supertux.

Aha, perhaps you're the one we've been waiting for. I've suspected
a DRM issue, but nobody has actually seen one until now, and I didn't
want to put in a patch without live justification.

Would you please try the patch below, and let us know if it fixes your
problem. If so, I'll send it off to Andrew and Linus: the rest of the
PageReserved fixes, including the sound driver Bad page state fixes,
have gone into Linus' git tree today: perhaps this is the missing piece.

If this does not work for you, then presumably you'd be another sound
driver sufferer? and I should send you that patch (or you pick it up
from yesterday's LKML). But right now I'd selfishly like you to test
just this DRM patch below.

Thanks,
Hugh

--- 2.6.15-rc2/drivers/char/drm/drm_memory.c 2005-11-20 19:43:39.000000000 +0000
+++ linux/drivers/char/drm/drm_memory.c 2005-11-21 10:10:45.000000000 +0000
@@ -95,7 +95,7 @@ unsigned long drm_alloc_pages(int order,
unsigned long addr;
unsigned int sz;

- address = __get_free_pages(GFP_KERNEL, order);
+ address = __get_free_pages(GFP_KERNEL|__GFP_COMP, order);
if (!address)
return 0;

--- 2.6.15-rc2/drivers/char/drm/drm_memory_debug.h 2005-11-20 19:43:39.000000000 +0000
+++ linux/drivers/char/drm/drm_memory_debug.h 2005-11-21 10:11:04.000000000 +0000
@@ -221,7 +221,7 @@ unsigned long DRM(alloc_pages) (int orde
}
spin_unlock(&DRM(mem_lock));

- address = __get_free_pages(GFP_KERNEL, order);
+ address = __get_free_pages(GFP_KERNEL|__GFP_COMP, order);
if (!address) {
spin_lock(&DRM(mem_lock));
++DRM(mem_stats)[area].fail_count;
-
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