On Thu, Feb 04, 2010 at 12:11:41PM +0900, Tejun Heo wrote:
> On 02/04/2010 10:28 AM, Andy Isaacson wrote:
> > On my Dell Latitude e4300 commit 859ddf0974 ("idr: fix a critical
> > misallocation bug") causes Xorg to segfault with the following
> > backtrace:
>
> Does the following patch make any difference?
>
> diff --git a/lib/idr.c b/lib/idr.c
> index ba7d37c..a96c604 100644
> --- a/lib/idr.c
> +++ b/lib/idr.c
> @@ -140,7 +140,8 @@ static int sub_alloc(struct idr *idp, int *starting_id,
> struct idr_layer **pa)
> id = *starting_id;
> restart:
> p = idp->top;
> - l = p->layer;
> + l = idp->layers;
> + pa[l--] = NULL;
> while (1) {
> /*
> * We run around this while until we reach the leaf node...
Alas, no -- with that patch applied Xorg still segfaults in the same
place.
-andy
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