RE: [PATCH -R] Re: 2.4.10 is toxic to my system when I use my US

Nemosoft Unv. (
Thu, 27 Sep 2001 08:33:27 +0200 (MEST)


On 26-Sep-01 Jan Harkes wrote:
> On Wed, Sep 26, 2001 at 10:43:54AM -0400, Eloy A. Paris wrote:
>> I have been doing some tests to determine where the problems is. The

> It hit me as well and I found the culprit, the crash happens in
> usb-uhci.c:process_iso, where the following code used to be 'safe'
> for (i = 0; p != &urb_priv->desc_list; i++) {
> ...
> list_del (p);
> p = p->next;
> delete_desc (s, desc);
> }
> However, some infidel sneaked the following change into 2.4.10, late in
> the testcycle, which is deadly. This patch needs to be reverted. If the
> behaviour is wanted all uses of list_del in the kernel need to be looked
> at very closely.

Personally, I say the above piece of code is faulty. Refering to a
pointer after you appearently deleted it, is just very bad programming

IŽd say, fix the usb-uhci file, and do a quick run on all other instances
of list_del. I think most programmers got it right, or 2.4.10 kernels would
be coming down all over the planet.

- Nemosoft

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