[syslinux] fsc branch: loop in pxe_idle_init() on qemu with pcnet card
H. Peter Anvin
hpa at zytor.com
Thu Sep 3 16:01:34 PDT 2009
On 09/03/2009 02:58 PM, Sebastian Herbszt wrote:
> syslinux-4.00-pre5-10-gdc10f7b locks up on qemu with pcnet card.
> The problem seems to be in pxe_idle_init(). Added debug output:
>
> dev_id: 10222000
> before while loop h: 10 l: 0
> h: 10 l: 0
> e: 14e4166a
> h modified
> h: 350482265 l:0
>
> h seems bogus as there are only 11 entries in pxe_need_idle_drain.
>
> if (e == dev_id) {
> found = true;
> break;
> } else if (e < dev_id) {
> l = e+1;
> } else {
> h = e-1;
> }
>
No joke. I changed "e" at one point from being an index to an ID, but I
forgot that it was also used for keeping track of the next values of l
and h. *DUH.*
-hpa
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