On Tue, Aug 31, 2021 at 8:56 PM Geert Uytterhoeven wrote:
>
> Hi Daniel,
>
> On Tue, Aug 31, 2021 at 8:53 PM Daniel Vetter wrote:
> > On Tue, Aug 31, 2021 at 7:19 PM Geert Uytterhoeven
> > wrote:
> > > On Tue, Aug 31, 2021 at 5:24 PM Tetsuo Handa
> > > wrote:
> > > > On 2021/08/31 15:48,
Hi Daniel,
On Tue, Aug 31, 2021 at 8:53 PM Daniel Vetter wrote:
> On Tue, Aug 31, 2021 at 7:19 PM Geert Uytterhoeven
> wrote:
> > On Tue, Aug 31, 2021 at 5:24 PM Tetsuo Handa
> > wrote:
> > > On 2021/08/31 15:48, Geert Uytterhoeven wrote:
> > > > Furthermore, this restricts the virtual frame
On Tue, Aug 31, 2021 at 7:19 PM Geert Uytterhoeven wrote:
>
> Hi Handa-san,
>
> On Tue, Aug 31, 2021 at 5:24 PM Tetsuo Handa
> wrote:
> > On 2021/08/31 15:48, Geert Uytterhoeven wrote:
> > > Furthermore, this restricts the virtual frame buffer size on 64-bit,
> > > too, while graphics cards can
Hi Handa-san,
On Tue, Aug 31, 2021 at 5:24 PM Tetsuo Handa
wrote:
> On 2021/08/31 15:48, Geert Uytterhoeven wrote:
> > Furthermore, this restricts the virtual frame buffer size on 64-bit,
> > too, while graphics cards can have much more than 4 GiB of RAM.
>
> Excuse me, but do you mean that some
On Tue, Aug 31, 2021 at 5:24 PM Tetsuo Handa
wrote:
> On 2021/08/31 15:48, Geert Uytterhoeven wrote:
> > Furthermore, this restricts the virtual frame buffer size on 64-bit,
> > too, while graphics cards can have much more than 4 GiB of RAM.
>
> Excuse me, but do you mean that some hardware
On 2021/08/31 15:48, Geert Uytterhoeven wrote:
> Furthermore, this restricts the virtual frame buffer size on 64-bit,
> too, while graphics cards can have much more than 4 GiB of RAM.
Excuse me, but do you mean that some hardware allows allocating more than
UINT_MAX bytes of memory for kernel
Hi Tetsuo,
Thanks for your patch!
On Mon, Aug 30, 2021 at 6:05 PM Tetsuo Handa
wrote:
> syzbot is reporting page fault at vga16fb_fillrect() [1], for
> vga16fb_check_var() is failing to detect multiplication overflow.
>
> if (vxres * vyres > maxmem) {
> vyres = maxmem / vxres;
> if
syzbot is reporting page fault at vga16fb_fillrect() [1], for
vga16fb_check_var() is failing to detect multiplication overflow.
if (vxres * vyres > maxmem) {
vyres = maxmem / vxres;
if (vyres < yres)
return -ENOMEM;
}
Since no module would accept too huge resolutions where
