[Intel-wired-lan] [PATCH iwl-next v2] i40e: fix MMIO write access to an invalid page in i40e_clear_hw

[Rinitha, SX]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces at osuosl.org> On Behalf Of Kyungwook Boo
> Sent: 11 March 2025 10:46
> To: Loktionov, Aleksandr <aleksandr.loktionov at intel.com>; Kitszel, Przemyslaw <przemyslaw.kitszel at intel.com>; Nguyen, Anthony L <anthony.l.nguyen at intel.com>
Cc: intel-wired-lan at lists.osuosl.org; netdev at vger.kernel.org
> Subject: [Intel-wired-lan] [PATCH iwl-next v2] i40e: fix MMIO write access to an invalid page in i40e_clear_hw
>
> When the device sends a specific input, an integer underflow can occur, leading to MMIO write access to an invalid page.
>
> Prevent the integer underflow by changing the type of related variables.
>
> Signed-off-by: Kyungwook Boo <bookyungwook at gmail.com>
> Link: https://lore.kernel.org/lkml/ffc91764-1142-4ba2-91b6-8c773f6f7095@gmail.com/T/
> ---
> Changes in v2:
> - Formatting properly
> - Fix variable shadowing
> - Link to v1: https://lore.kernel.org/netdev/55acc5dc-8d5a-45bc-a59c-9304071e4579@gmail.com/
> ---
> drivers/net/ethernet/intel/i40e/i40e_common.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>

Tested-by: Rinitha S <sx.rinitha at intel.com> (A Contingent worker at Intel)