[igt-dev] [PATCH i-g-t v2] lib/igt_kms: Fix memory corruption

[Daniel Stone]

Hi Vignesh,

On 27/10/2023 15:40, Vignesh Raman wrote:
> In crosvm, the kernel reports 16 for count_crtcs, which exceeds
> IGT_MAX_PIPES set to 8. The function igt_display_require allocates
> memory for IGT_MAX_PIPES members of igt_pipe_t structures, but then
> writes into it based on the count_crtcs reported by the kernel,
> resulting in memory corruption.

To make this robust against future changes (32 CRTCs seems totally 
fanciful, but so did 16 a while ago), this needs to also be robust 
against count_crtcs exceeding IGT_NUM_PIPES, along the lines of your 
previous change.

Cheers, Daniel