drm/vmwgfx: Limit display layout ioctl array size to VMWGFX_NUM_DISPLAY_UNITS
authorIan Forbes <ian.forbes@broadcom.com>
Thu, 8 Aug 2024 20:06:34 +0000 (15:06 -0500)
committerZack Rusin <zack.rusin@broadcom.com>
Thu, 10 Oct 2024 18:27:01 +0000 (14:27 -0400)
commit28a5dfd4f615539fb22fb6d5c219c199c14e6eb6
tree184209a0d0b3f971403c9804965e0f4d10b8f5d6
parentfcddc71ec7ecf15b4df3c41288c9cf0b8e886111
drm/vmwgfx: Limit display layout ioctl array size to VMWGFX_NUM_DISPLAY_UNITS

Currently the array size is only limited by the largest kmalloc size which
is incorrect. This change will also return a more specific error message
than ENOMEM to userspace.

Signed-off-by: Ian Forbes <ian.forbes@broadcom.com>
Reviewed-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Martin Krastev <martin.krastev@broadcom.com>
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240808200634.1074083-1-ian.forbes@broadcom.com
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
drivers/gpu/drm/vmwgfx/vmwgfx_kms.h