From: Yonatan Maman <Ymaman@xxxxxxxxxx> Date: Mon, 7 Oct 2024 14:48:26 +0300 Subject: [PATCH v2 0/2] drm/nouveau/dmem: Fix Memory Leaking and Device Channels configuration This patch series addresses two critical issues in the Nouveau driver related to device channels, error handling, and memory leaks. - Memory Leak in migrate_to_ram: The migrate_to_ram function was identified as leaking memory when a copy push command fails. This results in the function returning a dirty HIGH_USER page, which can expose sensitive information and pose a security risk. To mitigate this vulnerability, the patch ensures that a zero page is allocated for the destination page, thereby preventing memory leaks and enhancing driver security in case of failure. - Privileged Error in Copy Engine Channel: An error was observed when the nouveau_dmem_copy_one function is executed, leading to a Host Copy Engine Privileged error on channel 1. The patch resolves this by adjusting the Copy Engine channel configuration to permit privileged push commands, resolving the error. Changes since V1: - Fixed version according to Danilo Krummrich's comments. Yonatan Maman (2): nouveau/dmem: Fix privileged error in copy engine channel nouveau/dmem: Fix memory leak in `migrate_to_ram` upon copy error drivers/gpu/drm/nouveau/nouveau_dmem.c | 2 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) -- 2.34.1
