diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/0026-drm-amd-display-Fix-memory-corruption-issue.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/0026-drm-amd-display-Fix-memory-corruption-issue.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/0026-drm-amd-display-Fix-memory-corruption-issue.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/0026-drm-amd-display-Fix-memory-corruption-issue.patch new file mode 100644 index 00000000..7f3ec016 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/0026-drm-amd-display-Fix-memory-corruption-issue.patch @@ -0,0 +1,39 @@ +From 48ae1c909b4c6e8a7d36f53d6f0900799dd108b0 Mon Sep 17 00:00:00 2001 +From: jimqu <Jim.Qu@amd.com> +Date: Mon, 28 Nov 2016 08:05:46 +0800 +Subject: [PATCH 0026/4131] drm/amd/display: Fix memory corruption issue. + +temp_flip_context is always same as current_context, +and the current_context will be freed in +dc_commit_targets(), but temp_flip_context will be used in +dc_update_surfaces_for_target(). + +Signed-off-by: JimQu <Jim.Qu@amd.com> +Reviewed-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com> +Acked-by: Harry Wentland <Harry.Wentland@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc.c | 6 +++++- + 1 file changed, 5 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c +index f7638f8..424a7d4 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc.c +@@ -1096,8 +1096,12 @@ bool dc_commit_targets( + + resource_validate_ctx_destruct(core_dc->current_context); + +- dm_free(core_dc->current_context); ++ if (core_dc->temp_flip_context != core_dc->current_context) { ++ dm_free(core_dc->temp_flip_context); ++ core_dc->temp_flip_context = core_dc->current_context; ++ } + core_dc->current_context = context; ++ memset(core_dc->temp_flip_context, 0, sizeof(*core_dc->temp_flip_context)); + + return (result == DC_OK); + +-- +2.7.4 + |