diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1247-drm-amdgpu-don-t-clamp-debugfs-register-access-to-th.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1247-drm-amdgpu-don-t-clamp-debugfs-register-access-to-th.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1247-drm-amdgpu-don-t-clamp-debugfs-register-access-to-th.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1247-drm-amdgpu-don-t-clamp-debugfs-register-access-to-th.patch new file mode 100644 index 00000000..74284424 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1247-drm-amdgpu-don-t-clamp-debugfs-register-access-to-th.patch @@ -0,0 +1,37 @@ +From 2d3494c61b735d186d70d764a8a92971f570a5f6 Mon Sep 17 00:00:00 2001 +From: Alex Deucher <alexander.deucher@amd.com> +Date: Mon, 11 Feb 2019 16:49:47 -0500 +Subject: [PATCH 1247/2940] drm/amdgpu: don't clamp debugfs register access to + the BAR size +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This prevents us from accessing extended registers in tools like +umr. The register access functions already check if the offset +is beyond the BAR size and use the indirect accessors with locking +so this is safe. + +Reviewed-by: Christian König <christian.koenig@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 3 --- + 1 file changed, 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +index dd9a4fb9ce39..4ae3ff9a1d4c 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +@@ -158,9 +158,6 @@ static int amdgpu_debugfs_process_reg_op(bool read, struct file *f, + while (size) { + uint32_t value; + +- if (*pos > adev->rmmio_size) +- goto end; +- + if (read) { + value = RREG32(*pos >> 2); + r = put_user(value, (uint32_t *)buf); +-- +2.17.1 + |