diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4527-drm-amdgpu-powerplay-fix-dereference-before-null-che.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4527-drm-amdgpu-powerplay-fix-dereference-before-null-che.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4527-drm-amdgpu-powerplay-fix-dereference-before-null-che.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4527-drm-amdgpu-powerplay-fix-dereference-before-null-che.patch new file mode 100644 index 00000000..920f9549 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4527-drm-amdgpu-powerplay-fix-dereference-before-null-che.patch @@ -0,0 +1,43 @@ +From f70d7dab0998e1e9af945550a69c3535835c82eb Mon Sep 17 00:00:00 2001 +From: Colin Ian King <colin.king@canonical.com> +Date: Fri, 15 Nov 2019 09:47:54 +0000 +Subject: [PATCH 4527/4736] drm/amdgpu/powerplay: fix dereference before null + check of pointer hwmgr + +The assignment of adev dereferences pointer hwmgr before hwmgr is null +checked, hence there is a potential null pointer deference issue. Fix +this by assigning adev after the null check. + +Addresses-Coverity: ("Dereference before null check") +Reviewed-by: Evan Quan <evan.quan@amd.com> +Signed-off-by: Colin Ian King <colin.king@canonical.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c +index 72f2b09195dc..cf5043bbf748 100644 +--- a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c ++++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c +@@ -81,7 +81,7 @@ static void hwmgr_init_workload_prority(struct pp_hwmgr *hwmgr) + + int hwmgr_early_init(struct pp_hwmgr *hwmgr) + { +- struct amdgpu_device *adev = hwmgr->adev; ++ struct amdgpu_device *adev; + + if (!hwmgr) + return -EINVAL; +@@ -96,6 +96,8 @@ int hwmgr_early_init(struct pp_hwmgr *hwmgr) + hwmgr_init_workload_prority(hwmgr); + hwmgr->gfxoff_state_changed_by_workload = false; + ++ adev = hwmgr->adev; ++ + switch (hwmgr->chip_family) { + case AMDGPU_FAMILY_CI: + adev->pm.pp_feature &= ~PP_GFXOFF_MASK; +-- +2.17.1 + |