From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> stable inclusion from stable-v6.6.42 commit f13c96e0e325a057c03f8a47734adb360e112efe category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAGEMD CVE: CVE-2024-41060 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 6fb15dcbcf4f212930350eaee174bb60ed40a536 ] The call to radeon_vm_clear_freed might clear bo_va->bo, so we have to check it before dereferencing it. Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Conflicts: drivers/gpu/drm/radeon/radeon_gem.c [Ma Wupeng: Context conflict] Signed-off-by: Ma Wupeng <mawupeng1@huawei.com> --- drivers/gpu/drm/radeon/radeon_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 75053917d213..51b6f38b5c47 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -582,7 +582,7 @@ static void radeon_gem_va_update_vm(struct radeon_device *rdev, if (r) goto error_unlock; - if (bo_va->it.start) + if (bo_va->it.start && bo_va->bo) r = radeon_vm_bo_update(rdev, bo_va, &bo_va->bo->tbo.mem); error_unlock: -- 2.17.1