Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 095/111] drm/amdkfd: Fix error codes in kfd_get_process | Date | Mon, 24 Sep 2018 13:53:02 +0200 |
| |
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wei Lu <wei.lu2@amd.com>
[ Upstream commit e47cb828eb3fca3e8999a0b9aa053dda18552071 ]
Return ERR_PTR(-EINVAL) if kfd_get_process fails to find the process. This fixes kernel oopses when a child process calls KFD ioctls with a file descriptor inherited from the parent process.
Signed-off-by: Wei Lu <wei.lu2@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -124,6 +124,8 @@ struct kfd_process *kfd_get_process(cons return ERR_PTR(-EINVAL); process = find_process(thread); + if (!process) + return ERR_PTR(-EINVAL); return process; }
| |