This is a note to let you know that I've just added the patch titled drm/amdkfd: fix improper return value on error to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-amdkfd-fix-improper-return-value-on-error.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Thu Oct 5 10:28:31 CEST 2017 From: Pan Bian <bianpan2016@xxxxxxx> Date: Thu, 1 Dec 2016 16:10:42 +0800 Subject: drm/amdkfd: fix improper return value on error From: Pan Bian <bianpan2016@xxxxxxx> [ Upstream commit 8bf793883da213864efc50c274d2b38ec0ca58b2 ] In function kfd_wait_on_events(), when the call to copy_from_user() fails, the value of return variable ret is 0. 0 indicates success, which is inconsistent with the execution status. This patch fixes the bug by assigning "-EFAULT" to ret when copy_from_user() returns an unexpected value. Signed-off-by: Pan Bian <bianpan2016@xxxxxxx> Signed-off-by: Oded Gabbay <oded.gabbay@xxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/amdkfd/kfd_events.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c @@ -739,8 +739,10 @@ int kfd_wait_on_events(struct kfd_proces struct kfd_event_data event_data; if (copy_from_user(&event_data, &events[i], - sizeof(struct kfd_event_data))) + sizeof(struct kfd_event_data))) { + ret = -EFAULT; goto fail; + } ret = init_event_waiter(p, &event_waiters[i], event_data.event_id, i); Patches currently in stable-queue which might be from bianpan2016@xxxxxxx are queue-4.9/team-fix-memory-leaks.patch queue-4.9/drm-amdkfd-fix-improper-return-value-on-error.patch