This is a note to let you know that I've just added the patch titled
drm/amdkfd: drop process ref count when xnack disable
to the 5.14-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-drop-process-ref-count-when-xnack-disable.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d6043581e1d9d0507a8413a302db0e35c8506e0e Mon Sep 17 00:00:00 2001
From: Alex Sierra <alex.sierra@xxxxxxx>
Date: Tue, 31 Aug 2021 21:05:02 -0500
Subject: drm/amdkfd: drop process ref count when xnack disable
From: Alex Sierra <alex.sierra@xxxxxxx>
commit d6043581e1d9d0507a8413a302db0e35c8506e0e upstream.
During svm restore pages interrupt handler, kfd_process ref count was
never dropped when xnack was disabled. Therefore, the object was never
released.
Fixes: 2383f56bbe4a ("drm/amdkfd: page table restore through svm API")
Signed-off-by: Alex Sierra <alex.sierra@xxxxxxx>
Reviewed-by: Philip Yang <philip.yang@xxxxxxx>
Reviewed-by: Jonathan Kim <jonathan.kim@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -2426,7 +2426,8 @@ svm_range_restore_pages(struct amdgpu_de
}
if (!p->xnack_enabled) {
pr_debug("XNACK not enabled for pasid 0x%x\n", pasid);
- return -EFAULT;
+ r = -EFAULT;
+ goto out;
}
svms = &p->svms;
Patches currently in stable-queue which might be from alex.sierra@xxxxxxx are
queue-5.14/drm-amdkfd-drop-process-ref-count-when-xnack-disable.patch
