This is a note to let you know that I've just added the patch titled
drm/radeon: fix error handling in radeon_driver_open_kms
to the 5.4-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-radeon-fix-error-handling-in-radeon_driver_open_kms.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4722f463896cc0ef1a6f1c3cb2e171e949831249 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@xxxxxxx>
Date: Mon, 17 Jan 2022 10:31:26 +0100
Subject: drm/radeon: fix error handling in radeon_driver_open_kms
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Christian König <christian.koenig@xxxxxxx>
commit 4722f463896cc0ef1a6f1c3cb2e171e949831249 upstream.
The return value was never initialized so the cleanup code executed when
it isn't even necessary.
Just add proper error handling.
Fixes: ab50cb9df889 ("drm/radeon/radeon_kms: Fix a NULL pointer dereference in radeon_driver_open_kms()")
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Tested-by: Jan Stancek <jstancek@xxxxxxxxxx>
Tested-by: Borislav Petkov <bp@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon_kms.c | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -652,18 +652,18 @@ int radeon_driver_open_kms(struct drm_de
fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
if (unlikely(!fpriv)) {
r = -ENOMEM;
- goto out_suspend;
+ goto err_suspend;
}
if (rdev->accel_working) {
vm = &fpriv->vm;
r = radeon_vm_init(rdev, vm);
if (r)
- goto out_fpriv;
+ goto err_fpriv;
r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
if (r)
- goto out_vm_fini;
+ goto err_vm_fini;
/* map the ib pool buffer read only into
* virtual address space */
@@ -671,7 +671,7 @@ int radeon_driver_open_kms(struct drm_de
rdev->ring_tmp_bo.bo);
if (!vm->ib_bo_va) {
r = -ENOMEM;
- goto out_vm_fini;
+ goto err_vm_fini;
}
r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
@@ -679,19 +679,21 @@ int radeon_driver_open_kms(struct drm_de
RADEON_VM_PAGE_READABLE |
RADEON_VM_PAGE_SNOOPED);
if (r)
- goto out_vm_fini;
+ goto err_vm_fini;
}
file_priv->driver_priv = fpriv;
}
- if (!r)
- goto out_suspend;
+ pm_runtime_mark_last_busy(dev->dev);
+ pm_runtime_put_autosuspend(dev->dev);
+ return 0;
-out_vm_fini:
+err_vm_fini:
radeon_vm_fini(rdev, vm);
-out_fpriv:
+err_fpriv:
kfree(fpriv);
-out_suspend:
+
+err_suspend:
pm_runtime_mark_last_busy(dev->dev);
pm_runtime_put_autosuspend(dev->dev);
return r;
Patches currently in stable-queue which might be from christian.koenig@xxxxxxx are
queue-5.4/drm-radeon-fix-error-handling-in-radeon_driver_open_kms.patch
queue-5.4/dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch
queue-5.4/drm-radeon-radeon_kms-fix-a-null-pointer-dereference.patch
