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drm/xe: Fix possible exec queue leak in exec IOCTL

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In a couple of places after an exec queue is looked up the exec IOCTL
returns on input errors without dropping the exec queue ref. Fix this
ensuring the exec queue ref is dropped on input error.

Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: <stable@vger.kernel.org>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241105043524.4062774-2-matthew.brost@intel.com
This commit is contained in:
Matthew Brost 2024-11-04 20:35:23 -08:00
parent 71fb41bdd9
commit 07064a200b
1 changed files with 8 additions and 4 deletions
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12
drivers/gpu/drm/xe/xe_exec.c
View File

@ -132,12 +132,16 @@ int xe_exec_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
if (XE_IOCTL_DBG(xe, !q))
return -ENOENT;
if (XE_IOCTL_DBG(xe, q->flags & EXEC_QUEUE_FLAG_VM))
return -EINVAL;
if (XE_IOCTL_DBG(xe, q->flags & EXEC_QUEUE_FLAG_VM)) {
err = -EINVAL;
goto err_exec_queue;
}
if (XE_IOCTL_DBG(xe, args->num_batch_buffer &&
q->width != args->num_batch_buffer))
return -EINVAL;
q->width != args->num_batch_buffer)) {
err = -EINVAL;
goto err_exec_queue;
}
if (XE_IOCTL_DBG(xe, q->ops->reset_status(q))) {
err = -ECANCELED;