From: Melissa Wen <mwen@igalia.com>
Date: Thu, 16 Sep 2021 21:27:26 +0000 (+0100)
Subject: drm/v3d: fix sched job resources cleanup when a job is aborted
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=9fcb4a8ff2aad6158f3056c857c2b2252eae312d;p=uclinux-h8%2Flinux.git

drm/v3d: fix sched job resources cleanup when a job is aborted

In a cl submission, when bin job initialization fails, sched job resources
were already allocated for the render job. At this point,
drm_sched_job_init(render) was done in v3d_job_init but the render job is
aborted before drm_sched_job_arm (in v3d_job_push) happens; therefore, not
only v3d_job_put but also drm_sched_job_cleanup should be called (by
v3d_job_cleanup). A similar issue is addressed for csd and tfu submissions.

The issue was noticed from a review by Iago Toral in a patch that touches
the same part of the code.

Fixes: 916044fac8623 ("drm/v3d: Move drm_sched_job_init to v3d_job_init")
Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916212726.2u2psq2egwy2mdva@mail.igalia.com
---

diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index 1953706bdaeb..ead0be8d48a7 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -567,14 +567,14 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 	if (args->bcl_start != args->bcl_end) {
 		bin = kcalloc(1, sizeof(*bin), GFP_KERNEL);
 		if (!bin) {
-			v3d_job_put(&render->base);
+			v3d_job_cleanup(&render->base);
 			return -ENOMEM;
 		}
 
 		ret = v3d_job_init(v3d, file_priv, &bin->base,
 				   v3d_job_free, args->in_sync_bcl, V3D_BIN);
 		if (ret) {
-			v3d_job_put(&render->base);
+			v3d_job_cleanup(&render->base);
 			kfree(bin);
 			return ret;
 		}
@@ -716,7 +716,7 @@ v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
 	job->base.bo = kcalloc(ARRAY_SIZE(args->bo_handles),
 			       sizeof(*job->base.bo), GFP_KERNEL);
 	if (!job->base.bo) {
-		v3d_job_put(&job->base);
+		v3d_job_cleanup(&job->base);
 		return -ENOMEM;
 	}
 
@@ -810,14 +810,13 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
 
 	clean_job = kcalloc(1, sizeof(*clean_job), GFP_KERNEL);
 	if (!clean_job) {
-		v3d_job_put(&job->base);
-		kfree(job);
+		v3d_job_cleanup(&job->base);
 		return -ENOMEM;
 	}
 
 	ret = v3d_job_init(v3d, file_priv, clean_job, v3d_job_free, 0, V3D_CACHE_CLEAN);
 	if (ret) {
-		v3d_job_put(&job->base);
+		v3d_job_cleanup(&job->base);
 		kfree(clean_job);
 		return ret;
 	}