Claude review: drm/v3d: Fix CPU job teardown bugs

[Claude Code Review Bot <claude-review@example.com>]

Overall Series Review

Subject: drm/v3d: Fix CPU job teardown bugs
Author: =?utf-8?q?Ma=C3=ADra_Canal?= <mcanal@igalia.com>
Patches: 3
Reviewed: 2026-05-16T08:58:36.842986

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This is a clean, well-motivated 2-patch series that fixes real teardown bugs in V3D's CPU job submission path. Both patches are correct, minimal, and well-structured.

**Patch 1** consolidates the CPU job teardown into the kref destructor (`v3d_cpu_job_free`), mirroring the existing `v3d_render_job_free` pattern. This eliminates a use-after-free on the ioctl error path where `cpu_job` was accessed after `v3d_job_cleanup()` had already released it, and also fixes a syncobj leak since the old manual `kvfree()` calls didn't call `drm_syncobj_put()` on each query entry.

**Patch 2** adds the missing `drm_gem_object_put()` for the indirect CSD BO reference acquired by `drm_gem_object_lookup()` in `v3d_get_cpu_indirect_csd_params()`.

The series is correctly ordered — patch 2 builds on the `v3d_cpu_job_free` kref destructor introduced in patch 1. The commit messages are clear and provide good analysis of the bugs.

**Verdict: Both patches look good for merging.** No issues found.

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