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drm/amdgpu: add a missing lock for AMDGPU_SCHED
[ Upstream commit2397e3d8d2
] mgr->ctx_handles should be protected by mgr->lock. v2: improve commit message v3: add a Fixes tag Signed-off-by: Chia-I Wu <olvaffe@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Fixes:52c6a62c64
("drm/amdgpu: add interface for editing a foreign process's priority v3") Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 5 additions and 1 deletions
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@ -58,6 +58,7 @@ static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
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{
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struct fd f = fdget(fd);
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struct amdgpu_fpriv *fpriv;
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struct amdgpu_ctx_mgr *mgr;
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struct amdgpu_ctx *ctx;
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uint32_t id;
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int r;
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@ -71,8 +72,11 @@ static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
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return r;
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}
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idr_for_each_entry(&fpriv->ctx_mgr.ctx_handles, ctx, id)
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mgr = &fpriv->ctx_mgr;
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mutex_lock(&mgr->lock);
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idr_for_each_entry(&mgr->ctx_handles, ctx, id)
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amdgpu_ctx_priority_override(ctx, priority);
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mutex_unlock(&mgr->lock);
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fdput(f);
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return 0;
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