From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EDA3B13D539 for ; Wed, 7 Jan 2026 11:54:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767786858; cv=none; b=bg/oRJh3xAyRQFhy/WRwBYkUEgyH/c3GAe4AI6MyujNiAIogDrOa9oGFCM3I7nBn1bDU8YkKvoPrUv0kpK+xtH701N627lDkcVIvxY4cSZ2zR/PcKBlTJRtqX9v5UK13o+39GLr7wnlzQ/b2E9xuLsBCWb9lKWW4qEYxbt366m8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767786858; c=relaxed/simple; bh=1fZChTHC8g/43AKyeuP2EU5o3WHb/AJoalO3rv8PSIg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=QtRyCy4BAA01AAZGBfjJxGfnjdP8/dGGp8+f7a1EiabXHvM0aQhwh/kkWY45+8vVVfeNfrukCKZy8/D93Nt4Xh9gMw45F4VaivhdJo60YVSZqTmSDzlKVPnDleMD1AfYdu4Wnqf4sXZHZMUVo5WyoCqin25MrQEEBNZ1FAtqLLU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=G2/Us6rQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="G2/Us6rQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB068C4CEF7; Wed, 7 Jan 2026 11:54:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767786857; bh=1fZChTHC8g/43AKyeuP2EU5o3WHb/AJoalO3rv8PSIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G2/Us6rQgxjhTD5eK9FfecRWkr3aRmUEt7zpWVgZh23FiYd6CM6wWTBw7Xnx30g0V OhyM4ssS6crda65+dI8rRAEQkFDHylx31whsjjL3Ol4/f9nxliIwy9hPeomwlG476Z s/NMQESHsIMYDGFvR5M/OSdKxD0G+LhltrURCpa39F1FoKxunhBoWSMj73TuWRAwne fTtsKRwlB0ufuqDPuMy8/jsyti0slSUadVeuQDNmNuAWfBLvzoNE5kqSQD68JzVBWZ I61pW7f47e0aE6KpnVpoVkERsIhjzIIKOR0iOWoMjKfxYZBi5VkjlAUBHfAjmJYF7h 1Lwp048rN+/lA== From: Sasha Levin To: stable@vger.kernel.org Cc: Natalie Vock , =?UTF-8?q?Christian=20K=C3=B6nig?= , Alex Deucher , Sasha Levin Subject: [PATCH 6.6.y] drm/amdgpu: Forward VMID reservation errors Date: Wed, 7 Jan 2026 06:54:14 -0500 Message-ID: <20260107115414.3985195-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2026010550-duke-justly-8832@gregkh> References: <2026010550-duke-justly-8832@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Natalie Vock [ Upstream commit 8defb4f081a5feccc3ea8372d0c7af3522124e1f ] Otherwise userspace may be fooled into believing it has a reserved VMID when in reality it doesn't, ultimately leading to GPU hangs when SPM is used. Fixes: 80e709ee6ecc ("drm/amdgpu: add option params to enforce process isolation between graphics and compute") Cc: stable@vger.kernel.org Reviewed-by: Christian König Signed-off-by: Natalie Vock Signed-off-by: Alex Deucher [ adapted 3-argument amdgpu_vmid_alloc_reserved(adev, vm, vmhub) call to 2-argument version and added separate error check to preserve reserved_vmid tracking logic. ] Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 2992ce494e00..dc860544e6e2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2496,10 +2496,12 @@ int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) case AMDGPU_VM_OP_RESERVE_VMID: /* We only have requirement to reserve vmid from gfxhub */ if (!fpriv->vm.reserved_vmid[AMDGPU_GFXHUB(0)]) { - amdgpu_vmid_alloc_reserved(adev, AMDGPU_GFXHUB(0)); + int r = amdgpu_vmid_alloc_reserved(adev, AMDGPU_GFXHUB(0)); + + if (r) + return r; fpriv->vm.reserved_vmid[AMDGPU_GFXHUB(0)] = true; } - break; case AMDGPU_VM_OP_UNRESERVE_VMID: if (fpriv->vm.reserved_vmid[AMDGPU_GFXHUB(0)]) { -- 2.51.0