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 2ED4323AB9D; Mon, 23 Mar 2026 14:46:53 +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=1774277214; cv=none; b=kW3FiVyAAH8wTI0juK+Ct93uI3BQQxh/3AOn0eevkVySoHrLKhnwWI9L7wikIP5o+Vi8maLLDn7Rb8bDKOGgKJ8/5rAU2UkkxBhlMAWwnxvINySZFskhsoU0C1upn5rs1NV8Cjh65qSsbDhaw3NqMhKjAwvNdZkzw8uxbrr3TV0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774277214; c=relaxed/simple; bh=pYnlgfgrmqspE6eYJFps3cEJE2aN0zNFiNC4f8CpE6o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Twa8g5wwsMSTp8rXBZeLIK43/cXAPRGkwXNk5yoNJyMIju/mcrOkOM+mghAG4ttVM1RJ9QCqRcBECS+pQfX0SaSbEDr9CdXw5GvE4vwYa51ajp4q5GHYgog8qvMcpZcMCsbMCAzf3FuVtzUtxwZ0DvACpxOO0JwtsrC6nUxSfVA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SzBj2Z5u; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SzBj2Z5u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77B83C4CEF7; Mon, 23 Mar 2026 14:46:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774277213; bh=pYnlgfgrmqspE6eYJFps3cEJE2aN0zNFiNC4f8CpE6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SzBj2Z5uinqzetvJMBu0Swgkc//iO1sp8SC771+gwygw6FwWZVv0h3OsRAY9vQxbb izZIfMy80DOZii1g+2QjGmziHHqFk1hXjvyZwX5PSYqvvYMgq5qXfp74eR2Id5ZGrp PpW+Zusj6Sdq/IiUJj+W+PnRjdGyobooJRs+MFJM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Benjamin Cheng , Alex Deucher Subject: [PATCH 6.12 357/460] drm/amdgpu/mmhub4.1.0: add bounds checking for cid Date: Mon, 23 Mar 2026 14:45:53 +0100 Message-ID: <20260323134535.326775043@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134526.647552166@linuxfoundation.org> References: <20260323134526.647552166@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Deucher commit 3cdd405831d8cc50a5eae086403402697bb98a4a upstream. The value should never exceed the array size as those are the only values the hardware is expected to return, but add checks anyway. Reviewed-by: Benjamin Cheng Signed-off-by: Alex Deucher (cherry picked from commit 04f063d85090f5dd0c671010ce88ee49d9dcc8ed) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/mmhub_v4_1_0.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v4_1_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v4_1_0.c @@ -102,7 +102,8 @@ mmhub_v4_1_0_print_l2_protection_fault_s status); switch (amdgpu_ip_version(adev, MMHUB_HWIP, 0)) { case IP_VERSION(4, 1, 0): - mmhub_cid = mmhub_client_ids_v4_1_0[cid][rw]; + mmhub_cid = cid < ARRAY_SIZE(mmhub_client_ids_v4_1_0) ? + mmhub_client_ids_v4_1_0[cid][rw] : NULL; break; default: mmhub_cid = NULL;