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 85A873B5839; Mon, 23 Mar 2026 14:07:25 +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=1774274845; cv=none; b=lpyA8Nt7xrLhlDGrs+4LQMZxsgFeVA47wJk1va9gW3ebCSiprKjClpikj/R8yTiNA7hXX0CgPIxcmjuQvBkq4ZWkU/1yJqNtlCAag8eTKMCyPCdZLhaHX0yu4x3X+Dzrfkbyb794uiYhp9eHc7K36TNkbiIcHRXBx1TRuw6sndA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774274845; c=relaxed/simple; bh=PlYSahQaiC2MdDdhdU714+jJU9J/VYYhII/bHHmDyWI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VBECIXjUAP2GZiBML1+n3+w8Y4gMnkdg+xNYkG6Dqz/ocqVxJPJVLN2a+bK2e5iDd4jhuQ8aRIT6ZKAk1gH809lSkq0upMV7ATRWxPhW4fCRIAHeMaBDKJapnOZsR+I6tRyW3Y/Ih/KSQep+r/Sjj00IXMr88aljq4PFD9svy7I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ZTO3k6NH; 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="ZTO3k6NH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17D36C4CEF7; Mon, 23 Mar 2026 14:07:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774274845; bh=PlYSahQaiC2MdDdhdU714+jJU9J/VYYhII/bHHmDyWI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZTO3k6NHMDkWa/oCv7R3PBQ1Dmx081t4eoO1iz52yDNrd0cTy5PfcyeQ+Zhb+Z5hl T+xfTfJHo+NbFpdvAMTzBvuNGjr2+RMe9HkGlbDIke82fFCKYGnWOBkKIDm+W74alc D+Co9GdWdI2Ge37O1nKpNpE32vWKI501JqQh73mk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Benjamin Cheng , Alex Deucher Subject: [PATCH 6.18 085/212] drm/amdgpu/mmhub3.0.2: add bounds checking for cid Date: Mon, 23 Mar 2026 14:45:06 +0100 Message-ID: <20260323134506.461348761@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134503.770111826@linuxfoundation.org> References: <20260323134503.770111826@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alex Deucher commit e5e6d67b1ce9764e67aef2d0eef9911af53ad99a 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 1441f52c7f6ae6553664aa9e3e4562f6fc2fe8ea) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_2.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_2.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v3_0_2.c @@ -108,7 +108,8 @@ mmhub_v3_0_2_print_l2_protection_fault_s "MMVM_L2_PROTECTION_FAULT_STATUS:0x%08X\n", status); - mmhub_cid = mmhub_client_ids_v3_0_2[cid][rw]; + mmhub_cid = cid < ARRAY_SIZE(mmhub_client_ids_v3_0_2) ? + mmhub_client_ids_v3_0_2[cid][rw] : NULL; dev_err(adev->dev, "\t Faulty UTCL2 client ID: %s (0x%x)\n", mmhub_cid ? mmhub_cid : "unknown", cid); dev_err(adev->dev, "\t MORE_FAULTS: 0x%lx\n",