From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793829325; b=EbNHk5uwZcTMN1rYNwpkXv5aVao9LFZ07iD1z6YrTmnJwK9EUElDMkwOGZEXUmqRD5Vh bk4Sh2sieDcYXmUTwSC6VHQf9ir9WKNDE4Mo/NHjv2rBaCKHTCYCzvwB4SGlJfqkbvZNz oB1QWwZ6V5IkSs/U5ScedfdG7s0Q8nC/GMUAr1lzBuuPDvneR3Fd29nWRLowwoM3N5Cnl DW93h8vsaVyC2obTmYS+u3PLwrxEMAGRZXJYwXc/AdUH3QxD1xAjjTQC5XrmC5RcYXtov S9eAUetBix1ZZEqPLNdqcw9k4UsbIkiaW8/QgUBhTwmU8oDpPnR7ApXr4unzDkL7pIQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793829325; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=7mxOAjkzrjE0likM7LGkSAeOSLnCsCODWdxAEAzUUHM=; b=kSZ08zveZIEzA/g+CB+9Uirc0+DQV0ob+H1jBEbAxLdnyCL95qjIDw1h/4W87/fRqBCn fdRnWcdQn1U9hhw1NCJ5P8Ol5k98DaL0Dh3APD1af1Ru6UMwSzVlVFLbevwWbKz9ec8SZ uS4DeyFsixynPR+5JU5E+TnEKwz3dbbppWkVm1icgafv9KWL8yZS5OJ+tp7jkU1WrJPip +AG/79Ti/eFVbLxDSWjdVJsiTHqc2kgoIxwYs3hKxcYHy/L4FDv/R4gLyYopYhnEfgbCu uzjRsRmFe2pqqDcKZZg9we2HOc62F8+Oya7M5LAr2J6worO0Mv3+43GKrqSj++B1Olg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=b+HXtGxC; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D4DE46070AAB; Wed, 4 Nov 2026 21:55:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=b+HXtGxC Received: by smtp.kernel.org (Postfix) with ESMTPSA id 716171F00A02; Wed, 4 Nov 2026 21:55:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793829324; bh=7mxOAjkzrjE0likM7LGkSAeOSLnCsCODWdxAEAzUUHM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=b+HXtGxCFPCQURiF80KrMSXNyxQmyqzSejdF98/9YGm72YTHjorkax47epK6d3vbs FO1cQH4QOst3+14hR4OqIA7cmtd0/abyfTvTlYE6XgluXJluQxyppGc0/4xvnrA1eQ lD7GOWaXYQM1VLMVnaXZx9HY/WO6tFEx6AKnm71k= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, YiPeng Chai , Tao Zhou , Alex Deucher , Sasha Levin Subject: [PATCH 6.18 0024/1005] drm/amdgpu: add bounds check to prevent array overflow Date: Wed, 4 Nov 2026 15:55:57 -0500 Message-ID: <20261104211044.234014761@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261104211043.516122098@linuxfoundation.org> References: <20261104211043.516122098@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: YiPeng Chai [ Upstream commit db15c49a17b8fab9ada38f3a548e5353d7d6b1a8 ] Add bounds check to prevent array overflow. v2: Add warning messages. Signed-off-by: YiPeng Chai Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index 16ae44e131ad4..b03d422572589 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -4814,6 +4814,13 @@ static void amdgpu_register_bad_pages_mca_notifier(struct amdgpu_device *adev) * Use this list instead of mgpu_info to find the amdgpu * device on which the UMC error was reported. */ + if (mce_adev_list.num_gpu >= MAX_GPU_INSTANCE) { + dev_warn_ratelimited(adev->dev, + "mce_adev_list full, skip notifier registration (max=%d)\n", + MAX_GPU_INSTANCE); + return; + } + mce_adev_list.devs[mce_adev_list.num_gpu++] = adev; /* -- 2.53.0