From patchwork Sun May 12 12:25:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miri Korenblit X-Patchwork-Id: 13662720 X-Patchwork-Delegate: johannes@sipsolutions.net Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (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 4A4A946522 for ; Sun, 12 May 2024 12:25:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715516737; cv=none; b=NVpTlTVFnNcwcns62lEC+G0oi64vb/BXoI2MCwMaCReVSTtOMdoZ3dTuLYgWhzVvS1LdI+9aiSmTijkuPuqvlSmFDGBYl05xwc7fh1kqkOM00j6KU84M5VEoynfrcF5SpD4LvpmrQtx9Pr65B5nIZsBuQhFmSxXAEh21x0qlHVo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715516737; c=relaxed/simple; bh=vhMRuS6eNwKXkPE9Mui0EmIpIF4PlFmpdG1Io7aiLRM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=BHNdRlid/OWSMxCIOrL20+gsJcQuTsN+23SwhxKthoh6OmHekWvPa46vH+zRZQXFETAwhDdCuhoU0CBAY4RHzaqQIRb2fbzx0Rkl7C8vFcRxvlpH2+KaGNVaDqPUdQ8g8032th488CxsuSagzgMCiyknYlyJC4k+vcIW+oR4aNU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=TQ0F5+yD; arc=none smtp.client-ip=198.175.65.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="TQ0F5+yD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1715516736; x=1747052736; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vhMRuS6eNwKXkPE9Mui0EmIpIF4PlFmpdG1Io7aiLRM=; b=TQ0F5+yDH2QH6EhqUtiuQ/Lnvy/eciqzivuKAJHRlix6N7N54Uejkb9g U9SlX7m27dEliuK5rudOLPptE3jGY6lwEo8ZwExCUIhh3wm+nfNEYQ6Ge vmvkKln1NxxaNOOnpLgFBVex/aeq1A+V21WNIB+2f/1tTlgVbYwsp7fs9 XH90S+vtwJynjZ4vGFeh+UhqyzpXUDFEqBXOan8aGGC5KHZdk7ouIkaWc 4V9UpoTvGgcbQvliMjtW/8LUu6Mn1gbWmCZ9PSFcM5Ffk5N7xuGtXaVNh Gyml8rLhJs3elSFjRD+kOw6aYIs4uqHnYfBQwFVyEslCpg6QFDwsh8tH0 w==; X-CSE-ConnectionGUID: k5I2C0XJSR2yCyY/BPpPCA== X-CSE-MsgGUID: AEgctstdQceDVBjYdqYdsA== X-IronPort-AV: E=McAfee;i="6600,9927,11071"; a="11397226" X-IronPort-AV: E=Sophos;i="6.08,155,1712646000"; d="scan'208";a="11397226" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2024 05:25:36 -0700 X-CSE-ConnectionGUID: EzxU7sg5Qnu3LM1EF3yEgw== X-CSE-MsgGUID: OYs05ujEQzm3cQZQpmpd5g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,155,1712646000"; d="scan'208";a="34761368" Received: from weis0040.iil.intel.com ([10.12.217.108]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2024 05:25:35 -0700 From: Miri Korenblit To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Emmanuel Grumbach , Johannes Berg Subject: [PATCH 14/14] wifi: iwlwifi: mvm: don't read past the mfuart notifcation Date: Sun, 12 May 2024 15:25:07 +0300 Message-Id: <20240512152312.66d9d0b23348.Ia91dd20f5e1ca1ad380b95e68aebf2794f553d9b@changeid> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240512122507.3812527-1-miriam.rachel.korenblit@intel.com> References: <20240512122507.3812527-1-miriam.rachel.korenblit@intel.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Israel (74) Limited From: Emmanuel Grumbach In case the firmware sends a notification that claims it has more data than it has, we will read past that was allocated for the notification. Remove the print of the buffer, we won't see it by default. If needed, we can see the content with tracing. This was reported by KFENCE. Fixes: bdccdb854f2f ("iwlwifi: mvm: support MFUART dump in case of MFUART assert") Signed-off-by: Emmanuel Grumbach Reviewed-by: Johannes Berg Signed-off-by: Miri Korenblit --- drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index 87cc1471dfdd..b8a785032513 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -94,20 +94,10 @@ void iwl_mvm_mfu_assert_dump_notif(struct iwl_mvm *mvm, { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_mfu_assert_dump_notif *mfu_dump_notif = (void *)pkt->data; - __le32 *dump_data = mfu_dump_notif->data; - int n_words = le32_to_cpu(mfu_dump_notif->data_size) / sizeof(__le32); - int i; if (mfu_dump_notif->index_num == 0) IWL_INFO(mvm, "MFUART assert id 0x%x occurred\n", le32_to_cpu(mfu_dump_notif->assert_id)); - - for (i = 0; i < n_words; i++) - IWL_DEBUG_INFO(mvm, - "MFUART assert dump, dword %u: 0x%08x\n", - le16_to_cpu(mfu_dump_notif->index_num) * - n_words + i, - le32_to_cpu(dump_data[i])); } static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,