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GET /api/1.1/patches/2220955/?format=api
{ "id": 2220955, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2220955/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260408131154.2661818-7-aleksandr.loktionov@intel.com/", "project": { "id": 46, "url": "http://patchwork.ozlabs.org/api/1.1/projects/46/?format=api", "name": "Intel Wired Ethernet development", "link_name": "intel-wired-lan", "list_id": "intel-wired-lan.osuosl.org", "list_email": "intel-wired-lan@osuosl.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260408131154.2661818-7-aleksandr.loktionov@intel.com>", "date": "2026-04-08T13:11:54", "name": "[iwl-net,v2,6/6] ixgbe: fix integer overflow and wrong bit position in ixgbe_validate_rtr()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "0043c5c0c2387ac6b67c07ae48adbf208e6a7bd5", "submitter": { "id": 75597, "url": "http://patchwork.ozlabs.org/api/1.1/people/75597/?format=api", "name": "Loktionov, Aleksandr", "email": "aleksandr.loktionov@intel.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260408131154.2661818-7-aleksandr.loktionov@intel.com/mbox/", "series": [ { "id": 499139, "url": "http://patchwork.ozlabs.org/api/1.1/series/499139/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=499139", "date": "2026-04-08T13:11:48", "name": "ixgbe: six bug fixes", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/499139/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2220955/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2220955/checks/", "tags": {}, "headers": { "Return-Path": "<intel-wired-lan-bounces@osuosl.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=RjSZiuF/;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::136; 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envelope-from=intel-wired-lan-bounces@osuosl.org;\n receiver=<UNKNOWN> ", "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 smtp3.osuosl.org 78435608A8", "OpenDKIM Filter v2.11.0 smtp3.osuosl.org 01A10608DC" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org;\n\ts=default; t=1775653928;\n\tbh=W+pWATUNZk4D+OO26ouISPU5lJBGjrPH0dGQjX2U0rQ=;\n\th=From:To:Cc:Date:In-Reply-To:References:Subject:List-Id:\n\t List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe:\n\t From;\n\tb=RjSZiuF/23lQ2LesfxReI/OF0D2tA1aXDrfcoXvRWRrfxKMwZcGRx2GvwmRRmxzR3\n\t TEBaJyXJB24XWIeyBw/QRPGtggDmLR1qWWrsA3s5iBqPvHSelGlgINBjdOT5XwX5VL\n\t 1TP7S2DOfdiNoZ3rJjL5mj7KuOdkVpNZlh1JHTXWck+NUvfsx98DZNcWBEoJngRR3O\n\t jsfPVkabQV9lN8AKLHbxLFPku4/v8ykkvvoc6InK7ATY+5GX8UiZTxCaZ9+VRHNr+H\n\t mLJ2aHAIK2MV/4Ir7FZNu++uwYhvMuuwyjVVgcLWfl18amLZDTWgj9PbdLSZbmjlH1\n\t vTLjxuKdSvg1Q==", "Received-SPF": "Pass (mailfrom) identity=mailfrom; client-ip=192.198.163.7;\n helo=mgamail.intel.com; envelope-from=aleksandr.loktionov@intel.com;\n receiver=<UNKNOWN>", "DMARC-Filter": "OpenDMARC Filter v1.4.2 smtp3.osuosl.org 01A10608DC", "X-CSE-ConnectionGUID": [ "8oh+R3nrSoqgRwbkvBMxZw==", "UoruqNZeSIK/gIMoqZhRJw==" ], "X-CSE-MsgGUID": [ "DlKJ42DdT7OzT3Jwr3zlNQ==", "Ajq+f5wrTI+FO0oDjwlMYQ==" ], "X-IronPort-AV": [ "E=McAfee;i=\"6800,10657,11752\"; a=\"102087241\"", "E=Sophos;i=\"6.23,167,1770624000\"; d=\"scan'208\";a=\"102087241\"", "E=Sophos;i=\"6.23,167,1770624000\"; d=\"scan'208\";a=\"228714985\"" ], "X-ExtLoop1": "1", "From": "Aleksandr Loktionov <aleksandr.loktionov@intel.com>", "To": "intel-wired-lan@lists.osuosl.org, anthony.l.nguyen@intel.com,\n aleksandr.loktionov@intel.com", "Cc": "netdev@vger.kernel.org", "Date": "Wed, 8 Apr 2026 15:11:54 +0200", "Message-ID": "<20260408131154.2661818-7-aleksandr.loktionov@intel.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<20260408131154.2661818-1-aleksandr.loktionov@intel.com>", "References": "<20260408131154.2661818-1-aleksandr.loktionov@intel.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Mailman-Original-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1775653926; x=1807189926;\n h=from:to:cc:subject:date:message-id:in-reply-to:\n references:mime-version:content-transfer-encoding;\n bh=LU06K51Gotx2bmJxCVz4VDn41OARIsR6jwdtt19pDGM=;\n b=NiK70kGWmOI8RFJImbFKvRsbV+BNGhzxMGF9td/k/2ZxokXh5KhYszom\n u4YnGjFoVgrhtPIz9Mf97DnKWeWfXEwvKP1gLeUOdFwgi3eq4EZhphfXO\n EVYbNFX1bbramneOiE9kDAcXF3Av6jykxuw2IkcV7yrcCCg5/BEKiPjwL\n FSYDJRVAEtwOKDzhjUucY9DgyLRj3BTCfA8/YzxHe45dGcbG30Kg+hnTQ\n iag9xiCHUv5aCz+Ap/BfNwXOzKASUpG/GEIh8od+2iweb61OzQnmzbfxN\n pRBmSUv54Readd7iv4SmCE3C2nnLrxbcWPmIxxz8yB+hKoSK96QHQSD8S\n A==;", "X-Mailman-Original-Authentication-Results": [ "smtp3.osuosl.org;\n dmarc=pass (p=none dis=none)\n header.from=intel.com", "smtp3.osuosl.org;\n dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com\n header.a=rsa-sha256 header.s=Intel header.b=NiK70kGW" ], "Subject": "[Intel-wired-lan] [PATCH iwl-net v2 6/6] ixgbe: fix integer\n overflow and wrong bit position in ixgbe_validate_rtr()", "X-BeenThere": "intel-wired-lan@osuosl.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n <intel-wired-lan.osuosl.org>", "List-Unsubscribe": "<https://lists.osuosl.org/mailman/options/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=unsubscribe>", "List-Archive": "<http://lists.osuosl.org/pipermail/intel-wired-lan/>", "List-Post": "<mailto:intel-wired-lan@osuosl.org>", "List-Help": "<mailto:intel-wired-lan-request@osuosl.org?subject=help>", "List-Subscribe": "<https://lists.osuosl.org/mailman/listinfo/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=subscribe>", "Errors-To": "intel-wired-lan-bounces@osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@osuosl.org>" }, "content": "Two bugs in the same loop in ixgbe_validate_rtr():\n\n1. The 3-bit traffic-class field was extracted by shifting a u32 and\n assigning the result directly to a u8. For user priority 0 this is\n harmless; for UP[5..7] the shift leaves bits [15..21] in the u32\n which are then silently truncated when stored in u8. Mask with\n IXGBE_RTRUP2TC_UP_MASK before the assignment so only the intended\n 3 bits are kept.\n\n2. When clearing an out-of-bounds entry the mask was always shifted by\n the fixed constant IXGBE_RTRUP2TC_UP_SHIFT (== 3), regardless of\n which loop iteration was being processed. This means only UP1 (bit\n position 3) was ever cleared; UP0,2..7 (positions 0, 6, 9, ..., 21)\n were left unreset, so invalid TC mappings persisted in hardware and\n could mis-steer received packets to the wrong traffic class.\n Use i * IXGBE_RTRUP2TC_UP_SHIFT to target the correct 3-bit field\n for each iteration.\n\nSwap the operand order in the mask expression to place the constant\non the right per kernel coding style (noted by David Laight).\n\nFixes: e7589eab9291 (\"ixgbe: consolidate, setup for multiple traffic classes\")\nCc: stable@vger.kernel.org\nSigned-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>\n---\nv1 -> v2:\n - Add Fixes: tag; reroute to iwl-net (wrong bit positions cause packet\n mis-steering); swap to (reg >> ...) & MASK operand order per David\n Laight.\n\n drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 5 +++--\n 1 file changed, 3 insertions(+), 2 deletions(-)", "diff": "diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\nindex 210c7b9..c9e4f12 100644\n--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\n+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c\n@@ -9772,11 +9772,12 @@ static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc)\n \trsave = reg;\n \n \tfor (i = 0; i < MAX_TRAFFIC_CLASS; i++) {\n-\t\tu8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT);\n+\t\tu8 up2tc = (reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT)) &\n+\t\t\t IXGBE_RTRUP2TC_UP_MASK;\n \n \t\t/* If up2tc is out of bounds default to zero */\n \t\tif (up2tc > tc)\n-\t\t\treg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT);\n+\t\t\treg &= ~(IXGBE_RTRUP2TC_UP_MASK << (i * IXGBE_RTRUP2TC_UP_SHIFT));\n \t}\n \n \tif (reg != rsave)\n", "prefixes": [ "iwl-net", "v2", "6/6" ] }