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GET /api/patches/2218550/?format=api
{ "id": 2218550, "url": "http://patchwork.ozlabs.org/api/patches/2218550/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260401120919.282668-2-ade@amicon.ru/", "project": { "id": 46, "url": "http://patchwork.ozlabs.org/api/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": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260401120919.282668-2-ade@amicon.ru>", "list_archive_url": null, "date": "2026-04-01T12:08:23", "name": "[net-next,v3,1/2] e1000: limit endianness conversion to boundary words", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "8b2dfcef9e18586687d369c9f5257ec971d03c0e", "submitter": { "id": 92902, "url": "http://patchwork.ozlabs.org/api/people/92902/?format=api", "name": "Agalakov Daniil", "email": "ade@amicon.ru" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260401120919.282668-2-ade@amicon.ru/mbox/", "series": [ { "id": 498327, "url": "http://patchwork.ozlabs.org/api/series/498327/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=498327", "date": "2026-04-01T12:08:22", "name": "e1000/e1000e: limit endianness conversion to boundary words", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/498327/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2218550/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2218550/checks/", "tags": {}, "related": [], "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=3dtshRLH;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::137; 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envelope-from=intel-wired-lan-bounces@osuosl.org;\n receiver=<UNKNOWN> ", "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 smtp4.osuosl.org E2881410F0", "OpenDKIM Filter v2.11.0 smtp1.osuosl.org 6A42F80388" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org;\n\ts=default; t=1775045389;\n\tbh=7kqU9KWB2xyKICoWVfvN1lhRdInz9hyw8uc0aMaA06o=;\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=3dtshRLHnUgZPqHmJIkXxH/9wFEzlPSEXOMBnhA7gI36y+CHHU9N8vBh0o2uMONSa\n\t Kdy6lkSVECG+bgJMm4buzLvOJkyjX79HIJcKYaiDJXGhobWpnRgN3cl4dkM3lBzw4h\n\t +xRvRZVxHfwgyGb7LOlpzxE4s4APsOHAT+HvCOWM4r6fVTouUALEV2uha9U1ojlqKR\n\t WR9T6nkEbN8Kpwzow7VQWXDdVM8EeIVXVswR/5UA259jzJpFjzsVx/L1QY4XfoB8p/\n\t QIoPUWKXanKd0+HuCqidtAjQlRUP+PNP+5z4V5xWil3VYXPg8wnwFt1BduVSDSclNm\n\t YS1so836LCmjg==", "Received-SPF": "Pass (mailfrom) identity=mailfrom; client-ip=77.108.111.100;\n helo=mail.amicon.ru; envelope-from=ade@amicon.ru; receiver=<UNKNOWN>", "DMARC-Filter": "OpenDMARC Filter v1.4.2 smtp1.osuosl.org 6A42F80388", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "From": "Agalakov Daniil <ade@amicon.ru>", "To": "Tony Nguyen <anthony.l.nguyen@intel.com>", "CC": "Agalakov Daniil <ade@amicon.ru>, Przemek Kitszel\n <przemyslaw.kitszel@intel.com>, Andrew Lunn <andrew+netdev@lunn.ch>, \"David\n S. Miller\" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, \"Jakub\n Kicinski\" <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,\n <intel-wired-lan@lists.osuosl.org>, <netdev@vger.kernel.org>,\n <linux-kernel@vger.kernel.org>, <lvc-project@linuxtesting.org>, \"Daniil\n Iskhakov\" <dish@amicon.ru>, Roman Razov <rrv@amicon.ru>", "Date": "Wed, 1 Apr 2026 15:08:23 +0300", "Message-ID": "<20260401120919.282668-2-ade@amicon.ru>", "X-Mailer": "git-send-email 2.51.0", "In-Reply-To": "<20260401120919.282668-1-ade@amicon.ru>", "References": "<20260325151615.1407182-1-ade@amicon.ru>\n <20260401120919.282668-1-ade@amicon.ru>", "MIME-Version": "1.0", "X-Originating-IP": "[172.16.2.46]", "X-ClientProxiedBy": "mail.amicon.lan (192.168.0.59) To mail.amicon.lan\n (192.168.0.59)", "X-Mailman-Original-DKIM-Signature": "v=1; a=rsa-sha256; d=amicon.ru; s=mail;\n c=simple/simple;\n t=1775045378; h=from:subject:to:date:message-id;\n bh=HE4n1sAvPUoflg+jZgW88p4JQucSMSdvmERWpA9XOM0=;\n b=F4Ar2ddmu/V0RE31MzZB4vvAvI6SUAbdOdr/ny05IXiXQSOEgR752n0SRkKrE/E9eL/gy2jhi7f\n Ju8OiYOYr1eAcf1QkzP+q+Ig+fNwCRUpjtknQMA4lJ/zuiHjDEQg/TxhgIs4fwibVWA6BH9aYyiod\n X690AtZeDrLy+9eGIzs7hK9JFmLR3FogT0WAIdWn/oVIcImHhihnay4UtE00LQpXO3EgSWZq68/CK\n itGRZP41wpu6A/SC9OhUB4msBV7hhOLcBkT5PPfkU3152nqEEM/0hW9IwxclVy86U8iatntVDLa2v\n qOPLc0TC+o2xy2ktXcaPVrFfHwG+m1uJWSvg==", "X-Mailman-Original-Authentication-Results": [ "smtp1.osuosl.org;\n dmarc=pass (p=quarantine dis=none)\n header.from=amicon.ru", "smtp1.osuosl.org;\n dkim=pass (2048-bit key) header.d=amicon.ru header.i=@amicon.ru\n header.a=rsa-sha256 header.s=mail header.b=F4Ar2ddm" ], "Subject": "[Intel-wired-lan] [PATCH net-next v3 1/2] e1000: limit endianness\n conversion to boundary words", "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": "[Why]\nIn e1000_set_eeprom(), the eeprom_buff is allocated to hold a range of\nwords. However, only the boundary words (the first and the last) are\npopulated from the EEPROM if the write request is not word-aligned.\nThe words in the middle of the buffer remain uninitialized because they\nare intended to be completely overwritten by the new data via memcpy().\n\nThe previous implementation had a loop that performed le16_to_cpus()\non the entire buffer. This resulted in endianness conversion being\nperformed on uninitialized memory for all interior words.\n\nFix this by converting the endianness only for the boundary words\nimmediately after they are successfully read from the EEPROM.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\nCo-developed-by: Iskhakov Daniil <dish@amicon.ru>\nSigned-off-by: Iskhakov Daniil <dish@amicon.ru>\nSigned-off-by: Agalakov Daniil <ade@amicon.ru>\n---\nv2:\n - Split from the original bugfix series and targeted at 'net-next'.\n - Removed the Fixes: tag; limiting the conversion scope is an\n improvement to avoid unnecessary processing of uninitialized memory.\n - Improved commit description for clarity.\n\n drivers/net/ethernet/intel/e1000/e1000_ethtool.c | 11 +++++++----\n 1 file changed, 7 insertions(+), 4 deletions(-)", "diff": "diff --git a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c\nindex ab232b3fbbd0..38b1f91823ef 100644\n--- a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c\n+++ b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c\n@@ -496,6 +496,10 @@ static int e1000_set_eeprom(struct net_device *netdev,\n \t\t */\n \t\tret_val = e1000_read_eeprom(hw, first_word, 1,\n \t\t\t\t\t &eeprom_buff[0]);\n+\n+\t\t/* Device's eeprom is always little-endian, word addressable */\n+\t\tle16_to_cpus(&eeprom_buff[0]);\n+\n \t\tptr++;\n \t}\n \tif (((eeprom->offset + eeprom->len) & 1) && (ret_val == 0)) {\n@@ -504,11 +508,10 @@ static int e1000_set_eeprom(struct net_device *netdev,\n \t\t */\n \t\tret_val = e1000_read_eeprom(hw, last_word, 1,\n \t\t\t\t\t &eeprom_buff[last_word - first_word]);\n-\t}\n \n-\t/* Device's eeprom is always little-endian, word addressable */\n-\tfor (i = 0; i < last_word - first_word + 1; i++)\n-\t\tle16_to_cpus(&eeprom_buff[i]);\n+\t\t/* Device's eeprom is always little-endian, word addressable */\n+\t\tle16_to_cpus(&eeprom_buff[last_word - first_word]);\n+\t}\n \n \tmemcpy(ptr, bytes, eeprom->len);\n \n", "prefixes": [ "net-next", "v3", "1/2" ] }