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GET /api/patches/2217429/?format=api
{ "id": 2217429, "url": "http://patchwork.ozlabs.org/api/patches/2217429/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260329030942.26639-1-pengpeng@iscas.ac.cn/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20260329030942.26639-1-pengpeng@iscas.ac.cn>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260329030942.26639-1-pengpeng@iscas.ac.cn/", "date": "2026-03-29T03:09:42", "name": "powerpc/pseries/lparcfg: bound shared processor attribute parsing", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c245c3dcd80988f21f1f2383c8019f8e03cc7b42", "submitter": { "id": 93000, "url": "http://patchwork.ozlabs.org/api/people/93000/?format=api", "name": "Pengpeng Hou", "email": "pengpeng@iscas.ac.cn" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260329030942.26639-1-pengpeng@iscas.ac.cn/mbox/", "series": [ { "id": 497896, "url": "http://patchwork.ozlabs.org/api/series/497896/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=497896", "date": "2026-03-29T03:09:42", "name": "powerpc/pseries/lparcfg: bound shared processor attribute parsing", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497896/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217429/comments/", "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/2217429/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-18968-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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lists.ozlabs.org;\n dmarc=none (p=none dis=none) header.from=iscas.ac.cn;\n spf=pass (client-ip=159.226.251.21; helo=cstnet.cn;\n envelope-from=pengpeng@iscas.ac.cn;\n receiver=lists.ozlabs.org) smtp.mailfrom=iscas.ac.cn", "X-Greylist": "delayed 386 seconds by postgrey-1.37 at boromir;\n Sun, 29 Mar 2026 14:16:20 AEDT", "From": "Pengpeng Hou <pengpeng@iscas.ac.cn>", "To": "maddy@linux.ibm.com,\n\tmpe@ellerman.id.au", "Cc": "npiggin@gmail.com,\n\tchleroy@kernel.org,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-kernel@vger.kernel.org,\n\tpengpeng@iscas.ac.cn", "Subject": "[PATCH] powerpc/pseries/lparcfg: bound shared processor attribute\n parsing", "Date": "Sun, 29 Mar 2026 11:09:42 +0800", "Message-ID": "<20260329030942.26639-1-pengpeng@iscas.ac.cn>", "X-Mailer": "git-send-email 2.50.1", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-CM-TRANSID": "qwCowAAHsGv2l8hpdOd8Cw--.37861S2", "X-Coremail-Antispam": "1UD129KBjvJXoW7XF15JFy8WF4xWryDuF15Arb_yoW8Jr17p3\n\tZ8KF47Kr4kGa4FkasrJF17XF4j93Z0vF4UWw40yasxAa43Xrn0vFsagr1Fvr4xJr1fGw4r\n\tZ3sIgwn5Wr9rZ3JanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2\n\t9KBjDU0xBIdaVrnRJUUUkC14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0\n\trVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02\n\t1l84ACjcxK6xIIjxv20xvE14v26r4j6ryUM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4j\n\t6F4UM28EF7xvwVC2z280aVAFwI0_Cr1j6rxdM28EF7xvwVC2z280aVCY1x0267AKxVWxJr\n\t0_GcWle2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E\n\t2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJV\n\tW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lc7CjxVAaw2AFwI0_\n\tJF0_Jw1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67\n\tAKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r126r1DMIIY\n\trxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14\n\tv26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8\n\tJwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfUYCJmUU\n\tUUU", "X-Originating-IP": "[111.196.245.197]", "X-CM-SenderInfo": "pshqw1xhqjqxpvfd2hldfou0/", "X-Spam-Status": "No, score=-2.3 required=3.0 tests=RCVD_IN_DNSWL_MED,\n\tSPF_HELO_PASS,SPF_PASS autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "parse_system_parameter_string() copies the shared processor attribute sysparm into a fixed local work buffer one byte at a time, but it never checks whether the next byte still fits. A long token without an early comma or NUL can therefore run past SPLPAR_MAXLENGTH.\n\nStop parsing once the local token buffer is full instead of writing past the fixed destination.\n\nSigned-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>\n---\n arch/powerpc/platforms/pseries/lparcfg.c | 4 ++++\n 1 file changed, 4 insertions(+)", "diff": "diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c\nindex 8821c378bfff..1bf2312f3e04 100644\n--- a/arch/powerpc/platforms/pseries/lparcfg.c\n+++ b/arch/powerpc/platforms/pseries/lparcfg.c\n@@ -418,6 +418,10 @@ static void parse_system_parameter_string(struct seq_file *m)\n \t\tw_idx = 0;\n \t\tidx = 0;\n \t\twhile ((*local_buffer) && (idx < splpar_strlen)) {\n+\t\t\tif (w_idx >= SPLPAR_MAXLENGTH - 1) {\n+\t\t\t\tpr_warn_once(\"lparcfg: shared processor attribute token is too long\\n\");\n+\t\t\t\tbreak;\n+\t\t\t}\n \t\t\tworkbuffer[w_idx++] = local_buffer[idx++];\n \t\t\tif ((local_buffer[idx] == ',')\n \t\t\t || (local_buffer[idx] == '\\0')) {\n", "prefixes": [] }