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GET /api/patches/2216620/?format=api
{ "id": 2216620, "url": "http://patchwork.ozlabs.org/api/patches/2216620/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/tencent_FED49CF5331CC0C7910618883332A08E2606@qq.com/", "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": "<tencent_FED49CF5331CC0C7910618883332A08E2606@qq.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/tencent_FED49CF5331CC0C7910618883332A08E2606@qq.com/", "date": "2026-03-27T00:12:25", "name": "[v2] soc: fsl: qe: panic on ioremap() failure in qe_reset()", "commit_ref": null, "pull_url": null, "state": "under-review", "archived": false, "hash": "a6fb9c2e6b82250a1760234a2fefa2c29d6f7636", "submitter": { "id": 92838, "url": "http://patchwork.ozlabs.org/api/people/92838/?format=api", "name": "Wang Jun", "email": "1742789905@qq.com" }, "delegate": { "id": 61610, "url": "http://patchwork.ozlabs.org/api/users/61610/?format=api", "username": "chleroy", "first_name": "Christophe", "last_name": "Leroy", "email": "christophe.leroy@c-s.fr" }, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/tencent_FED49CF5331CC0C7910618883332A08E2606@qq.com/mbox/", "series": [ { "id": 497668, "url": "http://patchwork.ozlabs.org/api/series/497668/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=497668", "date": "2026-03-27T00:12:25", "name": "[v2] soc: fsl: qe: panic on ioremap() failure in qe_reset()", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/497668/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216620/comments/", "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/2216620/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-18841-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\tdkim=pass (1024-bit key;\n unprotected) header.d=qq.com header.i=@qq.com header.a=rsa-sha256\n header.s=s201512 header.b=nzpBQwH3;\n\tdkim-atps=neutral", "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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a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512;\n\tt=1774570549; bh=jF3VGWtFl5+5o0uq4BkVs4561ebEJfqMmvq/lQMWgIo=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References;\n\tb=nzpBQwH32QyzbCa/dnRSECDHVYxrDsrj2m+iSKxISqwYTMl/UCWhoRGVOV8ermZmB\n\t DC8N41s6uI0xW0/cucjkPinOJmr5O/zE09oTrozy5I0EI6e8QhgCRHDPfgI9JQRWVH\n\t /DfOb/CCGMwuU9QpS+6NV3OEHBcLFU76FyW4Dq/0=", "X-QQ-mid": "xmsmtpt1774570347t0b1u0f4c", "Message-ID": "<tencent_FED49CF5331CC0C7910618883332A08E2606@qq.com>", "X-QQ-XMAILINFO": "NOcEdvLhLw8TC3ZRP/Ms0StBJXSMyXt0mU2UswUKCWUlYxFjktxm4PCFaA1xS/\n\t EyzMCbbnf0yAdffRpg0L3tinYG7P33cxMV7HET/P46r2gumZSJli6l+weTKjXu4Xz05bnuUZjiq0\n\t pmeNp96t6ySl+iel6n/kLFUQ4jB/oHXJUdtkfa/4GsK1oSi3mE9NcU0/7Sm8GouX218nqxeCKNAe\n\t LwiiNRm1iCtCBsLAz/96ynLKP6QvZ52ne2DDmdgcYgi9GkisNL5EWjuxwkA4c5TsawyE1bNa3DO7\n\t BF7XbJPNNVsa06JylxRz4kLskpVXqmPs09Vwxn6iaK3eANR3IN5vmGDXzw2dA/9nx4UVIfov0F9+\n\t 3FD3ZLQom/kbFJOxCJfcD4ehTLaPG8nbmWOf982IWvOn24PKa5+3owmU1y4w3Pp5eVulVOIKMu+6\n\t zVwphqDXppwIFAD9JKisnxWxKJ4+5Uq23hUJ2U3ZkSX05uxIxwqgEf87bC+SEHkaomIac4p9/3Lg\n\t Jdd6Z5lXAueJyRSQIdrsOYeGy8aTMf61MnSrNMD1y8QJKlKOblGFejXIGN8oaRqLMgvCqOFYr2F6\n\t bGmGgmB6z92I/MWqt+cdi5K0oJl00zBWs2XD1kucFkDnSUD6P2iwgpjMd2Wym5mMlLu1yXkHXK1t\n\t AjaDRV3xkdT+duBWUk6CYiEZTHnHqh4Rox1fC6OWWh7gxV5vGXGKfK+ygKFdaGL7bQHhpo8OsNrh\n\t ILo4L/k6l6CuNO/Un5shA//IrgSSL9zzT+RnjY+ZSWgfEnKoae1MaeBHmgzDi/x9BfGneqNimrwb\n\t OhMBwcNZZ0TX5XskB89pFRAXzg0hm643TXzLnfu02X7O/reQluAWrKdhpBh6A+Nadf0L9IbxRBSi\n\t WZDXm7B5wMHfT0pyXkm8jnvYn4f/aCcEkXwplDrHpumfbOjAd0WoOsHzgZqu6YwwTJpSIRSHlZ+y\n\t bn/YtDozYt7Ua0ncRNxltyxIGiWiRxbsBIdkxiv/qeGhyD8dTE6x+RpXiFCF1H85SAkSvMx6+pkh\n\t MbR+YM2tq39v/Tkg0aQM7b1OV2cDEx3JJo5eTeKpOo2liS2EZfZt4Db4lsRjzANEK2TNxpbQ==", "X-QQ-XMRINFO": "MPJ6Tf5t3I/ylTmHUqvI8+Wpn+Gzalws3A==", "From": "Wang Jun <1742789905@qq.com>", "To": "Qiang Zhao <qiang.zhao@nxp.com>,\n\tChristophe Leroy <chleroy@kernel.org>,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-arm-kernel@lists.infradead.org", "Cc": "linux-kernel@vger.kernel.org,\n\tgszhai@bjtu.edu.cn,\n\t25125332@bjtu.edu.cn,\n\t25125283@bjtu.edu.cn,\n\t23120469@bjtu.edu.cn,\n\tWang Jun <1742789905@qq.com>,\n\tstable@vger.kernel.org", "Subject": "[PATCH v2] soc: fsl: qe: panic on ioremap() failure in qe_reset()", "Date": "Fri, 27 Mar 2026 08:12:25 +0800", "X-OQ-MSGID": "<20260327001225.23192-1-1742789905@qq.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<780c1ba3-6639-478e-896f-e35ec059b58c@kernel.org>", "References": "<780c1ba3-6639-478e-896f-e35ec059b58c@kernel.org>", "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-Spam-Flag": "YES", "X-Spam-Status": "Yes, score=3.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,\n\tHELO_DYNAMIC_IPADDR,RCVD_IN_DNSWL_NONE,RDNS_DYNAMIC,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Report": "\n\t* -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no\n\t* trust\n\t* [203.205.221.210 listed in list.dnswl.org]\n\t* -0.0 SPF_PASS SPF: sender matches SPF record\n\t* 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record\n\t* -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n\t* envelope-from domain\n\t* 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily\n\t* valid\n\t* -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's\n\t* domain\n\t* -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature\n\t* 0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends in\n\t* digit\n\t* [1742789905(at)qq.com]\n\t* 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider\n\t* [1742789905(at)qq.com]\n\t* 0.4 RDNS_DYNAMIC Delivered to internal network by host with\n\t* dynamic-looking rDNS\n\t* 3.2 HELO_DYNAMIC_IPADDR Relay HELO'd using suspicious hostname (IP addr\n\t* 1)", "X-Spam-Level": "***", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "When ioremap() fails in qe_reset(), the global pointer qe_immr remains\nNULL, leading to a subsequent NULL pointer dereference when the pointer\nis accessed. Since this happens early in the boot process, a failure to\nmap a few bytes of I/O memory indicates a fatal error from which the\nsystem cannot recover.\n\nFollow the same pattern as qe_sdma_init() and panic immediately when\nioremap() fails. This avoids a silent NULL pointer dereference later\nand makes the error explicit.\n\nFixes: 986585385131 (\"[POWERPC] Add QUICC Engine (QE) infrastructure\")\nCc: stable@vger.kernel.org\nSigned-off-by: Wang Jun <1742789905@qq.com>\n---\n drivers/soc/fsl/qe/qe.c | 6 +++++-\n 1 file changed, 5 insertions(+), 1 deletion(-)", "diff": "diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c\nindex 70b6eddb867b..9f6223043ee3 100644\n--- a/drivers/soc/fsl/qe/qe.c\n+++ b/drivers/soc/fsl/qe/qe.c\n@@ -86,8 +86,12 @@ static phys_addr_t get_qe_base(void)\n \n void qe_reset(void)\n {\n-\tif (qe_immr == NULL)\n+\tif (qe_immr == NULL) {\n \t\tqe_immr = ioremap(get_qe_base(), QE_IMMAP_SIZE);\n+\t\tif (qe_immr == NULL) {\n+\t\t\tpanic(\"QE:ioremap failed!\");\n+\t\t}\n+\t}\n \n \tqe_snums_init();\n \n", "prefixes": [ "v2" ] }