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GET /api/patches/2196070/?format=api
{ "id": 2196070, "url": "http://patchwork.ozlabs.org/api/patches/2196070/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260212204352.1044699-21-zycai@linux.ibm.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260212204352.1044699-21-zycai@linux.ibm.com>", "list_archive_url": null, "date": "2026-02-12T20:43:41", "name": "[v8,20/30] pc-bios/s390-ccw: Add signed component address overlap checks", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a4bb2bd6b6f81d18c0c21c18825be61974eae6e6", "submitter": { "id": 90643, "url": "http://patchwork.ozlabs.org/api/people/90643/?format=api", "name": "Zhuoying Cai", "email": "zycai@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260212204352.1044699-21-zycai@linux.ibm.com/mbox/", "series": [ { "id": 492021, "url": "http://patchwork.ozlabs.org/api/series/492021/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492021", "date": "2026-02-12T20:43:36", "name": "Secure IPL Support for SCSI Scheme of virtio-blk/virtio-scsi Devices", "version": 8, "mbox": "http://patchwork.ozlabs.org/series/492021/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196070/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196070/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=BaDScCPz;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n :content-transfer-encoding:date:from:in-reply-to:message-id\n :mime-version:references:subject:to; s=pp1; bh=YK26wOI8KJ8VL+HS6\n uBGdporIfQDPpN1DKk+mG4JcTo=; b=BaDScCPzdeo2vH/rJ21Z78zcsgMJzi9HT\n XnpLVE1r252cxwYJbYkGhKIHTNVqpY/+V6zlI+gj/OYfQXAdxDHWohIIsUE43a4t\n tE9e87WN6z28tH9AhfqjJvvK8yG/EBN2cT+woBSFHzC0+57cWXkAw92OCcfGXK2N\n ZRLo/cXuGie08rYL4mNl41w1/y0LXESxrIyWmKDi86UBtTaXdWLYCZPgqOCFDFuN\n x1L/zPGEp1aAmKBKiu6V89EQuIDXr/s9J0bPAekEZ38Ity8nACvwt6Us0P16iGKw\n bmviIEirbtOfZwbEQSoOglLptLRzNrT53RRLC2f2HQq1734r4Svgg==", "From": "Zhuoying Cai <zycai@linux.ibm.com>", "To": "thuth@redhat.com, berrange@redhat.com, richard.henderson@linaro.org,\n jrossi@linux.ibm.com, qemu-s390x@nongnu.org, qemu-devel@nongnu.org", "Cc": "david@kernel.org, walling@linux.ibm.com, jjherne@linux.ibm.com,\n pasic@linux.ibm.com, borntraeger@linux.ibm.com, farman@linux.ibm.com,\n mjrosato@linux.ibm.com, iii@linux.ibm.com, eblake@redhat.com,\n armbru@redhat.com, zycai@linux.ibm.com, alifm@linux.ibm.com,\n brueckner@linux.ibm.com", "Subject": "[PATCH v8 20/30] pc-bios/s390-ccw: Add signed component address\n overlap checks", "Date": "Thu, 12 Feb 2026 15:43:41 -0500", "Message-ID": "<20260212204352.1044699-21-zycai@linux.ibm.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<20260212204352.1044699-1-zycai@linux.ibm.com>", "References": "<20260212204352.1044699-1-zycai@linux.ibm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-TM-AS-GCONF": "00", "X-Authority-Analysis": "v=2.4 cv=YZiwJgRf c=1 sm=1 tr=0 ts=698e3bb4 cx=c_pps\n a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17\n a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22\n a=GgsMoib0sEa3-_RKJdDe:22 a=VnNF1IyMAAAA:8 a=qRwRlr6pIYMFea3-13gA:9", "X-Proofpoint-ORIG-GUID": "wrI3Ng8RA4eD50_s36-k8Yj_18d5Xg1J", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwMjEyMDE1NyBTYWx0ZWRfX5T4i7JMxxQBE\n lkJyoNlRJJOoKpl89g3Vkr5P5WiERrjJy9yD1ljUTzN02GipoFONJD4JBSkQy4TMcWBstZeQfMn\n uCnp8bYGLTwg9ESskyrTDr8eqSBOoI5rsuY89D5tjcOzco+naAC/mVr1S2z2iwrKGM06Fqmpyw/\n YVuwquwDT1y3cv/sWSaZ47rbyc2wkiURdaVsHPBmAkCeBJ8BG+SHYTFMRcw1/ZTuKapK7HLn0Vv\n TcDXH0+n/sSCoTRgj/rZaw+pgP75YLn5rN776mf/44S8miHE2YvILrUNBqcw5zkG0OmGXg2ihwO\n gqWNy7789JHSg1GMCg3a8yESimniqQkRU5fYvYdgCn1igusgsYFXrUvnwMNLMHUfRpzKRV3WKSv\n NEhLx9xALhsTAqTYjoxVJlxGT8QMUDq5DFr2jAlno59JbbA8uPEZFDCz9Q0ZyFS4G7mBFVTj206\n DnJyjQRyd8FRK9EcpaQ==", "X-Proofpoint-GUID": "wrI3Ng8RA4eD50_s36-k8Yj_18d5Xg1J", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-02-12_05,2026-02-12_03,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n priorityscore=1501 spamscore=0 impostorscore=0 suspectscore=0 malwarescore=0\n phishscore=0 bulkscore=0 adultscore=0 clxscore=1015 lowpriorityscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602120157", "Received-SPF": "pass client-ip=148.163.156.1; envelope-from=zycai@linux.ibm.com;\n helo=mx0a-001b2d01.pphosted.com", "X-Spam_score_int": "-19", "X-Spam_score": "-2.0", "X-Spam_bar": "--", "X-Spam_report": "(-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001,\n RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Add address range tracking and overlap checks to ensure that no\ncomponent overlaps with a signed component during secure IPL.\n\nSigned-off-by: Zhuoying Cai <zycai@linux.ibm.com>\n---\n pc-bios/s390-ccw/secure-ipl.c | 54 +++++++++++++++++++++++++++++++++++\n pc-bios/s390-ccw/secure-ipl.h | 6 ++++\n 2 files changed, 60 insertions(+)", "diff": "diff --git a/pc-bios/s390-ccw/secure-ipl.c b/pc-bios/s390-ccw/secure-ipl.c\nindex 1d5c2d40ce..27d2833642 100644\n--- a/pc-bios/s390-ccw/secure-ipl.c\n+++ b/pc-bios/s390-ccw/secure-ipl.c\n@@ -210,6 +210,55 @@ static void init_lists(IplDeviceComponentList *comp_list,\n cert_list->ipl_info_header.len = sizeof(cert_list->ipl_info_header);\n }\n \n+static bool is_comp_overlap(SecureIplCompAddrRange *comp_addr_range,\n+ int addr_range_index,\n+ uint64_t start_addr, uint64_t end_addr)\n+{\n+ /* neither a signed nor an unsigned component can overlap with a signed component */\n+ for (int i = 0; i < addr_range_index; i++) {\n+ if ((comp_addr_range[i].start_addr < end_addr &&\n+ start_addr < comp_addr_range[i].end_addr) &&\n+ comp_addr_range[i].is_signed) {\n+ return true;\n+ }\n+ }\n+\n+ return false;\n+}\n+\n+static void comp_addr_range_add(SecureIplCompAddrRange *comp_addr_range,\n+ int addr_range_index, bool is_signed,\n+ uint64_t start_addr, uint64_t end_addr)\n+{\n+ if (addr_range_index >= MAX_CERTIFICATES) {\n+ printf(\"Warning: Ignoring component address range index [%d]\"\n+ \" because the maximum supported index is %d\\n\",\n+ addr_range_index, MAX_CERTIFICATES - 1);\n+ return;\n+ }\n+\n+ comp_addr_range[addr_range_index].is_signed = is_signed;\n+ comp_addr_range[addr_range_index].start_addr = start_addr;\n+ comp_addr_range[addr_range_index].end_addr = end_addr;\n+}\n+\n+static void addr_overlap_check(SecureIplCompAddrRange *comp_addr_range,\n+ int *addr_range_index,\n+ uint64_t start_addr, uint64_t end_addr, bool is_signed)\n+{\n+ bool overlap;\n+\n+ overlap = is_comp_overlap(comp_addr_range, *addr_range_index,\n+ start_addr, end_addr);\n+ if (overlap) {\n+ zipl_secure_handle(\"Component addresses overlap\");\n+ }\n+\n+ comp_addr_range_add(comp_addr_range, *addr_range_index, is_signed,\n+ start_addr, end_addr);\n+ *addr_range_index += 1;\n+}\n+\n static int zipl_load_signature(ComponentEntry *entry, uint64_t sig_sec)\n {\n if (zipl_load_segment(entry, sig_sec) < 0) {\n@@ -253,6 +302,8 @@ int zipl_run_secure(ComponentEntry **entry_ptr, uint8_t *tmp_sec)\n * exists for the certificate).\n */\n int cert_list_table[MAX_CERTIFICATES] = { [0 ... MAX_CERTIFICATES - 1] = -1 };\n+ SecureIplCompAddrRange comp_addr_range[MAX_CERTIFICATES];\n+ int addr_range_index = 0;\n int signed_count = 0;\n \n if (!secure_ipl_supported()) {\n@@ -282,6 +333,9 @@ int zipl_run_secure(ComponentEntry **entry_ptr, uint8_t *tmp_sec)\n goto out;\n }\n \n+ addr_overlap_check(comp_addr_range, &addr_range_index,\n+ comp_addr, comp_addr + comp_len, sig_len > 0);\n+\n if (!sig_len) {\n break;\n }\ndiff --git a/pc-bios/s390-ccw/secure-ipl.h b/pc-bios/s390-ccw/secure-ipl.h\nindex eb5ba0ed47..69edfce241 100644\n--- a/pc-bios/s390-ccw/secure-ipl.h\n+++ b/pc-bios/s390-ccw/secure-ipl.h\n@@ -16,6 +16,12 @@\n VCStorageSizeBlock *zipl_secure_get_vcssb(void);\n int zipl_run_secure(ComponentEntry **entry_ptr, uint8_t *tmp_sec);\n \n+typedef struct SecureIplCompAddrRange {\n+ bool is_signed;\n+ uint64_t start_addr;\n+ uint64_t end_addr;\n+} SecureIplCompAddrRange;\n+\n static inline void zipl_secure_handle(const char *message)\n {\n switch (boot_mode) {\n", "prefixes": [ "v8", "20/30" ] }