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GET /api/patches/2195346/?format=api
{ "id": 2195346, "url": "http://patchwork.ozlabs.org/api/patches/2195346/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260210201344.1403613-2-pierrick.bouvier@linaro.org/", "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": "<20260210201344.1403613-2-pierrick.bouvier@linaro.org>", "list_archive_url": null, "date": "2026-02-10T20:13:41", "name": "[1/4] contrib/plugins/uftrace: fix infinite stack unwind detection", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f2e2dfe65623675936c7ce610050eb2f4e64c850", "submitter": { "id": 85798, "url": "http://patchwork.ozlabs.org/api/people/85798/?format=api", "name": "Pierrick Bouvier", "email": "pierrick.bouvier@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260210201344.1403613-2-pierrick.bouvier@linaro.org/mbox/", "series": [ { "id": 491734, "url": "http://patchwork.ozlabs.org/api/series/491734/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=491734", "date": "2026-02-10T20:13:44", "name": "contrib/plugins/uftrace: add riscv64 support", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/491734/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2195346/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2195346/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=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=tkNjyPCH;\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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helo=mail-pf1-x42d.google.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n 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": "So far, we were detecting infinite stacks but not stopping unwinding\nsince break only exited inner loop.\n\nSigned-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>\n---\n contrib/plugins/uftrace.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)", "diff": "diff --git a/contrib/plugins/uftrace.c b/contrib/plugins/uftrace.c\nindex a7e21b5b87a..1ed982999ed 100644\n--- a/contrib/plugins/uftrace.c\n+++ b/contrib/plugins/uftrace.c\n@@ -443,7 +443,7 @@ static void cpu_unwind_stack(Cpu *cpu, uint64_t frame_pointer, uint64_t pc)\n /* check we don't have an infinite stack */\n for (size_t i = 0; i < depth; ++i) {\n if (frame_pointer == unwind[i].frame_pointer) {\n- break;\n+ goto after_unwind;\n }\n }\n CallstackEntry e = {.frame_pointer = frame_pointer, .pc = pc};\n@@ -456,6 +456,7 @@ static void cpu_unwind_stack(Cpu *cpu, uint64_t frame_pointer, uint64_t pc)\n } while (frame_pointer && pc && depth < UNWIND_STACK_MAX_DEPTH);\n #undef UNWIND_STACK_MAX_DEPTH\n \n+after_unwind:\n /* push it from bottom to top */\n while (depth) {\n callstack_push(cpu->cs, unwind[depth - 1]);\n", "prefixes": [ "1/4" ] }