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GET /api/1.2/patches/2226343/?format=api
{ "id": 2226343, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2226343/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ovn/patch/20260422120003.445795-1-dceara@redhat.com/", "project": { "id": 68, "url": "http://patchwork.ozlabs.org/api/1.2/projects/68/?format=api", "name": "Open Virtual Network development", "link_name": "ovn", "list_id": "ovs-dev.openvswitch.org", "list_email": "ovs-dev@openvswitch.org", "web_url": "http://openvswitch.org/", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260422120003.445795-1-dceara@redhat.com>", "list_archive_url": null, "date": "2026-04-22T12:00:03", "name": "[ovs-dev] lib: Fix dynamic_bitmap_last_set() on 32-bit architectures.", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "e426fd7a9720a4f458fad2481aa9aa4c567864b4", "submitter": { "id": 76591, "url": "http://patchwork.ozlabs.org/api/1.2/people/76591/?format=api", "name": "Dumitru Ceara", "email": "dceara@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/ovn/patch/20260422120003.445795-1-dceara@redhat.com/mbox/", "series": [ { "id": 500998, "url": "http://patchwork.ozlabs.org/api/1.2/series/500998/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ovn/list/?series=500998", "date": "2026-04-22T12:00:03", "name": "[ovs-dev] lib: Fix dynamic_bitmap_last_set() on 32-bit architectures.", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500998/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2226343/comments/", "check": "fail", "checks": "http://patchwork.ozlabs.org/api/patches/2226343/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<ovs-dev-bounces@openvswitch.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "ovs-dev@openvswitch.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "ovs-dev@lists.linuxfoundation.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=ga4yu00N;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=openvswitch.org\n (client-ip=2605:bc80:3010::133; 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helo=lists.linuxfoundation.org;\n envelope-from=ovs-dev-bounces@openvswitch.org; receiver=<UNKNOWN> ", "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 smtp2.osuosl.org 2A514422DC", "OpenDKIM Filter v2.11.0 smtp4.osuosl.org 84AD64081E" ], "Received-SPF": "Pass (mailfrom) identity=mailfrom; client-ip=170.10.129.124;\n helo=us-smtp-delivery-124.mimecast.com; envelope-from=dceara@redhat.com;\n receiver=<UNKNOWN>", "DMARC-Filter": "OpenDMARC Filter v1.4.2 smtp4.osuosl.org 84AD64081E", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1776859209;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding;\n bh=mhMCf1Lkq2gQdIm8/c/QYlSaa7TiMcPYowD+7cUNEmQ=;\n b=ga4yu00NYVdumuUj0No2hbk8JRTsY7glJhRGZBWXxB5glztBB2WdqrROEW9shhsiHzu0C0\n +kgeYWvxLjWxa2CEJERj+10mE4DW+22MDpkCJOOqR2gEbQ6MEUw2KujHjRnxPkYhQomXO1\n RRifOImXB+yADjPx8Ann5u12URoupAw=", "X-MC-Unique": "dcQu0S4YORmYX8s--bltQw-1", "X-Mimecast-MFC-AGG-ID": "dcQu0S4YORmYX8s--bltQw_1776859207", "To": "ovs-dev@openvswitch.org", "Date": "Wed, 22 Apr 2026 14:00:03 +0200", "Message-ID": "<20260422120003.445795-1-dceara@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.4.1 on 10.30.177.93", "X-Mimecast-Spam-Score": "0", "X-Mimecast-MFC-PROC-ID": "dOOAA8u0KEtaISy3bJveTUSuu0qeEm7_e2e_anWdcT0_1776859207", "X-Mimecast-Originator": "redhat.com", "Subject": "[ovs-dev] [PATCH ovn] lib: Fix dynamic_bitmap_last_set() on 32-bit\n architectures.", "X-BeenThere": "ovs-dev@openvswitch.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "<ovs-dev.openvswitch.org>", "List-Unsubscribe": "<https://mail.openvswitch.org/mailman/options/ovs-dev>,\n <mailto:ovs-dev-request@openvswitch.org?subject=unsubscribe>", "List-Archive": "<http://mail.openvswitch.org/pipermail/ovs-dev/>", "List-Post": "<mailto:ovs-dev@openvswitch.org>", "List-Help": "<mailto:ovs-dev-request@openvswitch.org?subject=help>", "List-Subscribe": "<https://mail.openvswitch.org/mailman/listinfo/ovs-dev>,\n <mailto:ovs-dev-request@openvswitch.org?subject=subscribe>", "From": "Dumitru Ceara via dev <ovs-dev@openvswitch.org>", "Reply-To": "Dumitru Ceara <dceara@redhat.com>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ovs-dev-bounces@openvswitch.org", "Sender": "\"dev\" <ovs-dev-bounces@openvswitch.org>" }, "content": "raw_clz64() always operates on uint64_t, so it counts leading zeros\nfrom bit 63. The original expression used (BITMAP_ULONG_BITS - 1)\nwhich is 31 on 32-bit architectures where unsigned long is 32 bits.\nWhen a 32-bit value is implicitly promoted to uint64_t, raw_clz64()\nreturns a value 32 higher than expected, making the subtraction\nproduce incorrect (negative) results.\n\nUse the constant 63 to match raw_clz64()'s 64-bit input width.\n\nFixes: 39eb5b573388 (\"Add sparse array.\")\nAssisted-by: Claude, with model: claude-opus-4-6\nSigned-off-by: Dumitru Ceara <dceara@redhat.com>\n---\nNOTE: 32-bit OVN deployments are unlikely to exist in the wild, but\nthis fix ensures correctness in case someone attempts to build OVN\nfor a 32-bit target.\n---\n lib/ovn-util.h | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)", "diff": "diff --git a/lib/ovn-util.h b/lib/ovn-util.h\nindex bcb344de44..b44c9c770a 100644\n--- a/lib/ovn-util.h\n+++ b/lib/ovn-util.h\n@@ -549,8 +549,8 @@ dynamic_bitmap_last_set(const struct dynamic_bitmap *db)\n continue;\n }\n \n- return (BITMAP_ULONG_BITS - 1) - raw_clz64(db->map[i])\n- + (BITMAP_ULONG_BITS * i);\n+ /* raw_clz64() operates on values promoted to uint64_t (64-bit). */\n+ return 63 - raw_clz64(db->map[i]) + (BITMAP_ULONG_BITS * i);\n }\n \n return -1;\n", "prefixes": [ "ovs-dev" ] }