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GET /api/patches/2230897/?format=api
{ "id": 2230897, "url": "http://patchwork.ozlabs.org/api/patches/2230897/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260430074420.26697-7-ja@ssi.bg/", "project": { "id": 26, "url": "http://patchwork.ozlabs.org/api/projects/26/?format=api", "name": "Netfilter Development", "link_name": "netfilter-devel", "list_id": "netfilter-devel.vger.kernel.org", "list_email": "netfilter-devel@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260430074420.26697-7-ja@ssi.bg>", "list_archive_url": null, "date": "2026-04-30T07:44:18", "name": "[PATCHv3,nf,6/8] ipvs: fix shift-out-of-bounds in ip_vs_rht_desired_size", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5d2c28c1d04bd61b3f6d52e03300a101f712b97d", "submitter": { "id": 2825, "url": "http://patchwork.ozlabs.org/api/people/2825/?format=api", "name": "Julian Anastasov", "email": "ja@ssi.bg" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260430074420.26697-7-ja@ssi.bg/mbox/", "series": [ { "id": 502227, "url": "http://patchwork.ozlabs.org/api/series/502227/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/list/?series=502227", "date": "2026-04-30T07:44:12", "name": "IPVS fixes for nf", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/502227/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230897/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2230897/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <netfilter-devel+bounces-12327-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "netfilter-devel@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (4096-bit key;\n unprotected) header.d=ssi.bg header.i=@ssi.bg header.a=rsa-sha256\n header.s=ssi header.b=CEh5f4GD;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c15:e001:75::12fc:5321; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1777535305; cv=none;\n b=eEgBWRnUFSrdTr3dx6yksAvxLJrECTj0QNKA++3vX01ORAV6v9WliyLXtZ+Xb0x1g60CjyaIJGmmStYCkiai32qGPM967rhQYscMV2nW4BGY8Ge+gFbNjkWTT4wPX7DPs5zouX4nvtnF2mTPffTZ4/NCZzxlNHhcN5XGLJf2ONw=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1777535305; c=relaxed/simple;\n\tbh=C2hWpN7sSjdGkm4rOVk6n/xWQGh7Kysu6wMLYYWievA=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=KE18zgPGK8ZcMR4ZkDhm7G6qcLamQesV4tE/fwH1oD0v8sX3AKs7qgrFCKZ2MD5HOUtAlEshGh0+rjlPCykcabLlGmDd7g9/D3YJ8Z1M6xNm7netFfHTPNAM33chCVCvxmqhJTdP72f59yOKOfuIhARkSLdIYE2MrMmk9syvvvo=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dmarc=pass (p=reject dis=none) header.from=ssi.bg;\n spf=pass smtp.mailfrom=ssi.bg;\n dkim=pass (4096-bit key) header.d=ssi.bg header.i=@ssi.bg header.b=CEh5f4GD;\n arc=none smtp.client-ip=193.238.174.39", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=ssi.bg; h=cc:cc\n\t:content-transfer-encoding:date:from:from:in-reply-to:message-id\n\t:mime-version:references:reply-to:subject:subject:to:to; s=ssi;\n\t bh=Uqax325+N5JDs/S0EJd8JLZMGuyA5PI6DaXMbKDlAP4=; b=CEh5f4GDo9s0\n\thrY2APBtEq1mtRLihUwrP1iEC4NzVCCiqNb/uXkMBMD1dDlfmV3bCi9+I1g2c3Kb\n\t164dYHYPY3urvIqu1UtHuVaw1do1wX7GOeQEx/QBDWPCPXZntM/aBTxhgECwm8nY\n\tGo4rwEgypJ2n4jH+O57fhqWP+28KevpGLmmdCyZ4bZV+fQWAst1cLdTSlOtUIq7p\n\tg87K+esT2aQxzwr20G6f4EZdu+++vNdeBFYLTxTgYyTivn/evVcV2U1YBHkBiDYl\n\ttE5qLGWi1T9e0rwIcGzs63Q6nNg4rZX37+mUNJ0Wyk2Zvr/A1nfCZa5AHWyF1xMy\n\tYFI8IMajbxS+LGaOAk6oTwgONtKyzTn1Rde06lUYVR8EcNLVjVgcT4FKdWvesHy0\n\tSUvLnjzfIGbeDYXYZi6tKXxdX8/UvxnESR0kZQzm3H0XS0VjMkdUfya9ij0VbJN5\n\tSHJCsD0EF5xRjnvJLyFt0t+8tTK9ni6HMqxO00SUgLBSpbaamG4uOyYREQQc78Th\n\tnrLsbrADVZbrYd8xJRSUotd/d2gBLgq9tAuXZNqQsCmThp5JhDmuUnSUn6rMW98Z\n\tBjmD/4EUYfJAiDCEw0sVSFmJdTJUGS2d4MxjPCnZX/NA2py5pmGNBHeSbujbSRX1\n\tjB5VTqBEgmmKf2boR2YtVod412MnWrU=", "From": "Julian Anastasov <ja@ssi.bg>", "To": "Simon Horman <horms@verge.net.au>", "Cc": "Pablo Neira Ayuso <pablo@netfilter.org>, Florian Westphal <fw@strlen.de>,\n Waiman Long <longman@redhat.com>, lvs-devel@vger.kernel.org,\n netfilter-devel@vger.kernel.org", "Subject": "[PATCHv3 nf 6/8] ipvs: fix shift-out-of-bounds in\n ip_vs_rht_desired_size", "Date": "Thu, 30 Apr 2026 10:44:18 +0300", "Message-ID": "<20260430074420.26697-7-ja@ssi.bg>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260430074420.26697-1-ja@ssi.bg>", "References": "<20260430074420.26697-1-ja@ssi.bg>", "Precedence": "bulk", "X-Mailing-List": "netfilter-devel@vger.kernel.org", "List-Id": "<netfilter-devel.vger.kernel.org>", "List-Subscribe": "<mailto:netfilter-devel+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:netfilter-devel+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit" }, "content": "Calling roundup_pow_of_two() with 0 has undefined result:\n\nUBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\nshift exponent 64 is too large for 64-bit type 'unsigned long'\nCPU: 1 UID: 0 PID: 77 Comm: kworker/u8:4 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026\nWorkqueue: events_unbound conn_resize_work_handler\nCall Trace:\n <TASK>\n dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120\n ubsan_epilogue+0xa/0x30 lib/ubsan.c:233\n __ubsan_handle_shift_out_of_bounds+0x385/0x410 lib/ubsan.c:494\n __roundup_pow_of_two include/linux/log2.h:57 [inline]\n ip_vs_rht_desired_size+0x2cf/0x410 net/netfilter/ipvs/ip_vs_core.c:240\n ip_vs_conn_desired_size net/netfilter/ipvs/ip_vs_conn.c:765 [inline]\n conn_resize_work_handler+0x1b6/0x14c0 net/netfilter/ipvs/ip_vs_conn.c:822\n process_one_work kernel/workqueue.c:3302 [inline]\n process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385\n worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466\n kthread+0x388/0x470 kernel/kthread.c:436\n ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245\n </TASK>\n\nReported-by: syzbot+217f1db9c791e27fe54a@syzkaller.appspotmail.com\nFixes: b655388111cf (\"ipvs: add resizable hash tables\")\nSigned-off-by: Julian Anastasov <ja@ssi.bg>\n---\n net/netfilter/ipvs/ip_vs_core.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)", "diff": "diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c\nindex f5b7a2047291..d40b404c1bf6 100644\n--- a/net/netfilter/ipvs/ip_vs_core.c\n+++ b/net/netfilter/ipvs/ip_vs_core.c\n@@ -237,7 +237,7 @@ int ip_vs_rht_desired_size(struct netns_ipvs *ipvs, struct ip_vs_rht *t, int n,\n {\n \tif (!t)\n \t\treturn 1 << min_bits;\n-\tn = roundup_pow_of_two(n);\n+\tn = n > 0 ? roundup_pow_of_two(n) : 1;\n \tif (lfactor < 0) {\n \t\tint factor = min(-lfactor, max_bits);\n \n", "prefixes": [ "PATCHv3", "nf", "6/8" ] }