From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8CD08CCD18E for ; Tue, 14 Oct 2025 19:20:36 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v8kYw-0005zm-To; Tue, 14 Oct 2025 15:19:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1v8kYv-0005ys-7g for qemu-devel@nongnu.org; Tue, 14 Oct 2025 15:19:57 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1v8kYq-0007YZ-Ba for qemu-devel@nongnu.org; Tue, 14 Oct 2025 15:19:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1760469590; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=JGzv6qpTQRESEn5jHN8oCpazSZso4w/T7gv0IOoWdM4=; b=HUJfBf32fE+aBFoy37xgPp3HOqMOren6OwVwOy1/KuIUpQYVsM1A9mnT+rKhFcEAmMXKs+ FC3kNHD6HzT3IipIVxCd4wE1WKtQIbORBvdRL5rv6ql/dHB/UBSppebeqLbZtcJgu/ovAn xjdLmiwZAB3JBgZVMdUte/etRGNkobY= Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-649-CWVm6VP5May5yr0oFDhXmQ-1; Tue, 14 Oct 2025 15:19:48 -0400 X-MC-Unique: CWVm6VP5May5yr0oFDhXmQ-1 X-Mimecast-MFC-AGG-ID: CWVm6VP5May5yr0oFDhXmQ_1760469588 Received: by mail-qk1-f197.google.com with SMTP id af79cd13be357-870d82c566fso77997385a.1 for ; Tue, 14 Oct 2025 12:19:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760469588; x=1761074388; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=JGzv6qpTQRESEn5jHN8oCpazSZso4w/T7gv0IOoWdM4=; b=hyJbR586ce8Ek2Lk7xAglsifdFzo+vp3QdDO+AtyHW3lagTDn9mjpzqTQJ02p44tkJ u/IjFYZ3RcDC2/ar0h+r4fbTNAx5ChWtWqgnrgluqdxGVQFYdvtyEz1rE0ich5u9gqiF F1/XiS9blFJbyPD571yEaOoWQsIxnM5iywhW8ocubQdlZoX88KRyTKY89pdeRlAT+P2a PdM2Uj/JXuyT2uk85hXL/FtdCRRE1t00P+9fUzxJikQkqMzuYEmN4XgxM+rLHLXiIDQj u7dlYQR1c8fTf5Jx5uAdlUrWMeOHOyqVlx+fmGYjuUDjZQenUBPk1zEMHMAMQQ0XBH1d UKqA== X-Gm-Message-State: AOJu0YzFoB/5AtETVktywmF1xnLpzMOrk7qWKwFLFAazf7BWWEW7RB4W YC5SRRf2Q+DRxxSkApyXX2naiJWD17h5Y3XVeOs29PZ0HY29pWFACmrVUW91AucVAwAp1CxObjS Tt5MsFssjly6UcM1JGm8jz7oc2bMruWfhrUG4+zWSugQ12yj9IiToFxjmVA8EI+C/dd5oqjAM+c 1mmyTyj7VGnk5pWLNniAYyezXXevPf0thiQDvttg== X-Gm-Gg: ASbGnctSp44mpOME07FsN3qVZ5tsj0bX7f1PM7EGLfFhzCAUmsPecnSirBaf5UJgwMH kFEV/Jf8jw3d78V+nSnA1NWmqw/nabsIsRNiVuCVQaTeilnWn1YL2q5nb9D8EEEqM9+gFVDoisj Tw34e2bYEBV75R06fLyeiH66AYHHO+q0BKE+em6zFcF4ZkfK8CPnNbHv7tpFVdGIGrquXcxZNFx 0wcmszRG2zzaIgogJdE8q3+Sqd/EiNsDL2IjcTSim22h2nQFAIiviBk8IiSfJXegE9zWqzObqb7 8JHlCscxjEXC/G0AnobnAm6vXvW6/A== X-Received: by 2002:a05:620a:199f:b0:810:7b97:478 with SMTP id af79cd13be357-8820d75adbdmr3570123585a.42.1760469587817; Tue, 14 Oct 2025 12:19:47 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFxaUO/dF7Ppc8Cb+4XPXh2ZMcCXhg6b/5kA4qXqa53RPqvIBhKHmNHJMGleoSaGKVnBThdMw== X-Received: by 2002:a05:620a:199f:b0:810:7b97:478 with SMTP id af79cd13be357-8820d75adbdmr3570118485a.42.1760469587164; Tue, 14 Oct 2025 12:19:47 -0700 (PDT) Received: from x1.com ([142.188.210.50]) by smtp.gmail.com with ESMTPSA id af79cd13be357-884a22744f2sm1256602585a.44.2025.10.14.12.19.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Oct 2025 12:19:46 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Cc: Peter Maydell , Paolo Bonzini , Stefan Hajnoczi , peterx@redhat.com, Richard Henderson , "Emilio G . Cota" Subject: [PATCH v2 0/3] rcu: Detect accidental reuse of rcu head Date: Tue, 14 Oct 2025 15:19:41 -0400 Message-ID: <20251014191944.2225735-1-peterx@redhat.com> X-Mailer: git-send-email 2.50.1 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.129.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org v2: - Change patch 2 subject and wording to avoid mentioning "double free" [PeterM] This is an idea suggested by Peter Maydell: https://lore.kernel.org/all/CAFEAcA--K0=EJNNvj98i=ewGY=tN3u4S0+fNb9kJpYynzjHEhw@mail.gmail.com/ After this small series applied, we should be able to assert on misuse of accidental (wrong) re-use on a rcu head. Please review, thanks. Peter Xu (3): qht: Zero-initialize qht_map tests/test-rcu-*: Zero-initialize allocated elements rcu: Catch rcu_head misuse tests/unit/test-rcu-list.c | 4 ++-- util/qht.c | 2 +- util/rcu.c | 5 +++++ 3 files changed, 8 insertions(+), 3 deletions(-) -- 2.50.1