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Mon, 29 Sep 2025 12:08:05 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEPZjpvvOsystAqiLGeUBCYXzdPNH4TzWaN0T5jfauJtTgSKDZ4Dx51vb/N2Hg6+qjvy03scw== X-Received: by 2002:a05:622a:311:b0:4b5:dc4f:7d67 with SMTP id d75a77b69052e-4e27f5228a8mr21017781cf.27.1759172885262; Mon, 29 Sep 2025 12:08:05 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Stefan Hajnoczi , Peter Maydell , Richard Henderson , "Emilio G . Cota" , peterx@redhat.com Subject: [PATCH 2/3] tests/test-rcu-*: Zero-initialize allocated elements Date: Mon, 29 Sep 2025 15:08:00 -0400 Message-ID: <20250929190801.931989-3-peterx@redhat.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250929190801.931989-1-peterx@redhat.com> References: <20250929190801.931989-1-peterx@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.513, 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_H4=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1759172931121116600 Content-Type: text/plain; charset="utf-8" QEMU almost always do this, so do it too with the RCU unit tests. It's preparation work to start asserting on possible rcu double free. Signed-off-by: Peter Xu --- tests/unit/test-rcu-list.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/unit/test-rcu-list.c b/tests/unit/test-rcu-list.c index 8f0adb8b00..853c9e33d9 100644 --- a/tests/unit/test-rcu-list.c +++ b/tests/unit/test-rcu-list.c @@ -233,7 +233,7 @@ static void *rcu_q_updater(void *arg) TEST_LIST_FOREACH_RCU(el, &Q_list_head, entry) { j++; if (target_el =3D=3D j) { - struct list_element *new_el =3D g_new(struct list_element,= 1); + struct list_element *new_el =3D g_new0(struct list_element= , 1); n_nodes_local++; TEST_LIST_INSERT_AFTER_RCU(el, new_el, entry); break; @@ -259,7 +259,7 @@ static void rcu_qtest_init(void) nthreadsrunning =3D 0; srand(time(0)); for (i =3D 0; i < RCU_Q_LEN; i++) { - new_el =3D g_new(struct list_element, 1); + new_el =3D g_new0(struct list_element, 1); TEST_LIST_INSERT_HEAD_RCU(&Q_list_head, new_el, entry); } qemu_mutex_lock(&counts_mutex); --=20 2.50.1