{"id":2228988,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2228988/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260427154441.1918536-2-rkir@google.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","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":""},"msgid":"<20260427154441.1918536-2-rkir@google.com>","date":"2026-04-27T15:44:40","name":"[1/2] qom: improve use-after-free debugging","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"f04a47cd5862037e6306d6a51bfee321aea6a2b9","submitter":{"id":78520,"url":"http://patchwork.ozlabs.org/api/1.1/people/78520/?format=json","name":"Roman Kiryanov","email":"rkir@google.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260427154441.1918536-2-rkir@google.com/mbox/","series":[{"id":501681,"url":"http://patchwork.ozlabs.org/api/1.1/series/501681/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501681","date":"2026-04-27T15:44:39","name":"improve qom debugging and fix a dangling MemoryRegion in rutabaga","version":1,"mbox":"http://patchwork.ozlabs.org/series/501681/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2228988/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2228988/checks/","tags":{},"headers":{"Return-Path":"","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=google.com header.i=@google.com header.a=rsa-sha256\n header.s=20251104 header.b=lp0lpi7/;\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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Mon, 27\n Apr 2026 08:48:07 -0700 (PDT)","Date":"Mon, 27 Apr 2026 15:44:40 +0000","In-Reply-To":"<20260427154441.1918536-1-rkir@google.com>","Mime-Version":"1.0","References":"<20260427154441.1918536-1-rkir@google.com>","X-Mailer":"git-send-email 2.54.0.rc2.544.gc7ae2d5bb8-goog","Message-ID":"<20260427154441.1918536-2-rkir@google.com>","Subject":"[PATCH 1/2] qom: improve use-after-free debugging","From":"Roman Kiryanov ","To":"pbonzini@redhat.com, alex.bennee@linaro.org","Cc":"qemu-devel@nongnu.org, Roman Kiryanov ","Content-Type":"text/plain; charset=\"UTF-8\"","Received-SPF":"pass client-ip=2607:f8b0:4864:20::1049;\n envelope-from=3N4XvaQQKClYF86F4CC492.0CAE2AI-12J29BCB4BI.CF4@flex--rkir.bounces.google.com;\n helo=mail-pj1-x1049.google.com","X-Spam_score_int":"-95","X-Spam_score":"-9.6","X-Spam_bar":"---------","X-Spam_report":"(-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001,\n DKIM_SIGNED=0.1, 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, SPF_PASS=-0.001,\n USER_IN_DEF_DKIM_WL=-7.5 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 ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"This patch invalidates dead objects so their usage will\nlead to more predictable results (crashes or asserts).\n\nChange-Id: I1dc36dbc1030c2e41c937f08baa97b2e81d44c82\nSigned-off-by: Roman Kiryanov \n---\n qom/object.c | 3 +++\n 1 file changed, 3 insertions(+)","diff":"diff --git a/qom/object.c b/qom/object.c\nindex f981e27044..240e36c39e 100644\n--- a/qom/object.c\n+++ b/qom/object.c\n@@ -613,6 +613,7 @@ static void object_property_del_all(Object *obj)\n } while (released);\n \n g_hash_table_unref(obj->properties);\n+ obj->properties = NULL;\n }\n \n static void object_property_del_child(Object *obj, Object *child)\n@@ -670,6 +671,8 @@ static void object_finalize(void *data)\n \n g_assert(obj->ref == 0);\n g_assert(obj->parent == NULL);\n+ g_assert(obj->properties == NULL);\n+ obj->class = NULL;\n if (obj->free) {\n obj->free(obj);\n }\n","prefixes":["1/2"]}