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[79.208.80.186]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-46e32bf61b1sm88009965e9.2.2025.09.28.21.32.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 28 Sep 2025 21:32:47 -0700 (PDT) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 4DC7021E6A27; Mon, 29 Sep 2025 06:32:46 +0200 (CEST) From: Markus Armbruster To: "Duan, Zhenzhong" Cc: "qemu-devel@nongnu.org" , "alex.williamson@redhat.com" , "clg@redhat.com" , "eric.auger@redhat.com" , "steven.sistare@oracle.com" Subject: Re: [PATCH 5/5] accel/kvm: Fix SIGSEGV when execute "query-balloon" after CPR transfer In-Reply-To: (Zhenzhong Duan's message of "Sun, 28 Sep 2025 08:13:11 +0000") References: <20250926022540.1884023-1-zhenzhong.duan@intel.com> <87v7l5stsj.fsf@pond.sub.org> Date: Mon, 29 Sep 2025 06:32:46 +0200 Message-ID: <875xd1anf5.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-getmail-retrieved-from-mailbox: [Gmail]/All Mail X-GMAIL-LABELS: "\\Sent" X-GMAIL-THRID: 1844291735063470039 X-GMAIL-MSGID: 1844571398150629311 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.539, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H5=-1, RCVD_IN_MSPIKE_WL=-0.01, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001, T_SPF_TEMPERROR=0.01 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 "Duan, Zhenzhong" writes: >>-----Original Message----- >>From: Markus Armbruster [...] >>Is freeing @kvm_state after CPR transfer useful? > > kvm_state was NULLed, let me try to keep it for query just like in kernel > task struct is retained when child process exit. > > I'd like to add your Suggested-by on this if you don't object. I don't :)