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envelope-from=boris.ostrovsky@oracle.com; helo=mx0b-00069f02.pphosted.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Tue, 30 Apr 2024 16:01:10 -0400 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 On 4/30/24 10:27 AM, Igor Mammedov wrote: > On Fri, 3 Nov 2023 13:56:02 +0300 > Dmitrii Gavrilov wrote: > > Seems related to cpu hotpug issues, > CCing Boris for awareness. Thank you Igor. This patch appears to change timing in my test which makes the problem much more difficult to reproduce. However, it can still be triggered if I insert a delay after qdev_device_add() which is roughly equivalent to what was happening in drain_call_rcu(). (https://lore.kernel.org/kvm/534247e4-76d6-41d2-86c7-0155406ccd80@oracle.com/ for context) -boris