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[130.117.225.111]) by mx.google.com with ESMTPS id ffacd0b85a97d-4870bf2f7fasi1195123f8f.73.2026.09.15.13.42.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Sep 2026 13:42:08 -0700 (PDT) Received-SPF: pass (google.com: domain of khorenko@virtuozzo.com designates 130.117.225.111 as permitted sender) client-ip=130.117.225.111; Authentication-Results: mx.google.com; dkim=pass header.i=@virtuozzo.com header.s=relay header.b=CDXC93JM; spf=pass (google.com: domain of khorenko@virtuozzo.com designates 130.117.225.111 as permitted sender) smtp.mailfrom=khorenko@virtuozzo.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=virtuozzo.com DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuozzo.com; s=relay; h=Message-Id:Date:From:Subject:Content-Type: MIME-Version; bh=GEwQmbsAPyVMzX7LF2EFzVX8uf6UaqFtZyEediieEOk=; b=CDXC93JMu4/1 4p0YS3aXSTT++oQnp35c/IFDw4axdD+VvwaHKdcsV+vh0n1zSot0OCG2mPgGauE9zAixVd+T7rw2q 7evyfFE3yofPi3+b54OQL9XjDuiFQa6dNTYkWsseOmP8c6zwWO9ZisTKynIsnBxVwq29d8SpoqzIu wQAMlHzEHQw0Bx8OXwi6gw529YVnNbTXTPuNEKg1vTyrWg2CVmFDyxeIVf8l4R3cl2HWD/0SIhB/i GrikIpvkFBPomo5+NS3UjbdD7CGJPbCCxhY9Jvp7Ep8IkHq3DLoT/GCsdYMYocRNjzu3JYlVugun9 AdrsWSBZWt3MXLyCtSfmRA==; Received: from ch-demo-asa.virtuozzo.com ([130.117.225.8] helo=f0.sw.ru) by relay.virtuozzo.com with esmtp (Exim 4.96) (envelope-from ) id 1x6Zvy-002feb-1u; Tue, 15 Sep 2026 22:41:57 +0200 MIME-Version: 1.0 From: Konstantin Khorenko To: "Denis V. Lunev" In-Reply-To: <20260915114849.3869609-1-den@openvz.org> References: <20260915114849.3869609-1-den@openvz.org> Date: Tue, 15 Sep 2026 22:42:04 +0200 Message-Id: <178950492496.2412229.2603262189008554175.b4-review@b4> X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=804; i=khorenko@virtuozzo.com; h=from:subject:message-id; bh=gEpa55wqcabATHFrRlQfFQ1ryMphxeY2ZFOYRXM0lW0=; b=owEBbQKS/ZANAwAKAVGWCkf5YVwqAcsmYgBqqa2fItvhptauLL2FeLOtjWMzs5JRSjeKnG7/r gYbhDiHFgaJAjMEAAEKAB0WIQRWD23IPcXT0GO9CCxRlgpH+WFcKgUCaqmtnwAKCRBRlgpH+WFc KrrFEACC969bMYFfHP8XnkKlPxttClmjWwTZpJTJkE3HHdd3kVSNcVArGGtcbS/ZSLi8/t4N8Lm NlCAoYHSTRst7kCajMFAVoHR2IT/mi3/hmVfhCIpwj8IOH7yGUOIzUDrFqULGM84dywUznGeuUk 4lVTU4kYY8HQstcSqHq7s/0xlViRxECm8BuD6+dgwasUUaPfE1sAXfwt/vlmkAZpN8Y/pU1+RW4 oWMTfFzPOxOBY8b+NNVN8IcOas4ax/F85l2VhP3Ome8PBrPCvE9KBgCZ/FLJafxZxMSzGj3YCV7 3AX81zaNijTHjTfzOY0eatHgdGLKLuVouAwcIC9hXTT1tFhBhRkwWVr3aUSsoM7qR3cp6woHM3T JJ6iiASCLsq5eUtnzfEBwE/szfdMOCV6c8eEtm6o8u3qMI3WwILWS9kMff23qQD3E21Ix4qYSzv ls/E4CFnI3J0QfRzfQRfcKrapDhQUzcdQ+bv4aSq979WSMJMv+FUmmeh5+5fhW40uQukNhA/FkU CfD7wqPrXako07qgCmBQjbH05W/xDaRhvITpC8ohqLJ+u4PplEPpapqIXPAmAtije2yUDLXNBPQ AgO1C/tWnKhfuNc9F7YIxL+GgWRlK7UQE3fcSF3FUrH1sTcjfKjBvr3bR7vhyBQJmzklPox8e6/ /bsb/d/uaY7UMYA== X-Developer-Key: i=khorenko@virtuozzo.com; a=openpgp; fpr=560F6DC83DC5D3D063BD082C51960A47F9615C2A X-OZ-Fwd: true Cc: devel@openvz.org Subject: Re: [Devel] [PATCH vz10-latest 1/1] openvswitch: fix soft lockup in the netlink dump callbacks #VSTOR-144650 X-BeenThere: devel@openvz.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: OpenVZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org On Tue, 15 Sep 2026 13:48:49 +0200, Denis V. Lunev wrote: > A production compute node carrying a few thousand datapath flows and > ports hit a soft lockup inside a single netlink flow dump and panicked. > > ovs_flow_cmd_dump() calls ovs_flow_stats_get() for every flow it > emits, and that releases stats->lock with spin_unlock_bh() once per > CPU that has touched the flow. ovs_vport_cmd_dump() calls > peernet2id_alloc() for every vport that lives in a foreign netns, and > that releases nsid_lock with spin_unlock_bh(). Every release is a > local_bh_enable(), and each one runs the pending softirq backlog in > the dumping thread's own context. > > [...] Reviewed-by: Konstantin Khorenko -- Konstantin Khorenko _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel