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Fri, 13 Nov 2026 02:10:08 -0800 (PST) Received: from Ubuntu.netapp.com ([136.226.244.207]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b1aec3af2dsm3826016a91.9.2026.11.13.02.10.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Nov 2026 02:10:07 -0800 (PST) From: Martin George X-Google-Original-From: Martin George To: linux-nvme@lists.infradead.org, hch@lst.de Cc: kbusch@kernel.org, sagi@grimberg.me Subject: [PATCH 0/2] nvme-fabrics: bound reconnect_delay and keep_alive_tmo Date: Fri, 13 Nov 2026 15:39:49 +0530 Message-ID: <20261113100951.17577-1-marting@netapp.com> X-Mailer: git-send-email 2.53.0 X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261113_021009_704059_A8F9A801 X-CRM114-Status: UNSURE ( 8.87 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.1 (--) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 reconnect_delay and keep_alive_tmo (kato) are accepted in seconds but later multiplied by HZ (and, for kato, by 1000) in 32-bit arithmetic, so large values overflow and yield bogus timers. Bound both at parse/store time so the conversions can't wrap. The target already does this for kato via NVMET_MAX_KATO, and the host recently fixed the same class for admin_timeout/io_timeout (4a5aeebf1a00) and partly for reconnect_delay (f92fe8dea19c). Martin George (2): nvme-fabrics: bound reconnect_delay to avoid timer overflow nvme-fabrics: bound keep_alive_tmo to avoid overflow drivers/nvme/host/fabrics.c | 4 ++-- drivers/nvme/host/sysfs.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) -- 2.53.0