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bh=kGF7H7FFFcNd6N9OaY7OvE8fL32uRDb/bcgWARGuxFQ=; b=AJQbw3zxnLUL5szzSNEflpLZTzk/oMM1fa2Bl/1DVqTUveaEa61n1tPSj204acBTa5 dmitUpHU6/FTslqVcYuenfS2QN2OHFosG+Z/jxoSQ5yfp7qR6af12wK7u8bpicqUbCty l6yGT58sUQijsMLr+sLX4w+mTC2lVaPaEiZbncszO1wz5S4clra3uPZ7Hi3NSTdhIKF+ tNl/JepptAb1JU5ofOuzV4ckSbMS/CbVCkevYoJTB2me4uBWIBe8zV+jlb+JB8f0TKsF ORQ56sqkTDBvrqaJpzmzpcWXRAk0zMAclJJsdc2J07UrEXA+Sc/Z0O7MsgeJceVErMf2 Q42Q== X-Gm-Message-State: AOAM531tgE/EfYO9MV223ZRzBArBgeUwF26RnZu4D05QdTqFly7/Dw4P sy0NT1l8iyWEttgWpYHP6sxyRP36sWZvhQ== X-Google-Smtp-Source: ABdhPJztQqekVMrQL/BpGd6FFu/roDvJd52EVHvD4y8iyAulQIAeACoj4ckPM4gkzij6ptkoXDiF4Q== X-Received: by 2002:a63:700c:: with SMTP id l12mr12474469pgc.137.1610713176180; Fri, 15 Jan 2021 04:19:36 -0800 (PST) From: Minwoo Im To: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [PATCH] hw/block/nvme: error if drive less than a zone size Date: Fri, 15 Jan 2021 21:19:20 +0900 Message-Id: <20210115121920.10386-1-minwoo.im.dev@gmail.com> X-Mailer: git-send-email 2.17.1 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::535; envelope-from=minwoo.im.dev@gmail.com; helo=mail-pg1-x535.google.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Keith Busch , Klaus Jensen , Minwoo Im , Kevin Wolf , Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" If a user gives backing device file less than a single zone size, the namespace capacity will be reported to 0 and the kerenl will fail to allocate namespace silently. This patch errors in case that num_zones are 0 which is backing device is less than a single zone size. Signed-off-by: Minwoo Im --- hw/block/nvme-ns.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/block/nvme-ns.c b/hw/block/nvme-ns.c index 274eaf61b721..98690d030379 100644 --- a/hw/block/nvme-ns.c +++ b/hw/block/nvme-ns.c @@ -137,6 +137,13 @@ static int nvme_ns_zoned_check_calc_geometry(NvmeNames= pace *ns, Error **errp) ns->num_zones =3D ns->size / lbasz / ns->zone_size; =20 /* Do a few more sanity checks of ZNS properties */ + if (!ns->num_zones) { + error_setg(errp, + "num_zone is 0, drive must be larger than a zone %luB", + zone_size); + return -1; + } + if (ns->params.max_open_zones > ns->num_zones) { error_setg(errp, "max_open_zones value %u exceeds the number of zones %u= ", --=20 2.17.1