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([2620:10d:c092:600::1:541b]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cbe39ea0a73sm4753273a12.23.2026.08.04.01.41.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Aug 2026 01:42:05 -0700 (PDT) Message-ID: <53c9cf90-4284-4b6a-ab2f-1686c7461bf8@gmail.com> Date: Tue, 4 Aug 2026 09:41:47 +0100 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 09/16] nvme-pci: implement dma-buf backed requests To: Anuj Gupta/Anuj Gupta , Jens Axboe , Keith Busch , Christoph Hellwig , Sagi Grimberg , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Cc: Alexander Viro , Christian Brauner , Andrew Morton , Sumit Semwal , =?UTF-8?Q?Christian_K=C3=B6nig?= , Nitesh Shetty , Kanchan Joshi , Jason Gunthorpe , Damien Le Moal , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Benjamin Marzinski , David Sterba , Ilya Dryomov , dm-devel@lists.linux.dev, nvdimm@lists.linux.dev, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org References: <9e3dd1b2d71dc0f9bd556b6a6d6e48fb6a8d727b.1785596451.git.asml.silence@gmail.com> Content-Language: en-US From: Pavel Begunkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 8/4/26 08:29, Anuj Gupta/Anuj Gupta wrote: > On 8/1/2026 9:16 PM, Pavel Begunkov wrote: ...>> + if (WARN_ON_ONCE(seg_shift < NVME_CTRL_PAGE_SHIFT)) >> + return ERR_PTR(-EFAULT); > > This should be 'goto err;' instead of a direct return. If this ever > triggers, it leaks the map and already established sgt mapping. I can change it as I'm going to respin the series anyway, but it doesn't really matter here as it's a warning and shouldn't happen. -- Pavel Begunkov