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Thu, 01 Oct 2026 03:30:05 -0700 (PDT) Received: from spider.bream-herring.ts.net ([103.6.151.236]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2e300b62f4esm8664475ad.73.2026.10.01.03.30.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Oct 2026 03:30:04 -0700 (PDT) From: Matthias Goergens To: Jan Kara Cc: Hui Peng , Christian Brauner , Alexander Viro , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] isofs: bound empty directory blocks in isofs_read_level3_size() Date: Thu, 1 Oct 2026 18:30:00 +0800 Message-ID: <20261001103000.3408032-1-matthias.goergens@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: References: <20260919222553.3792320-1-benquike@gmail.com> <20260923175215.1577791-1-matthias.goergens@gmail.com> <20260924151356.3287733-1-matthias.goergens@gmail.com> <20260925043804.2091174-1-matthias.goergens@gmail.com> <20260926083517.556576-1-matthias.goergens@gmail.com> <20260930033940.175021-1-matthias.goergens@gmail.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Honza, > Right, that needs a bit more care but still, something like the attached > patch should work? Yes, it does. Testing the next-section link as "not yet set" instead of "i == 1" is what was missing from the first variant. I ran your patch on top of v1, built in userspace with ASan and UBSan, against 67 test images: empty blocks between and after the section records, three-section files, and the 100 bound from both sides. i_size, the recorded next section, the limit message and the file contents match v1 on every image, including the split-gap one your first variant read wrongly. No sanitizer reports. Reviewed-by: Matthias Goergens Tested-by: Matthias Goergens Thanks, Matthias