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McKenney" Cc: Nathan Chancellor , kernel test robot , Dominique Martinet via B4 Relay , "Matthew Wilcox (Oracle)" , Christian Brauner , David Howells , Alexander Viro , Andrew Morton , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Maximilian Bosch , Ryan Lahfa , Christian Theune , Arnout Engelen , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 1/2] iov_iter: iterate_folioq: fix handling of offset >= folio size Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: D9031180006 X-Stat-Signature: rf3i6xhciewkw9j717aqiytcmob8jd9y X-Rspam-User: X-HE-Tag: 1755134098-182847 X-HE-Meta: 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 63ayJh0w Psxf96J15ilwBCJx3Wi9auCK+yhnZnDcMrEJgzC7dh39NYFwUSMCiKG6V5/ocZDbYazqvSO6YKK58ewOcguH+ZBqiY79eeiir5ODZzhAflzWGdLNvSyDuyOPut2eufGBcomgj12tFkyZtMWSlzrkOT57SLISNac5B6Ru03Q5L8Q01gZXckQ3AzAz2RpzeumMfiGhV7ZhhPoi8cAVKSzO8TB35PjVVDLkmYAvIj+K7L9xUvaYbG4W+UhvmDsFSFKy1idmchm3+zCRtu8rQypw9ivAAZ+lWzX2B8rMYZVLb8dJtP9QhC8INlEbGlIBj/rAzJH4yF0RdlQjLLdZ8RR3xxfouiBF3VUKCbTs5jH78+74v4Q1ZErIpGXb8/TfNJ14sa1JrPHJ5nnwi86yUyDRzXdvXFGXbvWJr4eSzyaHEpkNiFH4= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Andy Shevchenko wrote on Wed, Aug 13, 2025 at 04:52:39PM +0300: > > I actually test with W=1 too, but somehow this warning doesn't show up > > in my build, I'm not quite sure why :/ > > (even if I try clang like the test robot... But there's plenty of > > other warnings all around everywhere else, so I agree this is all way > > too manual) > > Depends on your config, last few releases I was specifically targetting x86 > defconfigs (32- and 64-bit) to be build with `make W=1`. There are a couple of > changes that are still pending, but otherwise it builds with GCC and clang. I meant it the other way around: the warning isn't showing up on master + these patches for my config. But now I double-checked, 'CC=clang make W=1' doesn't actually use clang, I should have tried 'make CC=clang W=1'... And, yeah, it just doesn't show up with gcc so I'll know it's better to check both compilers... Paul E. McKenney wrote on Wed, Aug 13, 2025 at 04:04:19PM -0700: > > I hope this to happen sooner as it broke my builds too (I always do now `make W=1` > > and suggest all developers should follow). > > This build failure is showing up in my testing as well. > > In the service of preventing bisection issues, would it be possible to > fold the fix into the original patch? Andrew just picked v3 up, so there won't be any such problem, and -next will stop failing after today's update -- Dominique Martinet | Asmadeus