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Tue, 07 Jul 2026 18:13:45 -0700 (PDT) Date: Wed, 08 Jul 2026 10:13:42 +0900 Message-ID: From: Hajime Tazaki To: akpm@linux-foundation.org Cc: liam@infradead.org, ljs@kernel.org, vbabka@kernel.org, jannh@google.com, pfalcato@suse.de, linux-mm@kvack.org, geert@linux-m68k.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] mm: nommu: fix the error path when vma_iter_prealloc() fails In-Reply-To: <20260707173910.928c74a7e4dc8a1fdfddae3d@linux-foundation.org> References: <20260707235137.498738-1-thehajime@gmail.com> <20260707173910.928c74a7e4dc8a1fdfddae3d@linux-foundation.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/26.3 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 4EB71A0004 X-Stat-Signature: 9mwzhdjmc5omstordsna3thhzgauwtc1 X-HE-Tag: 1783473227-389292 X-HE-Meta: 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 QRrgD/H9 nHQLJyOguKkoZ9h8lqksIzcOzy61MPbMgdMMRZcO12JA59+YQa9+jdTe0sjzmd3u0kR06F6idL06HD7kAboiMu7YuHcNGtitfp33K9a7LsV/Jdo6d0YkVvPCjIs7kBRHTNiDIP+nEjuuj7NJAvyUMXBh4xunSQQRwXTbLS3Otj2uA5EXHI9/i+p5lAVxq5VemmpsiP7Z4VpPM7V3wdb513d2a9eNdBf5qoCp7HqIbvskngHO/YxyyRoPzglYcr2o3Z9sZgE+f6bHWQeTQsGPg6nj5vg5e9kkPyD+Ya7v/BYy2lIe626jSJk60OcaWhIsarRkeY+YGzTVuUIEBwUtQJqE/9H8PQW8T/nnFhRvkYHKjcE/1ZPhQAcyJmfgFAPLEaguEFHNSjVoc1rfJQiBYQ69iWiW2BxuIuxu/o7Yv3Tn0r8bgdbk/TedwVEDuJN6XPmdq7dl23adG5mvgXssY9XFYZZqk3v7PePrl2E3zl8yf2cFdLNPiHiyO0jBAawQTvj1bv3N7eoSfm9s7bc/RyBUCUJQi/nf4WfiGar5EGENe3EZEzuROhMrQPw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 08 Jul 2026 09:39:10 +0900, Andrew Morton wrote: > > Those issues are discovered by Sashiko, linked below. > > Thanks. Now I'm wondering if you regret opening this can of worms ;) > > https://sashiko.dev/#/patchset/20260707235137.498738-1-thehajime@gmail.com indeed, this is why I wished to do it locally to avoid this noise (but failed/struggled to prepare the local sashiko due to lack of subscription for me..). I'm sorry for the noise but this is what I wanted to know so, no problem for me. > afaict, all these issues pertain to failures from vma_iter_prealloc(). yes, will look into detail and get you back with another spin. -- Hajime