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Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , linux-mm@kvack.org, linux-kernel@vger.kernel.org, bpf Subject: Re: [PATCH v2] mm/vma: keep the unlinked VMA off the file across unmap on mmap hook failure Message-ID: References: <20261007101800.58d50b1b20a10738e630bfd5@linux-foundation.org> <20261007194708.2009-1-okerixx@gmail.com> <271f7ba8-df38-4c8f-b59d-68b52ee998e9@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <271f7ba8-df38-4c8f-b59d-68b52ee998e9@linux.dev> X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: EEE1E80007 X-Rspam-User: X-Stat-Signature: qont3uds9m4st1rzmf1k8euswp74xtfg X-HE-Tag: 1791565469-481106 X-HE-Meta: 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 pSX21U3i UOFE6q6RIxunlqS4UCsn9VoSEawr/pzmKHzvHVImHhGcPoG3Jdddxm8ExwYrlaVRgEtIlUqB+45cScxGMg43am7q/2lVW0sar08JGZTa2kB6d1r6aAEfOq/1mJQ2gqjFcEGEgRUH0zbiD20qRqF3fTJcjZyoJ7aboRaMuAttwnanLar0barqToq8SPJ2EPBxqzMM5Uo+7j5B8KR/vRE1S7lpqKIRJPUBXrvT+KfJbrgKfSpwC41rrIAIlp1K/VxYj5pmsSivR9g7BDfPGiq6hYr/CrA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Oct 09, 2026 at 09:38:56AM -0700, Ihor Solodrai wrote: > On 2026-10-09 4:31 a.m., Lorenzo Stoakes (ARM) wrote: > > -cc slopper > > > > On Thu, Oct 08, 2026 at 02:48:07PM -0700, Ihor Solodrai wrote: > > > BPF CI caught this bug on linux-next as well: > > > https://github.com/kernel-patches/bpf/actions/runs/37736351874 > > > > Nice that it caught it! > > > > Is there a way to automatically notify patch author that when it happens? Does > > it bisect, etc. or just green/red? > > For linux-next it's just green/red now. That's still nice! We have something similar in mm. I think possibly inspired by you guys :) > > We've added it to have an "upstream merge will break bpf" signal, > because it happened regularly. > > For bpf list we run on every incoming patch, so regressions are detected > quickly. Not feasible to do that for *every* upstream patch, we'd need > much more compute. > > An auto-bisection is something I thought about, but never got to it. > These days with LLMs this may be easier to set up though. yeah that'd be awesome, but obviously a nice-to-have! -- Cheers, Lorenzo