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b=ct2T4C8w0B4NvOUhuAHDjs6urnTBmSBma2hgKbEK6vMzu0BleolZEr8UYilUeTcpo cj6LeVtQws2ZNkAfkwi0RXGE8crK0CF8nyUA+ri30xkJM40i9rjErnYw5fW+XjXgc+ LrZoeTae6F0j+baG8DKdekLuwm5ojpVYfOW6r774y/BKWhXKFWZyUXzmubgcdZrl02 q5e6KpTldk63TEOLIcF7nyv/nBC7rmSlvFhKJ5uiKAE8IYWpPkBY5c/yaqqArUauHP p40OT8Rtqjq7gPyRMZSIch1RXfZDc1gI3uo3WTrAKZ+UKdQ9JVg6Yml4Q2TNpHE8/x XL3HvrZhi2IBw== Date: Sat, 3 Oct 2026 18:34:47 -0400 From: Sasha Levin To: "Lorenzo Stoakes (ARM)" Cc: rppt@kernel.org, peterz@infradead.org, akpm@linux-foundation.org, david@kernel.org, mingo@redhat.com, acme@kernel.org, namhyung@kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, regressions@lists.linux.dev, stable@vger.kernel.org, 4ncienth@gmail.com, alexander.motin@truenas.com, caleb.stjohn@truenas.com, ameer.hamza@truenas.com Subject: Re: [REGRESSION] secretmem: SIGBUS on memfd_secret() pages while perf record runs Message-ID: References: <20261002175651.811343-1-ameer.hamza@truenas.com> <2026-10-02-rc-reply-0003-re-secretmem-sigbus-perf@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 6447F40004 X-Stat-Signature: mkac6oa33z41dixoep1i3yzbskg6x5om X-Rspam-User: X-HE-Tag: 1791066898-188042 X-HE-Meta: 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 DArE0V7p QDqTuqK28cBy/xqwyTFT/6R+VXZkicNjfQT48JlfwMMH4wCJdaEBB7YwBHFucXy/pHZtaLJPwIbQi5jhMm8otTEMWlbSE871wyEh0Zb2PwAgEYX+lUzDDu7ongNQ2Us+ck4zQnsvQSa2uMHIWjKBDWaFDt6fO84+bwmLG2Q7uLzY51VE/MpoIyTgRCxqcHx/FkJDvYTPWQ46kxlezlr27DmN/CK/HYyi5NK33gHX4mdBKP9GO6CWaOnOkFdOzpiOhHbbes9RaCSJAfLq+Pi0jC6HFp8faPChFzSZCTi7hQXPjSTw= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sat, Oct 03, 2026 at 05:23:53PM +0100, Lorenzo Stoakes (ARM) wrote: >On Sat, Oct 03, 2026 at 10:30:10AM -0400, Sasha Levin wrote: >> On Sat, Oct 03, 2026 at 10:18:34AM +0100, Lorenzo Stoakes (ARM) wrote: > >> > It was sent late on Friday in a week that I was ill and it's Saturday >> > pre-LPC, so that's hardly a timeframe that I could reasonably have replied. >> >> Keep in mind that our release cycles are fairly short, so this shouldn't be too >> big of a deal? > >I mean the same argument could be made both ways :) > >> >> We will generally go for the safe option of dropping a commit that introduces a >> regression as it's fairly easy to queue it back up very soon after a >> diagnosis/fix shows up. > >I think we'll have to agree to disagree about what was safe in this situation! Happy to chat about it at LPC. Our reasoning is that users are better off with a regression they are aware of, instead of getting surprised every time they upgrade. I can see the other side of this, and I think we can do some work to accomodate this type of preferences from subsystems/authors. -- Thanks, Sasha