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Peter Anvin" , Linus Torvalds , Andy Lutomirski , Brian Gerst , Peter Zijlstra , Shung-Hsi Yu , Alexei Starovoitov Date: Fri, 06 Jun 2025 09:56:56 -0400 In-Reply-To: References: <20250127160709.80604-1-ubizjak@gmail.com> <20250127160709.80604-7-ubizjak@gmail.com> <02c00acd-9518-4371-be2c-eb63e5d11d9c@kernel.org> <9767d411-81dc-491b-b6da-419240065ffe@kernel.org> Autocrypt: addr=James.Bottomley@HansenPartnership.com; prefer-encrypt=mutual; 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8mT2Eh9SkH+YVOmaKsajgZgrBxA7fWmGoxXswEVxJIFj3vW7yNc0C5HaUdYa5iGOMs4kg2ht4s7yy7NRQuh7BifWjo6BQ6k4S1H+6axZucxhSV1L6zN9d+lr3Xo/vy1unzA== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.3 MIME-Version: 1.0 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: B15C914000C X-Stat-Signature: jzmoq1xdw5zd88ymfe4xjeyh99e4ume8 X-Rspam-User: X-HE-Tag: 1749218218-748337 X-HE-Meta: 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 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: On Fri, 2025-06-06 at 11:27 +0200, Uros Bizjak wrote: > On Fri, Jun 6, 2025 at 11:17=E2=80=AFAM Jiri Slaby > wrote: [...] > > Given this is the second time I hit a bug with this, perhaps > > introduce an EXPERIMENTAL CONFIG option, so that random users can > > simply disable it if an issue occurs? Without the need of patching > > random userspace and changing random kernel headers? >=20 > In both cases, the patch *exposed* a bug in a related utility > software, it is not that the patch itself is buggy. IMO, waving off > the issue by disabling the feature you just risk the bug in the > related software to hit even harder in some not too distant future. Given the severity of the problem absent tools updates the usual way of handling this is a (sometimes partial) revert for the estimated time to fix the tool chain followed by a resend. This is exactly what we did when an efivarfs bug fixe exposed a bug in the firmware update service: https://lore.kernel.org/all/ffd953c76d3a0bc0f88aeb319589632e8da032dc.camel@= HansenPartnership.com/ It only took about 3 months to get the update through the distros, what would the estimate for this be? Regards, James