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Miller" , Jesper Dangaard Brouer , Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Andrew Lunn , Eric Dumazet , Paolo Abeni , Ilias Apalodimas , Simon Horman , Andrew Morton , Mina Almasry , Yonglong Liu , Yunsheng Lin , Pavel Begunkov , Matthew Wilcox , netdev@vger.kernel.org, bpf@vger.kernel.org, linux-rdma@vger.kernel.org, linux-mm@kvack.org, Qiuling Ren , Yuying Ma , gregkh@linuxfoundation.org, sashal@kernel.org Subject: Re: [PATCH net-next v9 2/2] page_pool: Track DMA-mapped pages and unmap them when destroying the pool Message-ID: <20250611131241.6ff7cf5d@kernel.org> In-Reply-To: References: <20250409-page-pool-track-dma-v9-0-6a9ef2e0cba8@redhat.com> <20250409-page-pool-track-dma-v9-2-6a9ef2e0cba8@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: CE2584000C X-Rspamd-Server: rspam07 X-Stat-Signature: y4h5arqk4kg1b7ssoupszb37oepfeqbz X-Rspam-User: X-HE-Tag: 1749672764-64445 X-HE-Meta: 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 tI1MxF+w gVoH6gkn5bN0Mu6xsNxIC/tT8gGqqmDDBG9NVdy0pD1MbBgg/RmQNAXBDjdXwWEZKt/6Cx21YLeKZUsg+aUyUIYpaJB1C5tc7zvJJOI0sEy1qxd+MCqqG+HwNS5wkBPiwle+nsRZy0iw+82IMYKs6SBi8tiYvppvGXFuIUa9gJhOXRwIkjBwqyNsPBpbf8uuvZSDvitjnTY9wZFCPnKR7ppM1m9xx0mHEFn6Inq6GN7tdYA/kQSqpZ6tWDih/zfhZl0Ff8kNWdH2i/B9Dtl4i35EZ9k+ccgVG0jLsLo/CsRr2RNdZayD8vJFwAuZv24dLlgro7DZXaYvpDkNmuOCIeL59lg3f0hqfb4HDIOMZ9LzTCgKAWcJiYpsEJhYlkHA1skfJ 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 Wed, 11 Jun 2025 09:35:45 -0700 Breno Leitao wrote: > On Wed, Apr 09, 2025 at 12:41:37PM +0200, Toke H=C3=B8iland-J=C3=B8rgense= n wrote: > > Fixes: ff7d6b27f894 ("page_pool: refurbish version of page_pool code") = =20 >=20 > Do you have plan to backport this fix to LTS kernels? I am getting some > of these crashes on older kernel, and I am curious if there are plans to > backport this to LTS kernels. I think it's worth disclosing that the crashes we see are in error recovery on unstable HW. My vote would be to keep this out of stable until it reaches at least one final release.