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Mon, 6 Oct 2025 20:34:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1759782881; bh=c3t15lOefwVAAOuvSSShpCGZ3VoHfG+ZXf5muYks8Ao=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=QZBtdUVaB/vr8yjrPFPdFk/BaAjok3QsdyhQOTFxmddT51D5FqoqKlQHNwJQeoPo8 Uxo+h2WQS32HlsrrxedD/xaNoFFHq8tPMT8O27UWeZIRKlydjm/mNR6ooRuZOKjVc0 idYxTx5Ofo7bXJ1h3Qf4+6jf6TkgbHGB9FQHGx43kGV0FpuDU4SIlkR6s5cnmEglYn O5g0TbG6DJ3XecHcx/44NQO+8nk3gtFwA2elL1Gu9pIa+DYQ3Wv8H6+4K6aItrOBQs 4C4a1kvpqssXWGwUbrF56Dk5Oo6AXOFnBkOyKcWOjJ1iXIshqempi9MG36WDvJ5Co9 /iku2fzIT/wLg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 70CA039D0C1A; Mon, 6 Oct 2025 20:34:32 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v2] page_pool: Fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches From: patchwork-bot+netdevbpf@kernel.org Message-Id: <175978287125.1522677.13468458175773865166.git-patchwork-notify@kernel.org> Date: Mon, 06 Oct 2025 20:34:31 +0000 References: <20250930114331.675412-1-toke@redhat.com> In-Reply-To: <20250930114331.675412-1-toke@redhat.com> To: =?utf-8?b?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2VuIDx0b2tlQHJlZGhhdC5jb20+?=@aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org Cc: akpm@linux-foundation.org, david@redhat.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, hawk@kernel.org, ilias.apalodimas@linaro.org, kuba@kernel.org, almasrymina@google.com, stable@vger.kernel.org, deller@gmx.de, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, horms@kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org X-Rspam-User: X-Rspamd-Queue-Id: 69BC316000C X-Rspamd-Server: rspam03 X-Stat-Signature: 1xrezznfpwj6bezz18osms4nndmtj4zu X-HE-Tag: 1759782883-238594 X-HE-Meta: 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 rgfp4/HG 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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: Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Tue, 30 Sep 2025 13:43:29 +0200 you wrote: > Helge reported that the introduction of PP_MAGIC_MASK let to crashes on > boot on his 32-bit parisc machine. The cause of this is the mask is set > too wide, so the page_pool_page_is_pp() incurs false positives which > crashes the machine. > > Just disabling the check in page_pool_is_pp() will lead to the page_pool > code itself malfunctioning; so instead of doing this, this patch changes > the define for PP_DMA_INDEX_BITS to avoid mistaking arbitrary kernel > pointers for page_pool-tagged pages. > > [...] Here is the summary with links: - [net,v2] page_pool: Fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches https://git.kernel.org/netdev/net/c/95920c2ed02b You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html