From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7B4103DBD76; Fri, 14 Aug 2026 03:24:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786677881; cv=none; b=M5iVpB4PBhkFKS9126R0j9CNp8EQb2eq6x5/waU3H5EOPjWgCVnx6rkvsuFEE2sbW/wjSAPzg5D5mMgorR24vqKw7KJbEUyNfamxMzC8nQR+ktMC+69ZfwAubqEabi3XQm2QmQt9wrx+G3cLivDxL/Fd9PbHqpd8gFx11VOiRgI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786677881; c=relaxed/simple; bh=aoi6IyavqOU9QVEPrvI2km7eXyksyIhw5EMkwDhP07w=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=ElWnk2IbYZI5+GK/UllisfGu2UKyaPDwuuHvA9RviXpAbUx5A3KewTf0aQpWzksgEud/t4JB/rBk8zsUukjkrTxOBjkP3WklZlN6owtmM3G9U1Z6/OqD/OYzkeY+GXRHkNKhLL04TjakWL1BAtVmgCm1xrk0beoKmcd87zFLpcE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=K1VZMZmF; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="K1VZMZmF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2AF571F000E9; Fri, 14 Aug 2026 03:24:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786677880; bh=9SjwtDkWoR/1fXOJ47WM13v12u5kRwXbTWuhTE5xEyo=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=K1VZMZmFE1P2ar7GVsuIU7RIAtZhSg9rAVaUnfbHmF7iIVKKzhXd7mPffX42JCOpO X38CX24TIEAAszuThnvgJW4RobW/+DLr9Tw9JnjsoaV//r4OR6oxBYTiwcV0ACjTVL aHB0X8fJpi0fCxyqXFJxtkHjb24FUEyTsuurY+keBiEgf3K8SRwT8AD2+5b7cBQxWF jTZJstfCaD0BBhdUTJoP3hnxgXYGFi1cyzPjksOji+EuVh+5iZAACVFjLBp92gRO8Q mH51qXFxk1way3zrqV35VPoL0t4G5gtpS6hd0zga075FVZR5/KGbkbpiweE3wMPCLj 4iUFRRX33wPww== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id D0A9C3810900; Fri, 14 Aug 2026 03:23:55 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH v5 net] net: page_pool: fix UAF in __page_pool_release_netmem_dma on xa_cmpxchg race From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178667783439.3150297.17463702464769958998.git-patchwork-notify@kernel.org> Date: Fri, 14 Aug 2026 03:23:54 +0000 References: <20260807114830.344336-1-shaojijie@huawei.com> In-Reply-To: <20260807114830.344336-1-shaojijie@huawei.com> To: Jijie Shao Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org, hawk@kernel.org, ilias.apalodimas@linaro.org, almasrymina@google.com, toke@redhat.com, shenjian15@huawei.com, liuyonglong@huawei.com, chenhao418@huawei.com, yangshuaisong@h-partners.com, ningwei15@huawei.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Fri, 7 Aug 2026 19:48:30 +0800 you wrote: > This bug was discovered while testing the hns3 driver under channel > reconfiguration (`ethtool -L` / `ethtool -G`) with iperf3 traffic on > arm64. The race is intermittently triggered when page_pool_destroy() > runs page_pool_scrub() concurrently with page return via > page_pool_put_netmem() on a different CPU. A WARN in > page_pool_clear_pp_info() surfaced the dangling DMA index bits left > by the cmpxchg loser, which led to the investigation. > > [...] Here is the summary with links: - [v5,net] net: page_pool: fix UAF in __page_pool_release_netmem_dma on xa_cmpxchg race https://git.kernel.org/netdev/net/c/24ef02f934ee You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html