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 E30C1262FF8; Fri, 5 Jun 2026 15:30:07 +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=1780673408; cv=none; b=jGnDch5B/kJrIDJIdsVic0jZfZddUT5k4/7z+VbWdnbkAchWMQwTGZh+hYW0NH4o3DJ6KBIuCpDL0L+7fMfL4km+Fy9djVB+U/UwVNEfFFi4g2iT5Vo8ywgYiZ7aiwQVZQAC7oezb7iwCU9VKdk2WI5/YH4RBuJA/V4Cu56l5Q0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780673408; c=relaxed/simple; bh=zMgRSnvJOko7Z8pAG1TnHG0nOb6lLyPQqMzGvtSoFzA=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=PON3Wuo8wShsdTHcIMjMJ0PRdLgm5UJRTslLu5FPgR0SB9y2I2iiBS+bkT3saAVzCBVrbCKQp+ZFdHuOLTcDXTVmSbkit+Wy6RFReUUa38x/4JmgBaCGjjtbQHAFgmNFj+6TYG0J3J5fAFR6qtrepyQh1A+LolyZ3Tsu0SytJn0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RayKJ7nc; 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="RayKJ7nc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 42C001F00893; Fri, 5 Jun 2026 15:30:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780673407; bh=1BFFFgB57ZAob11PrIhvgonvaYPbDjOxXtuYXVUomG0=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=RayKJ7ncq0sZEb9vdqzRVX7YDpHvVxSzRbkdFFpFXx+JmNyRvyody6M/TZBC+J1mC aijEDSFOVz044vXnDL+FBwplQJdbIFbUpu/BmIKdN10yjwCnxeqA3tttPoUnDrCfXj jJ77iJAoRNuPuAW5vKVhA6bptbyqojfT4V6HHh7zbnAH5oeRGBECqR9A8H+BWuiNEy xndf4zIX/VXugdxNVUP/9oD1IQfp6KuVrUa/LGQ+/TVcncmYM63Jcd3akd8jng6r8x 16RFTi1oRG6rL/FWWoe+DWiKMkGU1UMQ8HFvlAKpM2e4qVOhrcaGRY+GkrU8dwNl9q jRADb53t0lpNg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id D0AF53930BA5; Fri, 5 Jun 2026 15:30:08 +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 bpf-next] bpf: Replace scratch PTE atomically when allocating arena pages From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178067340741.3804693.1794735582974531631.git-patchwork-notify@kernel.org> Date: Fri, 05 Jun 2026 15:30:07 +0000 References: <20260601183728.1800490-1-tj@kernel.org> In-Reply-To: <20260601183728.1800490-1-tj@kernel.org> To: Tejun Heo Cc: void@manifault.com, arighi@nvidia.com, changwoo@igalia.com, ast@kernel.org, andrii@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, memxor@gmail.com, peterz@infradead.org, catalin.marinas@arm.com, will@kernel.org, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, akpm@linux-foundation.org, david@kernel.org, rppt@kernel.org, emil@etsalapatis.com, sched-ext@lists.linux.dev, bpf@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Hello: This patch was applied to bpf/bpf-next.git (master) by Alexei Starovoitov : On Mon, 1 Jun 2026 08:37:28 -1000 you wrote: > apply_range_set_cb() maps the pages for a new arena allocation and returned > -EBUSY when the target PTE was already populated. Kernel-fault recovery > leaves the per-arena scratch page in unallocated arena PTEs, so a later > bpf_arena_alloc_pages() over such a page hits that -EBUSY, and every > subsequent allocation of it fails the same way. Allocation must install the > real page over scratch instead. > > [...] Here is the summary with links: - [bpf-next] bpf: Replace scratch PTE atomically when allocating arena pages https://git.kernel.org/bpf/bpf-next/c/f64c723741c9 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html