From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 740292376E6 for ; Fri, 11 Apr 2025 17:36:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744393007; cv=none; b=jJjdZrkZvq2Cz9GsEQMO3RiGjXC264VACf75plivPnDVZU5Kx1xFrr1ANVDrdc/HA4MRrpJO6tsXJLJLzROoqJ3S6ZBWGZn2cElxMY844k2yx9Dsdu2dGHutHuOKKlfDrHdmLjnQZO2FgJn1p6fu/53mJ0nkuUtaVJL6IUmrHd8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744393007; c=relaxed/simple; bh=1lQxSbJgiUUVShWb8Ta+dKxN/+mDdM8UDP+snNJtDwg=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=U5tehyEhzW3c7bYeCZbp+YsYiCMUz+0Z63VFNCZu8Vmy+aVsrgtzSL1Y1VWlCGlFTqVB1Dx838pliB2+4AQtjAGHfgx9yuTt1MsLV24DkyUznRx3dTM0rvXFZelxleECVhUMCJy1m+PFLdb3xX+Db9lH9CJwsNzavLoNIP5WI9o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GOQPGZHZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GOQPGZHZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB2ACC4CEE2; Fri, 11 Apr 2025 17:36:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744393006; bh=1lQxSbJgiUUVShWb8Ta+dKxN/+mDdM8UDP+snNJtDwg=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=GOQPGZHZbpAcEzI6/MjN2tj5LUgjgu/bn8bl1Wsd1llBHAksRkHSUXdZpbOdQQBgY Zy/ZUIFWjzdAKX+xImPeixuKVwe+VNEVNsC7Ps+NROTHnzb+bl5elTFLLZn8atJT2N VYCdFNKje0urmupSStGMgZyL4olbJZiQ8is8Rwn5ZMfhmzii9OPxZcf+OxqoVcMx0E UgRYKhT0+rddQqq46DeYE0VZFO0T6+O6XDgxTzwnfp0eAZgZ3Pim+DU8G3k5qdfRlt +l5IurTTMp7DMUsbJ0Y4nQJYGytycCC27Ij3CyknAdJtxrXh2ERflm5glt5xOOdsUs QpUt/mcMnK++A== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id ADD8E38111E2; Fri, 11 Apr 2025 17:37:25 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf v1] bpf: Convert ringbuf.c to rqspinlock From: patchwork-bot+netdevbpf@kernel.org Message-Id: <174439304452.326101.13065462047396025802.git-patchwork-notify@kernel.org> Date: Fri, 11 Apr 2025 17:37:24 +0000 References: <20250411101759.4061366-1-memxor@gmail.com> In-Reply-To: <20250411101759.4061366-1-memxor@gmail.com> To: Kumar Kartikeya Dwivedi Cc: bpf@vger.kernel.org, syzbot+850aaf14624dc0c6d366@syzkaller.appspotmail.com, ast@kernel.org, andrii@kernel.org, daniel@iogearbox.net, martin.lau@kernel.org, eddyz87@gmail.com, kkd@meta.com, kernel-team@meta.com Hello: This patch was applied to bpf/bpf.git (master) by Alexei Starovoitov : On Fri, 11 Apr 2025 03:17:59 -0700 you wrote: > Convert the raw spinlock used by BPF ringbuf to rqspinlock. Currently, > we have an open syzbot report of a potential deadlock. In addition, the > ringbuf can fail to reserve spuriously under contention from NMI > context. > > It is potentially attractive to enable unconstrained usage (incl. NMIs) > while ensuring no deadlocks manifest at runtime, perform the conversion > to rqspinlock to achieve this. > > [...] Here is the summary with links: - [bpf,v1] bpf: Convert ringbuf.c to rqspinlock https://git.kernel.org/bpf/bpf/c/0b51f0ac3dc5 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html