From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f179.google.com (mail-il1-f179.google.com [209.85.166.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 426AD20D4FE for ; Tue, 18 Mar 2025 13:57:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.179 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742306276; cv=none; b=s0v9PXo7ddePzJdpVaL77ounqZzBlkPWxhXoUQ2BQfT/48y1b3HLwHwlVNkNdiBvwJLHEpqAJDcb8Jdl4sXER+yYYZUsFyGQUZpiWMzIP8mtsS8y/zD6kt3sb4jlH283cDr9GspHjN9fGoE970zqdfmw5z1l75m+eAAMS4Pb0co= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742306276; c=relaxed/simple; bh=xb9WdjxEexZgfM3k9ipu2MTXGp6eGcSVjAkjuBZVpDs=; h=From:To:Cc:In-Reply-To:References:Subject:Message-Id:Date: MIME-Version:Content-Type; b=hGSkvnCHAXHlSxXvGTMJv4gDoNlSTBdr1HFhb+/5EIcExtr4QCXYObru3uYp4ZAQADBFxuXxaiYRfeOm0lPoH2Bi1tu7482fiu8sgPy5S1A4y/RQOR1Uy5ojA+dNXeRJWSg/r3KWLo78SelCWnzUntojhP4kCXkfzTu4knsTZQo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b=Dh4QxxHI; arc=none smtp.client-ip=209.85.166.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b="Dh4QxxHI" Received: by mail-il1-f179.google.com with SMTP id e9e14a558f8ab-3d43c972616so17829205ab.0 for ; Tue, 18 Mar 2025 06:57:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1742306269; x=1742911069; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=kvOvbmR6NQGDjpnSfgt+13JThVeAb9e7iy1G9pfLmLg=; b=Dh4QxxHI90PZmq3mqp1LNPe1F/TjnZyFMsOPKlUGfHl5YkXCWkytWN1GIxq/5az46T yhLuvnqC+D+UfXEvHmP9jegLIVESPWs6xVRb4dyedPagQUViZhX5izUHn8UiYBANkMCZ jvqYM4tL8IVefYwMdH+if4xxjRDpiJ3mr8pHhICOvZ3Hm5Bpg4KoOBIK4zg0sLtjC54B 8NP0AKZ7OS9cpEdHkYF4uHu+3Ijk8k8GJFUWvIGEzI5Tg6+W/wwjlhtMcAONDG+miw+x YqdaznaZydvctcrQAWZy+Q8siR6iSeNHlOvqD9VCtlq6PxCgObspDNcinjD0FxejXS6H qAvQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742306269; x=1742911069; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=kvOvbmR6NQGDjpnSfgt+13JThVeAb9e7iy1G9pfLmLg=; b=OQnPvGoKOVnVdut/1UxuMMG0EvGACnD5j38ZOiLPB4cjlyUR9ob0m+2IDcBnCKuTRR 4/Fu1fEHF+AGJ1ZEXIawUSUmEXFPF/AOxUoi99425FLUeqrkE3Pzm076xpSLYbO752E9 k8SqCmXA36p1efdwc+ntpP9dVNTdYBZ7VSDujbJIiqMh+rAlg0iPE/Yye6aD6sU1uWfw Kbyhw/Yl4FPGe9RbP3wYwOH88pPlbp5/VGToRw0/1TquNEQEUTqDxt9nobCK3lOTyuTn OkLNLIU22RIW+hmT/nPQsjprZFE0NbzIss0K6aV7OhVWXBcPSyz07D6Els0zOGFQlsDb QqBw== X-Forwarded-Encrypted: i=1; AJvYcCVlbbJGVURuaT9NKd6prhOfkH2M952PPcLG7ORoggS7V5/jMFYct9uGAVQEF+wePafeR7GdmkPHmqJI9C4=@vger.kernel.org X-Gm-Message-State: AOJu0YxuZ04i38NoQy4su6b3RDrgDVqoPg4OhJ3urNKsy5yLzJJ1Hhap /KrMnXDTDbjIrM5Jo37rB8sW66qT2tZdtca3fnYrb+fp6hIHk0z3fluh+efclVE= X-Gm-Gg: ASbGnct2jLQY2u6nje1PLCrjGwvushw0x3tjuGvu8eDitaa25Ni1pPGHgBDYR93bRu/ VW5/tkn4PkUSKbh3LXQlKB2eQ8dKiUonrahNipRH7hWga6KmXmot/LJ6rTIp5bU+pHL1yikWWGS flN15PwU5w34HgXNsfmLQA7FzjeJy7zsDDL2tOnKUcdo+zn22CKTnHcimFlfvOutfzfN70VQM/D tUmaT7XHJAgadckWXRiPPDaahZMMhpWRqPcH6j83n43fxqWMSoe9a1IflQWKkKv/0epELTp7Pd7 OlkeDM4j7RJFHfUrV/DARBINMHFH0fI0i9qf X-Google-Smtp-Source: AGHT+IHSTo4Yxz6Emmj8UDXdqlLkVwyU5EQE7l7BjFEzrVx83+66mTGmPpOgNmV8CQE+A9DapoJXMw== X-Received: by 2002:a92:d14d:0:b0:3d1:9bca:cf28 with SMTP id e9e14a558f8ab-3d57c4330femr28485225ab.8.1742306269307; Tue, 18 Mar 2025 06:57:49 -0700 (PDT) Received: from [127.0.0.1] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4f2638147e4sm2747321173.115.2025.03.18.06.57.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Mar 2025 06:57:48 -0700 (PDT) From: Jens Axboe To: =?utf-8?q?Thomas_Hellstr=C3=B6m?= Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Ming Lei In-Reply-To: <20250318095548.5187-1-thomas.hellstrom@linux.intel.com> References: <20250318095548.5187-1-thomas.hellstrom@linux.intel.com> Subject: Re: [PATCH v2] block: Make request_queue lockdep splats show up earlier Message-Id: <174230626857.125116.10538016841387488371.b4-ty@kernel.dk> Date: Tue, 18 Mar 2025 07:57:48 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Mailer: b4 0.14.3-dev-7b9b9 On Tue, 18 Mar 2025 10:55:48 +0100, Thomas Hellström wrote: > In recent kernels, there are lockdep splats around the > struct request_queue::io_lockdep_map, similar to [1], but they > typically don't show up until reclaim with writeback happens. > > Having multiple kernel versions released with a known risc of kernel > deadlock during reclaim writeback should IMHO be addressed and > backported to -stable with the highest priority. > > [...] Applied, thanks! [1/1] block: Make request_queue lockdep splats show up earlier commit: ffa1e7ada456087c2402b37cd6b2863ced29aff0 Best regards, -- Jens Axboe