From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (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 123ED383 for ; Sat, 16 Nov 2024 04:04:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731729897; cv=none; b=ChD3CZz7BpJrISX3tYmi1D842H67hyStT8PTiPQx6V7WMwQ/EB6EIb4CMw9MwVq0InA9Dbmy/UlBA5SVZLXS8P0Fqg0OvYa6i4crzWBjf7FAISPKBwd+ejMeZl64b2p6oKqHHcgewXKZBpZaGfvmQuHIjKx8vg/cEN8JE8/xsWs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731729897; c=relaxed/simple; bh=UXqUZQxJJQbOYvIO4tCPTMd80dx0liFvEPAYeVDNHR4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=aU5XWCNKlPMfA2LLfnBshM833D9quCxScLAMldho3gUQVFwNYMVupLYL08iynev/HcqmUoqeOkU/d4fvQSHGAKX4NNM/LKLmFOoNgDsFFZG550aSoJNLTeBdjBauV7Pa2XC9fb/HRnpl7t4mk6fGYvN3582KkPd+PKAhX5ds0e4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=YccUeGYZ; arc=none smtp.client-ip=209.85.214.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="YccUeGYZ" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-21116b187c4so1272105ad.3 for ; Fri, 15 Nov 2024 20:04:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1731729894; x=1732334694; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=g/+zvJLSszxPTPcx6CDzWzGc29IlCznPJ3Jntw0Pz4A=; b=YccUeGYZqqXftuIELst9qPN2aHMhTWVTzWXao0btghfOq0nv4cj/Yo7oHFHKj9uFES 86gnAVx4YWzYKTA048AWPM0Z63JqSvXHb2RCFmMgpKwgly2XemxG4EfGJWOkTgTHNWL7 +6o6Z4ZinIPPpqOBQCgMLTAMfwlW69wzT6+dw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731729894; x=1732334694; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=g/+zvJLSszxPTPcx6CDzWzGc29IlCznPJ3Jntw0Pz4A=; b=rGEjU8wZ8QOdUSmRLknmFxd4RG7G1Vlp3xrHaykNSlwW3nYxXwmKujGd2/fyAjxONS aPtSDeuWV53VL5SnnC/KVcN1MfXJzariOKJbLWN4Rd3KD5r2D/UdbnpLts50JliQKZgx g690VUP8VCOsWu3EbyUojMsGOlPA/SGpPClBmGdW2IQUbzcLn/R3jcnGaqqoz2IhKFDz xg6jlv3oOF8g0Z0xoCTo8Qrztm6M3QaA7Q1gALOkjH4zjgz2OpTtaL9OWOAhCBoOudy2 dG2Th3FvzAKH6HZhTp9p4Q4KtzUzmXGbyaWPt9p0T9KifzXd5EeZd/vpPiWTm/s7CGQL nvhw== X-Forwarded-Encrypted: i=1; AJvYcCU4JUdER4+AQjzK5l6u/c1jSiuUxCKrXV4eJUxcpBhHAxGdxItx5KmVqq8l+hah3rblY299dDg=@vger.kernel.org X-Gm-Message-State: AOJu0YzNct6nm0+wVJDQfHUKdQuyi7A68++LRdVj1nk7pciAkru5KZXp gZrbHZvpECgxz9rbfit596qIVe0UkDGryfrKfEDdEe2suWomnhXgv/FMMc/oNg== X-Google-Smtp-Source: AGHT+IHZK1G9tdxC6KPp3zQlMLXKqWEdBTvnKv8UpdzXfkJnpXftAR9nvrS4S+Qh4fkrjl0qq88Cng== X-Received: by 2002:a17:902:dacd:b0:20c:a8cf:fa19 with SMTP id d9443c01a7336-211d0d72accmr80564985ad.22.1731729894486; Fri, 15 Nov 2024 20:04:54 -0800 (PST) Received: from google.com ([2401:fa00:8f:203:142f:6cb4:e895:7127]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-211d0ec7dadsm20016645ad.71.2024.11.15.20.04.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Nov 2024 20:04:54 -0800 (PST) Date: Sat, 16 Nov 2024 13:04:50 +0900 From: Sergey Senozhatsky To: Jan Kara Cc: Sergey Senozhatsky , stable@vger.kernel.org, linux-kernel@vger.kernel.org, kernel test robot Subject: Re: [PATCHv2 5.15] udf: Allocate name buffer in directory iterator on heap Message-ID: <20241116040450.GN1458936@google.com> References: <20241115060859.2453211-1-senozhatsky@chromium.org> <20241115120751.fnsvzo4453ab7hnt@quack3> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241115120751.fnsvzo4453ab7hnt@quack3> On (24/11/15 13:07), Jan Kara wrote: > On Fri 15-11-24 15:08:48, Sergey Senozhatsky wrote: > > From: Jan Kara > > > > [ Upstream commit 0aba4860b0d0216a1a300484ff536171894d49d8 ] > > > > Currently we allocate name buffer in directory iterators (struct > > udf_fileident_iter) on stack. These structures are relatively large > > (some 360 bytes on 64-bit architectures). For udf_rename() which needs > > to keep three of these structures in parallel the stack usage becomes > > rather heavy - 1536 bytes in total. Allocate the name buffer in the > > iterator from heap to avoid excessive stack usage. > > > > Link: https://lore.kernel.org/all/202212200558.lK9x1KW0-lkp@intel.com > > Reported-by: kernel test robot > > Signed-off-by: Jan Kara > > [ senozhatsky: explicitly include slab.h to address build > > failure reported by sashal@ ] > > Signed-off-by: Sergey Senozhatsky > > Mauke beat you to this, Greg already queued up his patches :) Story of my life :) > [1] https://lore.kernel.org/all/20241114212657.306989-1-hauke@hauke-m.de Awesome, thanks everyone!