From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout.web.de (mout.web.de [212.227.17.11]) (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 723241A071F for ; Tue, 1 Oct 2024 10:42:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.17.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727779366; cv=none; b=B8LQ0K3oGP5B9TFpOzMl7PvKXiTxbuyndv6OTO1klOoE0evj/nQBf/3t6+ADEnwAHrrMzhDSDAa84UWTzhAV2D0NScltsIl0qaoBV7P12UmL/IXNcFQXbsU3aQXJNcmOzEqnM7GoZl4R8jkwsFwJlWU4VRb5ab9HfYsOWWAxkXg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727779366; c=relaxed/simple; bh=nKxeZAW61llLUgTTk+EqQlCkMBf2Rfu2A0YoNb970Eo=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=T8xPkcBBSTTgaxfCzIrPVLBb8dTy1WIyFGApzGPI7NTz43TQOi04GFBivYrHGva101x7rz4rxlAmqF0jQi0j4mzA6V7kPSmusKn3E9wJrLkOdrFZf0hoKsk5zO5TqyKQqos3y1My6LAK7aooN2flkVonQzBt7iHs0QK+LN9VYyQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=web.de; spf=pass smtp.mailfrom=web.de; dkim=pass (2048-bit key) header.d=web.de header.i=spasswolf@web.de header.b=u5NwNnAu; arc=none smtp.client-ip=212.227.17.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=web.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=web.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=web.de header.i=spasswolf@web.de header.b="u5NwNnAu" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=web.de; s=s29768273; t=1727779354; x=1728384154; i=spasswolf@web.de; bh=nKxeZAW61llLUgTTk+EqQlCkMBf2Rfu2A0YoNb970Eo=; h=X-UI-Sender-Class:Message-ID:Subject:From:To:Cc:Date:In-Reply-To: References:Content-Type:MIME-Version:Content-Transfer-Encoding:cc: content-transfer-encoding:content-type:date:from:message-id: mime-version:reply-to:subject:to; b=u5NwNnAurXP9xuTp68I5E8JoY/C/Ac00FLrDMtjWVX0+knDpHn3BjSXjcbQSH9ct Y2PcpIRSVCwl2DouEL3kaDwrMx4FzIHca+6rzhJlbpl7vquU9/pWKO6dxNAUJDH5z vipoTCY4Ox1DUUelUAJ3z8R4mMIshcQjqJ427ptGg3Sf4sIVqim2mDhz0+3hQ1wZ6 YtUoBZ5S5h8A28Y7YE8CG/kc+JdYpzBSU8JIqpazMxrU76ULWX0sbe2AvN66YcUxE AhmkqNDGfQwXJ9CXZuGpAjt9cTh/ERrcQwZCFtzkFXe9jLN+mDJQjOL893XarRIFj eqCp5d1u1MC4zQXlQw== X-UI-Sender-Class: 814a7b36-bfc1-4dae-8640-3722d8ec6cd6 Received: from [192.168.0.101] ([84.119.92.193]) by smtp.web.de (mrweb105 [213.165.67.124]) with ESMTPSA (Nemesis) id 1N7gXQ-1rqqhU0EJW-017Y55; Tue, 01 Oct 2024 12:42:34 +0200 Message-ID: <2933d931be9904d2e63cb419d190d2b3d17ff27b.camel@web.de> Subject: Re: [PATCH v8 14/21] mm/mmap: Avoid zeroing vma tree in mmap_region() From: Bert Karwatzki To: Lorenzo Stoakes Cc: "Liam R . Howlett" , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, spasswolf@web.de Date: Tue, 01 Oct 2024 12:42:33 +0200 In-Reply-To: References: <2f1a5621-1c3b-4c2e-97c4-86e36bc47788@lucifer.local> <9a97af91ba1925629d5c7fa1f1aec34f92123a15.camel@web.de> <32226c4d16d2a17d8dbdbbd007d583a2a6a2663c.camel@web.de> <386f485c-5dec-4c7c-81f8-a23aa98a72e7@lucifer.local> <0e9eb75f6342a7aaa1fd0eee3dcbbb15fb1f6539.camel@web.de> <81235f36-7266-4ce0-8175-7c4d0e6ae3de@lucifer.local> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.54.0-1+b1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:tZb+NWKziPJmZbyL0E6utr9R/zY6piDjZEeAQuuezbwxI4u2R8d R7AyElP4hoHpLAqHJTkXxZkG9dsgy3DahFWHQPRyvnk2lg4Fx0yPkEWYTDPIDGSVvr5IX66 B3I+4oZO4rLPsvtMglBSNoeOSC0iJUsA2Da4qZTGfKBSsD3B6uccrEhSjoo954i+IfxjDTT ioEkRJSHSrrkbjKgpEWHg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:oj6RZCMAgOs=;PzrhoXs/ohZLHXdAoaMgzH1inMj Q1buLZD/q/MNJseZcXQo2gMwydsjH+iyByTrvWm7HAAo5DAmn9qXgY24kw5TAj24+8QNnyNUy RA3GVtEYFqsxToOkXI2qlmZLRoJHtJ8O3osMmEaELTulci2/eaXsZ0hXtJBYyDMyEJOVn90QI +23huaLV0ScIXb0XjDUcMpwufBCIP+g16KMzu9F9kaQCYnJkvITPQX/kUhfwCcdR98iKwkVhz 8/+BLhfAY31av6j8vi+yVxJ/yuVsyiRtpriPhCPsquYpcMf3mpEBAGmADXAVfapbM9813NLem T5dJGIEkLgvsueg5L3hp+g5btphyeEN/nIC4/M+3VNfC7EOfaPNxfiMLGUv9T46ehIkpFaEuG aR2VS+2PsBNqjkDpZVbWZen2bs2pVb3cBHm8x7u3jbsu7ixoJX07BZrk6FKySW/25LgWG/cC2 1FBuKHwrMClU3+6bT3bKfBr6oFs9CaMIw538Bx7cYVdRdgWAsJObgf0g6Wsx+enbYq4iUaNeE Ysf3OCpbaAdfXpeDNhf2GLFIoUGBL+AbG9Ap1K8irv4m2uNrxl6XnOelChaELQe0736tCntfb GFLwy4AFyE839JL8IibsBxsQfm5LBbvzrzp0QMZczqOvjfrK7mSqxUNXLHBTAIvpIaKXPjf9j to70fj7BQhiXGlA081kZzK7RZfGUcV9Os05s9FHGfOFqflIlxKeO7hkgYGFUBgy1AMfIiX25k +nIiR2SDPofEnL/Zozob5eg5tlIB2fhvoDP7t4GXWSM6fY7apz8gl335+K0mArWoZ/BQssG73 leF4o6bmy/c37B5l3Vir3TMQ== Am Dienstag, dem 01.10.2024 um 11:33 +0100 schrieb Lorenzo Stoakes: > > > OK so what is less perfect is this looks very genuine and present in rc1= so > yeah. > > Thanks so much for helping out here - I may ask you to try some patches = if > that's ok at some point? > > Cheers, Lorenzo > Yes, that would be ok. As a sidenote, when I first got this bug I conducte= d an internet search and found this vaguely similar report: https://lkml.org/lkml/2024/8/28/1558 The report says its from 6.10.0, that would be not related, but at least f= rom the date it's possible that it could have tested the v7 patchset. Bert Karwatzki >