From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Haigh Subject: Re: mdadm: sending ioctl 1261 to a partition! Date: Tue, 06 Mar 2012 13:00:01 +1100 Message-ID: <4F556FA1.5020006@crc.id.au> References: <4F54B997.3060207@crc.id.au> <4F54D314.9060504@anonymous.org.uk> <4F550BA8.3010306@crc.id.au> <20120306070143.4f8abc0e@notabene.brown> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms060002050000050000060003" Return-path: In-Reply-To: <20120306070143.4f8abc0e@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: NeilBrown Cc: John Robinson , linux-raid@vger.kernel.org List-Id: linux-raid.ids This is a cryptographically signed message in MIME format. --------------ms060002050000050000060003 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable On 6/03/2012 7:01 AM, NeilBrown wrote: > On Tue, 06 Mar 2012 05:53:28 +1100 Steven Haigh wrot= e: > >> On 6/03/2012 1:52 AM, John Robinson wrote: >>> On 05/03/2012 13:03, Steven Haigh wrote: >>>> I've noticed that recently I've managed to get a ton of messages lik= e >>>> this at boot: >>>> >>>> mdadm: sending ioctl 1261 to a partition! >>>> mdadm: sending ioctl 800c0910 to a partition! >>> >>> It's probably harmless. >>> >>> http://lists.debian.org/debian-kernel/2012/01/msg01105.html says "Thi= s >>> warning was introduced as part of the fix for CVE-2011-4127" >>> >>> https://bugzilla.redhat.com/show_bug.cgi?id=3D783955#c4 says "Actuall= y, >>> the warning seems a false positive to me" >> >> I did see these - and I probably should have mentioned it in the >> original post. Naughty me for posting at times I should really be asle= ep. >> >> The general jist of it seemed to be "it always failed before, now we >> just know about it". What makes me wonder is that if it always failed >> before, why do we do it in the first place? >> > > 800c0910 is 'are you an md device'. So failure is a valid response. > > 1261 is flush-bufs. I hope that does still work on partitions.... Thanks Neil, Any ideas how I can test this to check if flush-bufs is=20 working? While I'm not a code junkie these days - I'm great at picking=20 holes in thing ;) I picked it up as it only seemed to be visible in 2.6.32.56. I don't=20 recall seeing it in any previous 2.6.32.x kernel. --=20 Steven Haigh Email: netwiz@crc.id.au Web: http://www.crc.id.au Phone: (03) 9001 6090 - 0412 935 897 Fax: (03) 8338 0299 --------------ms060002050000050000060003 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIOSjCC BjQwggQcoAMCAQICAR4wDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoT DVN0YXJ0Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNp Z25pbmcxKTAnBgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3 MTAyNDIxMDE1NVoXDTE3MTAyNDIxMDE1NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1T dGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWdu aW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAxIFByaW1hcnkgSW50ZXJtZWRpYXRlIENs 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