From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga09.intel.com ([134.134.136.24]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1SDcRF-0004ff-2F for linux-mtd@lists.infradead.org; Fri, 30 Mar 2012 14:04:25 +0000 Message-ID: <1333116451.5440.39.camel@sauron.fi.intel.com> Subject: Re: UBIFS crash (was Re: Problems with mtd_oobtest) From: Artem Bityutskiy To: Matej Kupljen Date: Fri, 30 Mar 2012 17:07:31 +0300 In-Reply-To: References: <1331559644.12037.33.camel@sauron.fi.intel.com> <1331619893.2443.10.camel@koala> <1331628462.12037.56.camel@sauron.fi.intel.com> <1331727617.3730.5.camel@sauron.fi.intel.com> <1331731119.3730.17.camel@sauron.fi.intel.com> <1332421678.18717.25.camel@sauron.fi.intel.com> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-F3IK6GD/ZP7nLljBs/R1" Mime-Version: 1.0 Cc: linux-mtd Reply-To: dedekind1@gmail.com List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --=-F3IK6GD/ZP7nLljBs/R1 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sat, 2012-03-24 at 08:22 +0100, Matej Kupljen wrote: > To all, >=20 > after reading the posts on the mailing list, with similar problems, I > believe that > Artem was right already in the beginning where he suggested that I am > experiencing > "unstable bit" issue. >=20 > If you look at the kernel log, the dump of the empty space, clearly > shows one bit-flip, > where the first word is read as 0xfffffffd, instead of 0xffffffff. The unstable bits issue is related to unclean reboots. AFAIU, you observe problems when you do not have power cuts at all. This means you have some issues in your driver/HW level. Did you check if your driver corrects bit-flips in empty space? --=20 Best Regards, Artem Bityutskiy --=-F3IK6GD/ZP7nLljBs/R1 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJPdb4jAAoJECmIfjd9wqK0csMQAL1cBOZufcaYeW8OXM3GOs3x rqvxv1vvIw5eex/KZ3ILQhEh7sLW/rXAwzrEDYlgjUI59ZYrrYZfiVzCdmULa9z4 oK8lpB1lEAVY4PdFDK2i9aPMWrYRcvrt8shzNgDnP4XazEoZ+AJ5CFbdF1O/UgzC 0vohd6B4z2S5buHXmso1XXIgSmU/Tpcwm+ZwA0M5ae49yeSkKwY/OHLrYhITyRvw 0hpoP6fPoCJhAlJLkOuBalhxS6F8ZgRlMIyOFzHGo0MA7lSqlnMjy6yGaE+q4PrC rKrJoGMJ+w96Ibv8CyHUbprgXl/ErBEUhFftX2rafPKbY+3M4ub4gHgVKggoLKo+ zhokI/Eo1RJHLakpwObjMVzIhR6LevVxnNXGVoNhEY7wjFUhUQc6EUSEPfDE8dkx FHz0kHTBXC3uvVNECoqSocrjOrg60qo22KU0KmZboD8Vq3u1qyxPqzQVPrRLeOCK 2+vE/EYmMcg08Q6CuOE0LTBvEOKCHZ4CTtf2olPVv2rGWb1HPkTTsLL3itvP3Go8 GePAxuTwlRIMPzqm6Lec1L5+oqwnfuM9MVRP5X8/5hiJRUAd4DKZhGw9tDu4QaRl nmtwIvTcil52qXJd7rV9WJvSFZ0Mav/bQopbSATFMPNQ+y2umrQuESfsRI3m15jd Rq3pGsMXuzwZmYMLiiEJ =u0oE -----END PGP SIGNATURE----- --=-F3IK6GD/ZP7nLljBs/R1--