From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rolf Eike Beer Subject: Re: 3.12.8 is doing nasty things Date: Sat, 25 Jan 2014 23:40:06 +0100 Message-ID: <38632185.Uo4SvuvNmB@caliban.sf-tec.de> References: <2696873.HIAXvrDslF@caliban.sf-tec.de> <20140124222615.66cb0d2a@borg.lux.tuxicoman.be> <1390689039.2275.52.camel@dabdike.int.hansenpartnership.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart3963997.VMk9lzrmrJ"; micalg="pgp-sha1"; protocol="application/pgp-signature" To: linux-parisc@vger.kernel.org Return-path: In-Reply-To: <1390689039.2275.52.camel@dabdike.int.hansenpartnership.com> List-ID: List-Id: linux-parisc.vger.kernel.org --nextPart3963997.VMk9lzrmrJ Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Am Samstag, 25. Januar 2014, 14:30:39 schrieben Sie: > On Fri, 2014-01-24 at 22:26 +0100, Guy Martin wrote: > > On Fri, 24 Jan 2014 22:07:23 +0100 > > > > Jeroen Roovers wrote: > > > On Fri, 24 Jan 2014 21:44:51 +0100 > > > > > > Rolf Eike Beer wrote: > > > > I reported that I saw strange things happening after upgrading to > > > > 3.12.5. Meanwhile I upgraded to 3.12.8 and things became worse. I > > > > regularly see processes to fail randomly. I can see this as I > > > > somethimes get failures in my nagios because the SSH connection to > > > > the watched host (only the watched one runs .8) fails. > > > > > > Confirmed with any kernel above 3.12.2 that I cared to test (I didn't > > > test 3.12.3). The issues vary from illegal instructions to > > > segmentation faults to double frees in userland, so it's basically a > > > "random" thing. I can't say it's become "worse" after 3.12.5 (since I > > > haven't kept per version statistics). > > > > Same here, 3.12.5 was not behaving correctly and 3.12.8 was even worse. > > With the later, I also experienced sshd segfault, python threading > > segfault/hangs. > > I quickly reverted to 3.12.4 which is far more stable. > > This all sounds like a flushing problem. I can't confirm with my > pa8800 ... but that could be because the additional pa8800 flushes are > masking the problem. Could you try bisecting the parisc commits > between .4 and .5 and see if there's a particular cause? It's the one mmap fix, I see .5 being stable after reverting that fix. Eike --nextPart3963997.VMk9lzrmrJ 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 v2.0.22 (GNU/Linux) iEYEABECAAYFAlLkPVAACgkQXKSJPmm5/E4j4gCfYg6uYs5pk3nvxJlPV2Mcf56r q1IAniGjU/ba0lT9VL/ZZHFqDcFZpoXQ =FT+/ -----END PGP SIGNATURE----- --nextPart3963997.VMk9lzrmrJ--