From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <45E59574.50808@domain.hid> Date: Wed, 28 Feb 2007 15:45:08 +0100 From: Jan Kiszka MIME-Version: 1.0 Subject: Re: [Xenomai-core] Re: [BUG] trunk: oops with Stephan's stress test References: <45DEDED6.4070202@domain.hid> <1172237401.26738.13.camel@domain.hid> <45DEED50.4070007@domain.hid> <1172238537.26738.15.camel@domain.hid> <45DEF482.9030903@domain.hid> <45E58CE3.20807@domain.hid> <45E58FB4.6070603@domain.hid> In-Reply-To: <45E58FB4.6070603@domain.hid> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigDC12BA957D8989CF1EFD6BB5" Sender: jan.kiszka@domain.hid List-Id: "Xenomai life and development \(bug reports, patches, discussions\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stephan Zimmermann Cc: xenomai-core This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigDC12BA957D8989CF1EFD6BB5 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable Jan Kiszka wrote: > Stephan Zimmermann wrote: >> Jan Kiszka schrieb: >>> Philippe Gerum wrote: >>>> On Fri, 2007-02-23 at 14:34 +0100, Jan Kiszka wrote: >>>> >>>>> Attached with 3000 points (to play safe). >>>> Great, thanks. >>>> >>> FYI: Switching prio-coupling off doesn't let it trigger anymore. Whic= h >>> /may/ mean that it's related to this feature, but which may also mean= >>> that this corner-case race is just far more unlikely in non-RPI setup= s >>> (and the effects Stephan see are all related to the same bug - >>> hopefully). >>> >>> Jan >>> >> To trigger you again, I just updated my Pentium M Notebook to 2.3.x sv= n >> revision 2264, recompiled everything and gave it a try. (kernel 2.6.20= ) >> Some runs of my already well-known software and the machine freezes >> during shutdown. No oops, no backtrace, no error message. It doesn't >> matter if priority coupling is enabled or not, when it tells me >> 'Stopping K Display Manager: kdm' the cursor freezes, that's it. My >> colleague report's the same beahviour on his AMD SMP mashine. The >> Celeron M crashes during reboot showing ugly backtraces like before. ^^^^ _Re_boot - now I read your message correctly. So you are not facing elementary boot issues on some boxes, but always memory corruption *after* running your demo code, right? Then we should try to find out what mechanism of Xenomai might cause the corruption. Could you, step by step, simplify your test, e.g. leaving out some of the tasks or not using the message queues? This would help to focus the analysis on (hopefully) only a few facilities. Still, the compiler question remains relevant. 2.6.20 e.g. warns me that gcc 4.1.0 may miscompile the kernel (but I'm using a SUSE-patched version that so far behaves). Jan --------------enigDC12BA957D8989CF1EFD6BB5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFF5ZV0niDOoMHTA+kRAmmhAJ9nBby3Q+Az173OO6Y4n9Tykp9EeQCeJ7ko kymeYXXr2H7TmHKhVAFyWho= =iZcj -----END PGP SIGNATURE----- --------------enigDC12BA957D8989CF1EFD6BB5--