From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <22474211.1170411361268.JavaMail.ngmail@domain.hid> Date: Fri, 2 Feb 2007 11:16:01 +0100 (CET) From: "M. Koehrer" Subject: Re: Re: [Xenomai-help] Error: cat: /proc/xenomai/stat: Cannot allocate In-Reply-To: <1170409755.4981.11.camel@domain.hid> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable References: <1170409755.4981.11.camel@domain.hid> <19981456.1170405795640.JavaMail.ngmail@domain.hid> <1170408789.4981.1.camel@domain.hid> List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: rpm@xenomai.org, mathias_koehrer@domain.hid Cc: xenomai@xenomai.org Hi! I have one kernel module for a special driver running. If I do not load this kernel module, everything seems to work fine. That means, this kernel module is probably causing the issue... I have to look closer to it... Sorry for any confusion! Regards Mathias=20 > On Fri, 2007-02-02 at 10:33 +0100, Philippe Gerum wrote: > > On Fri, 2007-02-02 at 09:43 +0100, M. Koehrer wrote: > > > Hi everybody, > > >=20 > > > I have a strange issue frequently when reading /proc/xenomai/stat. > > > I do a cat /proc/xenomai/stat and I get an "Cannot allocate memory" > error. > > > This happens typcially after I have started and terminated by > application that uses a number of tasks. > > > I am able to reproduce it deterministically... > > > While the application is running, I can see the stat values perfectly= . > > > Here is the head output of all /proc/xenomai/* files: > >=20 > > At first sight looking at the code, there seems to be a memory leak > > caused by an unfree kmalloc() block in the sched & stat sequence > > routines. Will confirm and fix. Thanks, > >=20 >=20 > Not confirmed for the leakage part regarding kmalloc(). We do have a > seq_release_private() freeing the allocated block, so back to square #1. > This said, some kernel memory is not released somewhere, as running > vmstat tells me here. >=20 > Btw, is the rest of your system functional after the error occurs, or is > a reboot needed afterwise? >=20 > --=20 > Philippe. >=20 >=20 >=20 --=20 Mathias Koehrer mathias_koehrer@domain.hid Viel oder wenig? Schnell oder langsam? Unbegrenzt surfen + telefonieren ohne Zeit- und Volumenbegrenzung? DAS TOP ANGEBOT JETZT bei Arcor: g=FCnsti= g und schnell mit DSL - das All-Inclusive-Paket f=FCr clevere Doppel-Sparer, nur 44,85 =80 inkl. DSL- und ISDN-Grundgeb=FChr! http://www.arcor.de/rd/emf-dsl-2