From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ondrej Valousek Subject: Re: automounter segfaults when using negative cache? Date: Mon, 08 Dec 2008 10:08:35 +0100 Message-ID: <493CE413.5050905@s3group.cz> References: <4937BBBC.9030305@s3group.cz> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: autofs-bounces@linux.kernel.org Errors-To: autofs-bounces@linux.kernel.org To: Jeff Moyer Cc: "autofs@linux.kernel.org" >> I thought all the negative caching is done in user space, but apparently >> kernel has some influence here.... >> Any explanation? >> > > The negative caching is done in userspace. I'm not sure I understand > your question. > > Cheers, > Jeff > Hi Jeff, Ok I was thinking this way: I experience this only on U7 system running U4 kernel - on the same U7 system running U7 kernel I can not replicate this. If the negative caching is done in the user space and there is a bug there which causes the autofs to segfault, how is it possible that is won't segfault on the U7 kernel? I do not know I am still trying to find out if there is any connection to the problem with the automounter hanging that I reported earlier as: - in U7 system running U7 kernel, the autofs does not crash, but hangs (after few days). - in U7 system running U4 kernel, the autofs forks crash regularly but otherwise it works fine (I mean at least the parent autofs fork continue living...) You know what I am trying to say? Thanks, Ondrej