Re: Potential memory leaks reported by Valgrind against some frequently used commands
On Tue, Mar 01, 2011 at 08:38:42PM -0600, Ron Johnson wrote: On 03/01/2011 06:19 AM, ximalaya wrote: Hi all, [snip] BTW, I ever tried on Redhat Linux 9, no such problem. This is the interesting part. Is RH keeping their patches, or are upstream and other distros just not determining them worthwhile? Not really. The interesting part is 'was this done with the same version of valgrind?' Note that valgrind has a feature to blacklist false positives and issues (like this one) that don't matter at all. -- The biometric identification system at the gates of the CIA headquarters works because there's a guard with a large gun making sure no one is trying to fool the system. http://www.schneier.com/blog/archives/2009/01/biometrics.html -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110302091754.gk3...@celtic.nixsys.be
Re: Potential memory leaks reported by Valgrind against some frequently used commands
2011/3/1 ximalaya im...@126.com: I notice that, valgrind reports memory leaks against some frequently used commands on Debian 6.0, 5.0.7 and 4.0. These commands include netstat, ps -ef, ls -latr, top, etc. For short-running processes that's generally not a problem. -- Olaf -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/aanlktikrvavkxvzjgltmgrqerca7fxii9hdl8mhvp...@mail.gmail.com
Re: Potential memory leaks reported by Valgrind against some frequently used commands
On Tue, Mar 1, 2011 at 19:54, Olaf van der Spek olafvds...@gmail.com wrote: 2011/3/1 ximalaya im...@126.com: I notice that, valgrind reports memory leaks against some frequently used commands on Debian 6.0, 5.0.7 and 4.0. These commands include netstat, ps -ef, ls -latr, top, etc. For short-running processes that's generally not a problem. -- Olaf It would be good if we fix them, :) -- Regards, Aron Xu -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/aanlktint9f0+ppndptnkcemgiabbxvvwwhnkab9z_...@mail.gmail.com
Re: Potential memory leaks reported by Valgrind against some frequently used commands
01.03.2011 14:56, Aron Xu wrote: On Tue, Mar 1, 2011 at 19:54, Olaf van der Spek olafvds...@gmail.com wrote: 2011/3/1 ximalaya im...@126.com: I notice that, valgrind reports memory leaks against some frequently used commands on Debian 6.0, 5.0.7 and 4.0. These commands include netstat, ps -ef, ls -latr, top, etc. For short-running processes that's generally not a problem. It would be good if we fix them, :) There are at least two kinds of memory leaks which may be present and reported here. One is a single memory buffer allocated (and may be reallocated) for some one-time task and not freed. And another may be a missing free for every object a program iterates - like in case of ls, a memleak of an object for every file it lists. First kinds of memory leaks are definitely _not_ worth to fix, because if we'll exit right away anyway, kernel will free all our memory in one go after process termination, and by using free() we just wating CPU time and gains nothing at all. But second kind of leaks is definitely worth to fix, for obvious reason: tools like ls(1) should not grow their memory without bounds. But I suspect there are only kind-1 leaks you found, at least the ones which are reported are all of this sort. Thanks! /mjt -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4d6ce0c0.7050...@msgid.tls.msk.ru
Re: Potential memory leaks reported by Valgrind against some frequently used commands
On 03/01/2011 06:19 AM, ximalaya wrote: Hi all, [snip] BTW, I ever tried on Redhat Linux 9, no such problem. This is the interesting part. Is RH keeping their patches, or are upstream and other distros just not determining them worthwhile? -- I prefer banana-flavored energy bars made from tofu. -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4d6dadb2.4010...@cox.net
Re: Potential memory leaks reported by Valgrind against some frequently used commands
On Tue, Mar 01, 2011 at 08:38:42PM -0600, Ron Johnson wrote: On 03/01/2011 06:19 AM, ximalaya wrote: BTW, I ever tried on Redhat Linux 9, no such problem. This is the interesting part. Is RH keeping their patches, or are upstream and other distros just not determining them worthwhile? given that RH9 is like what, 10 years old, i'd think that it's just as likely that the utilities just weren't leaky at the time. sean -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110302064339.ga27...@cobija.connexer.com
Re: Potential memory leaks reported by Valgrind against some frequently used commands
Hi! On Wednesday 02 March 2011 03.38:42 Ron Johnson wrote: On 03/01/2011 06:19 AM, ximalaya wrote: Hi all, [snip] BTW, I ever tried on Redhat Linux 9, no such problem. This is the interesting part. Is RH keeping their patches, or are upstream and other distros just not determining them worthwhile? Or is it an eglibc libc issue? (Not sure what libc RH is using.) -- vbi -- Vertrauen ist gut. Anwalt ist saugeil. signature.asc Description: This is a digitally signed message part.
