Memory leak problem

robin robin at
Fri Feb 11 17:29:04 EST 2005

Thanks for your help. 

We found the memory leak in the syncppp module in linux.

1. Did somebody encounter any problems(leaks) with the 
syncppp module in denx 2.4.20 kernel?? 

2. Are there any known issues with this module??

The scenario is we are ftp-ing continuosly between 
two nodes using syncppp module. The leak is ocuring at 
both the nodes.


On Thursday 10 Feb 2005 1:10 pm, Gerhard Jaeger wrote:
> On Thursday 10 February 2005 07:07, robin wrote:
> > Hi
> > We have an application running on  denx linux kernel 2.4.20.
> >
> > Apparently there is a memory leak that we are not able to find.
> > The application is giving out of memory error. Even if we restart
> > the application without rebooting the kernel, (killing all application
> > processes and restarting), it gives the same out of memory error.
> > Rebooting the kernel solves the problem.
> >
> > It seems that the memory leak is not at the application level
> > 'cos restarting the application doesnt solve the problem..
> >
> > 1. Any ideas where I should look for the leak??
> Check /proc/slabinfo and see if there are some "supicious" buffer,
> that only increase and never decrease. From the kind of buffer
> showing this behaviour you might find out where to dig...
> Check it before running the application and afterwards.
> > 2. Is there any known memory leak problems with the kernel??
> There are enough places, where a kernel could leak, but in general
> such leaks in the main part are detected really fast. Undiscovered
> leaks are often found in the drivers itself.
> What's your kernel config?
> Which HW are you using?
> What does this application?
> Ciao,
> Gerhard

And I hate redundancy, and having different functions for the same thing.

	- Linus Torvalds on linux-kernel

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