denx 2.4.20 kernel memory leak

denx 2.4.20 kernel memory leak

[S. Hebbar]

Hello,

I am noticing kernel memory leak when I am getting a file using ftp.
For each ftp get session, the skbuff_head_cache is increasing.

Original:
  skbuff_head_cache  17232  17232    160  718  718    1
After getting a 8 MB file.
  skbuff_head_cache  18094  18096    160  754  754    1

Finally, system runs out of memory and kernel start killing processes.

I don't think this is driver problem. I can "flud ping" (ping -f) for more
than 24 hours without loosing any memory. I am generating 4000 packets/second
to the target using "ping -f"

I am not sure if there is another application which causes memory leak.

I am using denx 2.4.20 kernel. My target processor is MPC8260.

Any help is much appreciated.

Regards,
Hebbar.


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Re: denx 2.4.20 kernel memory leak

[Wolfgang Denk]

In message <200403031444.15398.shebbar@india.tejasnetworks.com> you wrote:
>
> I am noticing kernel memory leak when I am getting a file using ftp.
> For each ftp get session, the skbuff_head_cache is increasing.
...
> I am using denx 2.4.20 kernel. My target processor is MPC8260.

Please update. This is a known problem that has been fixed since:

---------------------
PatchSet 169
Date: 2004/01/08 17:38:41
Author: wd
Branch: HEAD
Tag: (none)
Log:
Patch by Wojciech Kromer, 06 Jan 2004:
Fix sk_buff memory leak problem in 82xx FCC driver.

Members:
        arch/ppc/8260_io/fcc_enet.c:1.7->1.8

---------------------


Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
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