Re: memory leak in 2.6.11-rc2

[Dave Jones <davej@redhat.com>]

On Tue, Jan 25, 2005 at 02:19:24PM +1100, Andrew Tridgell wrote:
 > The problem I've hit now is a severe memory leak. I have applied the
 > patch from Linus for the leak in free_pipe_info(), and still I'm
 > leaking memory at the rate of about 100Mbyte/minute.
 > I've tested with both 2.6.11-rc2 and with 2.6.11-rc1-mm2, both with
 > the pipe leak fix. The setup is:

That's a little more extreme than what I'm seeing, so it may be
something else, but my firewall box needs rebooting every
few days. It leaks around 50MB a day for some reason.
Given it's not got a lot of ram, after 4-5 days or so, it's
completely exhausted its swap too.

It's currently on a 2.6.10-ac kernel, so it's entirely possible that
we're not looking at the same issue, though it could be something
thats been there for a while if your workload makes it appear
quicker than a firewall/ipsec gateway would.
Do you see the same leaks with an earlier kernel ?

post OOM (when there was about 2K free after named got oom-killed)
this is what slabinfo looked like..

dentry_cache        1502   3775    160   25    1 : tunables  120   60    0 : slabdata    151    151      0
vm_area_struct      1599   2021     84   47    1 : tunables  120   60    0 : slabdata     43     43      0
size-128            3431   6262    128   31    1 : tunables  120   60    0 : slabdata    202    202      0
size-64             4352   4575     64   61    1 : tunables  120   60    0 : slabdata     75     75      0
avtab_node          7073   7140     32  119    1 : tunables  120   60    0 : slabdata     60     60      0
size-32             7256   7616     32  119    1 : tunables  120   60    0 : slabdata     64     64      0

		Dave