Re: Tracing memory leaks (slabs) in 2.6.9+ kernels?

[Justin Schoeman <justin@expertron.co.za>]

OK - I have the patch working now, but there seems to be a flaw in the 
address reporting. When I look up the reported address in 
/proc/kallsyms, then look in the objdump of the module, the reported 
adress _does_not_ point to a call.

Am I missing something simple here?

Justin

Andrew Morton wrote:
> Justin Schoeman <justin@expertron.co.za> wrote:
> 
>>I am having a problem with memory leaking on a patched kernel.  In order 
>> to pinpoint the leak, I would like to try to trace the allocation points 
>> for the memory.
>>
>> I have found some vague references to patches that allow the user to 
>> dump the caller address for slab allocations, but I cannot find the 
>> patch itself.
>>
>> Can anybody please point me in the right direction - either for that 
>> patch, or any other way to track down leaking slabs?
> 
> 
> 
> From: Manfred Spraul <manfred@colorfullife.com>
> 
> With the patch applied,
> 
> 	echo "size-4096 0 0 0" > /proc/slabinfo
> 
> walks the objects in the size-4096 slab, printing out the calling address
> of whoever allocated that object.
> 
> It is for leak detection.
...