Re: problem with kmemleak

[Maxin B John]

Hi,

Could you please share some more information about your setup ?

Regards,
Maxin

On Thu, May 12, 2011 at 4:13 AM, ttlxzz ccc <boyzccc@xxxxxxxxx> wrote:
> help~~~ïï please ïthxïï
>
> On Thu, May 12, 2011 at 10:06 AM, ttlxzz ccc <boyzccc@xxxxxxxxx> wrote:
>> Hi, all:
>>
>>
>>
>> I just want to use kmemleak, so I make the CONFIG_DEBUG_KMEMLEAK and
>> CONFIG_DEBUG_FS on, mount the debugfs.
>>
>> But when I insmod mm/kmemleak-test.ko, echo scan >
>> /sys/kernel/debug/kmemleak and cat /sys/kernel/debug/kmemleak. I just
>> see this:
>>
>> unreferenced object 0xffffc90012d21000 (size 64):
>>
>> Âcomm "insmod", pid 13092, jiffies 4298369684
>>
>> Âhex dump (first 32 bytes):
>>
>> Â Â00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Â................
>>
>> Â Â00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Â................
>>
>> Âbacktrace:
>>
>> Â Â[<ffffffffffffffff>] 0xffffffffffffffff
>>
>> unreferenced object 0xffffc90012d24000 (size 64):
>>
>> Âcomm "insmod", pid 13092, jiffies 4298369684
>>
>> Âhex dump (first 32 bytes):
>>
>> Â Â00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Â................
>>
>> Â Â00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Â................
>>
>> Âbacktrace:
>>
>> Â Â[<ffffffffffffffff>] 0xffffffffffffffff
>>
>> unreferenced object 0xffffc90012d27000 (size 64):
>>
>> Âcomm "insmod", pid 13092, jiffies 4298369684
>>
>> Âhex dump (first 32 bytes):
>>
>> Â Â00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Â................
>>
>> Â Â00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Â................
>>
>> Âbacktrace:
>>
>> Â Â[<ffffffffffffffff>] 0xffffffffffffffff
>>
>> There is no other backtrace except [<ffffffffffffffff>]
>> 0xffffffffffffffff. Then I read the mm/kmemleak.c. In
>> kmemleak_seq_show(), I find that the object->trace_len is 1.
>>
>>
>>
>> How can I get the full backtrace?
>>
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