Ralf Friedl wrote:
>
> Cristian Ionescu-Idbohrn wrote:
>> On Wed, 20 Feb 2008, Denys Vlasenko wrote:
>>
>>> And if it still fails, make both alloc() functions zero out
>>> allocated block:
>>>
>>> static void *
>>> ckmalloc(size_t nbytes)
>>> {
>>> - return ckrealloc(NULL, nbytes);
>>> + return memset(ckrealloc(NULL, nbytes), 0, nbytes);
>>> }
>>>
>>> static void *
>>> stalloc(size_t nbytes)
>>> {
>>> ...
>>> g_stacknleft -= aligned;
>>> + memset(p, 0, nbytes);
>>> return p;
>>> }
>>>
>>> If this helps, then it's only a matter of finding a ckmalloc/stalloc
>>> which really needs to be ckzalloc/stzalloc.
>>>
>> Sorry Denys :(
>> I've no access to my embedded system now and the comming 2+ weeks.
>> Holidays ;-)
>>
>> Maybe a 16Mb RAM qemu could help nail down these problems, in absence of a
>> low memory embeded system, as it seems one of the factors that provokes
>> the errors may be low memory, but I'm just guessing.
>
> What about initializing the memory to non-zero values? That should help
> to find uninitialized references.
>
> static void *
> ckmalloc(size_t nbytes)
> {
> - return ckrealloc(NULL, nbytes);
> + return memset(ckrealloc(NULL, nbytes), 0xDC, nbytes);
> }
>
> static void *
> stalloc(size_t nbytes)
> {
> ...
> g_stacknleft -= aligned;
> + memset(p, 0xDC, nbytes);
> return p;
> }
>
did anyone try (DUMA)efence, Valgrind, memcheck .... ?
(This is a question in the sense: [i have already done it save your power])
re,
wh
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