[OpenSIPS-Users] segmentation fault when calling pkg_malloc

[Dan Pascu]

On Thursday 12 March 2009, Vasil Kolev wrote:
> This doesn't seem like running out of memory, more like a memory
> corruption. The first thing to check is if either 'frag' or 'f' are
> NULL or invalid (e.g. in gdb do "print f", "print frag" and see what
> does that say). After that try dereferencing them, seeing how could
> they get these values, etc.

I've seen this thing before. I'm willing to bet that the pointers are not 
NULL. They are most likely composed of ascii byte codes from some SIP 
message header (as a result of the allocator memory being overwritten by 
part of the processed message).

Unfortunately I have no idea what causes this, and the only solution to a 
similar problem I was experiencing was to replace the opensips private 
memory allocator with the system memory allocator when building opensips.

Maybe the thread author can try using the system memory allocator to see 
if the problem goes away. If so, we definitely have a problem with the 
memory allocator. If not, he may have a different issue somewhere else in 
his code.

-- 
Dan