Local variables in Kernel

Thanks HRZ,

Instead of opening a new thread i have a doubt.

I have 2 kernels, that have the same command queue, then for kernel1 i enqueue some buffer lets say:

buf1 = enqueueWrite();

buf2 = enqueueWrite();

buf3 = enqueueWrite();

runkernel1(kernel1,buf1...buf3);

then it says on the console:

Reprogramming device [0] with handle 1

For kernel2 i use as argument the buf1 that i enqueued for kernel1 and enqueue new buffer:

buf4 = write();

...

buf7 = write();

runkernel(kernel2, buf1,buf4..buf7);

then it says on the console:

Reprogramming device [0] with handle 33

After multiple calls on kernel 2 (inside a loop on the host), i get this error:

Assertion failed: mem, file acl_mem.c, line 466

What is the possible cause?