UCM: Avoid using malloc() in relocation table patching code.
UCM: Avoid using malloc() in relocation table patching code.

 Calling realloc() from relocation patching code may happen while we are
in the middle of stalling malloc hooks, so avoid it. Use small buffer on
the stack instead.

sergsagal1/ucx_rocm,sergsagal1/ucx_rocm,abouteiller/ucx,abouteiller/ucx,abouteiller/ucx,shssf/ucx,shssf/ucx,sergsagal1/ucx_rocm,abouteiller/ucx,shssf/ucx