KFENCE_STACK_DEPTH
unsigned long stack_entries[KFENCE_STACK_DEPTH];
num_stack_entries = stack_trace_save(stack_entries, KFENCE_STACK_DEPTH, 0);
num_stack_entries = stack_trace_save(track->stack_entries, KFENCE_STACK_DEPTH, 1);
unsigned long stack_entries[KFENCE_STACK_DEPTH];
unsigned long stack_entries[KFENCE_STACK_DEPTH] = { 0 };
num_stack_entries = stack_trace_save_regs(regs, stack_entries, KFENCE_STACK_DEPTH, 0);
num_stack_entries = stack_trace_save(stack_entries, KFENCE_STACK_DEPTH, 1);