kernel/bpf/verifier.c

1320 	if (env->subprog_info[state->subprogno].stack_depth < size)
1321 		env->subprog_info[state->subprogno].stack_depth = size;
5863 static int round_up_stack_depth(struct bpf_verifier_env *env, int stack_depth)
5866 		return round_up(stack_depth, 16);
5871 	return round_up(max_t(u32, stack_depth, 1), 32);
5917 	depth += round_up_stack_depth(env, subprog[idx].stack_depth);
6011 	depth -= round_up_stack_depth(env, subprog[idx].stack_depth);
6046 	return env->subprog_info[subprog].stack_depth;
19393 		func[i]->aux->stack_depth = env->subprog_info[i].stack_depth;
19805 	u16 stack_depth = subprogs[cur_subprog].stack_depth;
19988 			int stack_off = -stack_depth - 8;
20046 				prog->aux->stack_depth = MAX_BPF_STACK;
20502 			subprogs[cur_subprog].stack_depth += stack_depth_extra;
20505 			stack_depth = subprogs[cur_subprog].stack_depth;
20512 	env->prog->aux->stack_depth = subprogs[0].stack_depth;
20526 					 -subprogs[i].stack_depth, BPF_MAX_LOOPS);
20644  * subprog stack_depth is increased by the size of 3 registers.
20655 	u16 stack_depth = subprogs[cur_subprog].stack_depth;
20656 	u16 stack_depth_roundup = round_up(stack_depth, 8) - stack_depth;
20669 						   -(stack_depth + stack_depth_extra),
20681 			subprogs[cur_subprog].stack_depth += stack_depth_extra;
20683 			stack_depth = subprogs[cur_subprog].stack_depth;
20684 			stack_depth_roundup = round_up(stack_depth, 8) - stack_depth;
20689 	env->prog->aux->stack_depth = env->subprog_info[0].stack_depth;
20928 		env->prog->aux->stack_depth = env->subprog_info[0].stack_depth;
20942 			u32 depth = env->subprog_info[i].stack_depth;