Merge branch 'verifier-fixes'

Daniel Borkmann says:

====================
The series contains two fixes in BPF core and test cases. For details
please see individual patches. Thanks!
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

include/linux/bpf_verifier.h

@@ -51,6 +51,9 @@ struct bpf_reg_state {
 		 *   PTR_TO_MAP_VALUE_OR_NULL
 		 */
 		struct bpf_map *map_ptr;
+
+		/* Max size from any of the above. */
+		unsigned long raw;
 	};
 	/* Fixed part of pointer offset, pointer types only */
 	s32 off;

kernel/bpf/verifier.c

@@ -2852,10 +2852,6 @@ static int check_helper_call(struct bpf_verifier_env *env, int func_id, int insn
 		regs[BPF_REG_0].type = NOT_INIT;
 	} else if (fn->ret_type == RET_PTR_TO_MAP_VALUE_OR_NULL ||
 		   fn->ret_type == RET_PTR_TO_MAP_VALUE) {
-		if (fn->ret_type == RET_PTR_TO_MAP_VALUE)
-			regs[BPF_REG_0].type = PTR_TO_MAP_VALUE;
-		else
-			regs[BPF_REG_0].type = PTR_TO_MAP_VALUE_OR_NULL;
 		/* There is no offset yet applied, variable or fixed */
 		mark_reg_known_zero(env, regs, BPF_REG_0);
 		/* remember map_ptr, so that check_map_access()
@@ -2868,7 +2864,12 @@ static int check_helper_call(struct bpf_verifier_env *env, int func_id, int insn
 			return -EINVAL;
 		}
 		regs[BPF_REG_0].map_ptr = meta.map_ptr;
-		regs[BPF_REG_0].id = ++env->id_gen;
+		if (fn->ret_type == RET_PTR_TO_MAP_VALUE) {
+			regs[BPF_REG_0].type = PTR_TO_MAP_VALUE;
+		} else {
+			regs[BPF_REG_0].type = PTR_TO_MAP_VALUE_OR_NULL;
+			regs[BPF_REG_0].id = ++env->id_gen;
+		}
 	} else if (fn->ret_type == RET_PTR_TO_SOCKET_OR_NULL) {
 		int id = acquire_reference_state(env, insn_idx);
 		if (id < 0)
@@ -3046,7 +3047,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
 			dst_reg->umax_value = umax_ptr;
 			dst_reg->var_off = ptr_reg->var_off;
 			dst_reg->off = ptr_reg->off + smin_val;
-			dst_reg->range = ptr_reg->range;
+			dst_reg->raw = ptr_reg->raw;
 			break;
 		}
 		/* A new variable offset is created.  Note that off_reg->off
@@ -3076,10 +3077,11 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
 		}
 		dst_reg->var_off = tnum_add(ptr_reg->var_off, off_reg->var_off);
 		dst_reg->off = ptr_reg->off;
+		dst_reg->raw = ptr_reg->raw;
 		if (reg_is_pkt_pointer(ptr_reg)) {
 			dst_reg->id = ++env->id_gen;
 			/* something was added to pkt_ptr, set range to zero */
-			dst_reg->range = 0;
+			dst_reg->raw = 0;
 		}
 		break;
 	case BPF_SUB:
@@ -3108,7 +3110,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
 			dst_reg->var_off = ptr_reg->var_off;
 			dst_reg->id = ptr_reg->id;
 			dst_reg->off = ptr_reg->off - smin_val;
-			dst_reg->range = ptr_reg->range;
+			dst_reg->raw = ptr_reg->raw;
 			break;
 		}
 		/* A new variable offset is created.  If the subtrahend is known
@@ -3134,11 +3136,12 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
 		}
 		dst_reg->var_off = tnum_sub(ptr_reg->var_off, off_reg->var_off);
 		dst_reg->off = ptr_reg->off;
+		dst_reg->raw = ptr_reg->raw;
 		if (reg_is_pkt_pointer(ptr_reg)) {
 			dst_reg->id = ++env->id_gen;
 			/* something was added to pkt_ptr, set range to zero */
 			if (smin_val < 0)
-				dst_reg->range = 0;
+				dst_reg->raw = 0;
 		}
 		break;
 	case BPF_AND: