2 files changed, 11 insertions, 2 deletions

diff --git a/arch/x86/lib/inat.c b/arch/x86/lib/inat.c
index 46fc4ee09fc..88ad5fbda6e 100644
--- a/arch/x86/lib/inat.c
+++ b/arch/x86/lib/inat.c
@@ -82,9 +82,16 @@ insn_attr_t inat_get_avx_attribute(insn_byte_t opcode, insn_byte_t vex_m,
         const insn_attr_t *table;
         if (vex_m > X86_VEX_M_MAX || vex_p > INAT_LSTPFX_MAX)
                 return 0;
-        table = inat_avx_tables[vex_m][vex_p];
+        /* At first, this checks the master table */
+        table = inat_avx_tables[vex_m][0];
         if (!table)
                 return 0;
+        if (!inat_is_group(table[opcode]) && vex_p) {
+                /* If this is not a group, get attribute directly */
+                table = inat_avx_tables[vex_m][vex_p];
+                if (!table)
+                        return 0;
+        }
         return table[opcode];
 }
 
diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c
index 374562ed670..5a1f9f3e3fb 100644
--- a/arch/x86/lib/insn.c
+++ b/arch/x86/lib/insn.c
@@ -202,7 +202,7 @@ void insn_get_opcode(struct insn *insn)
                 m = insn_vex_m_bits(insn);
                 p = insn_vex_p_bits(insn);
                 insn->attr = inat_get_avx_attribute(op, m, p);
-                if (!inat_accept_vex(insn->attr))
+                if (!inat_accept_vex(insn->attr) && !inat_is_group(insn->attr))
                         insn->attr = 0; /* This instruction is bad */
                 goto end;       /* VEX has only 1 byte for opcode */
         }
@@ -249,6 +249,8 @@ void insn_get_modrm(struct insn *insn)
                         pfx = insn_last_prefix(insn);
                         insn->attr = inat_get_group_attribute(mod, pfx,
                                                               insn->attr);
+                        if (insn_is_avx(insn) && !inat_accept_vex(insn->attr))
+                                insn->attr = 0; /* This is bad */
                 }
         }