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-rw-r--r--arch/s390/kernel/dis.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index 3be829721cf9..465d52b5e470 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -396,9 +396,14 @@ struct s390_insn *find_insn(unsigned char *code)
unsigned char opfrag;
int i;
+ /* Search the opcode offset table to find an entry which
+ * matches the beginning of the opcode. If there is no match
+ * the last entry will be used, which is the default entry for
+ * unknown instructions as well as 1-byte opcode instructions.
+ */
for (i = 0; i < ARRAY_SIZE(opcode_offset); i++) {
entry = &opcode_offset[i];
- if (entry->opcode == code[0] || entry->opcode == 0)
+ if (entry->opcode == code[0])
break;
}