syzkaller/pkg/kd/kd_test.go
Dmitry Vyukov 8136bdad2f pkg/kd: add KD protocol decoder
Very primitive decoder that only decodes amd64 exceptions.
Use it in vm/gce. Now crashes contain something more or less
reasonable which is caught by manager as crash:

BUG: first chance exception 0x80000003

&kd.stateChange64{state:0x3030, processorLevel:0x6, processor:0x0,
numProcessors:0x2, thread:0xffff9c0bd015e080, pc:0xfffff8017615c380,
exception:kd.exception64{code:0x80000003, flags:0x0, record:0x0,
address:0xfffff8017615c380, numParams:0x1, unused:0x0, params:[15]uint64{
0x0, 0x40, 0xfffff801768699e0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0}, firstChance:0x1}, report:kd.controlReport{
dr6:0xffff0ff0, dr7:0x400, eflags:0x86, numInstr:0x10, reportFlags:0x3,
instr:[16]uint8{0xcc, 0xc3, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xf, 0x1f,
0x84, 0x0, 0x0, 0x0, 0x0, 0x0}, cs:0x10, ds:0x2b, es:0x2b, fs:0x53}}
2017-09-28 16:53:58 +02:00

42 lines
2.0 KiB
Go

// Copyright 2017 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package kd
import (
"testing"
)
func TestCanned(t *testing.T) {
start, size, decoded := Decode(exceptionPacket)
if start != 0 || size != len(exceptionPacket) {
t.Fatalf("bad start/size %v/%v, want %v/%v", start, size, 0, len(exceptionPacket))
}
t.Logf("%s", decoded)
}
var exceptionPacket = []byte{
0x30, 0x30, 0x30, 0x30, 0x07, 0x00, 0xF0, 0x00, 0x00, 0x08, 0x80, 0x80,
0xE6, 0x1F, 0x00, 0x00, 0x30, 0x30, 0x00, 0x00, 0x06, 0x00, 0x01, 0x00,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x22, 0xBC,
0x85, 0x8C, 0xFF, 0xFF, 0x80, 0x33, 0x5E, 0xC5, 0x02, 0xF8, 0xFF, 0xFF,
0x03, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x80, 0x33, 0x5E, 0xC5, 0x02, 0xF8, 0xFF, 0xFF,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xE0, 0x59, 0x46, 0xC5, 0x02, 0xF8, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xF0, 0x0F, 0xFE, 0xFF, 0x00, 0x00, 0x00, 0x00,
0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86, 0x00, 0x00, 0x00,
0x10, 0x00, 0x03, 0x00, 0xCC, 0xC3, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC,
0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x2B, 0x00,
0x2B, 0x00, 0x53, 0x00,
}