all: make timeouts configurable

Add sys/targets.Timeouts struct that parametrizes timeouts throughout the system.
The struct allows to control syscall/program/no output timeouts for OS/arch/VM/etc.
See comment on the struct for more details.

4 files changed, 24 insertions, 6 deletions

diff --git a/pkg/csource/csource.go b/pkg/csource/csource.go
index b53b3b97f..a01141567 100644
--- a/pkg/csource/csource.go
+++ b/pkg/csource/csource.go
@@ -29,6 +29,7 @@ import (
 	"regexp"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/google/syzkaller/prog"
 	"github.com/google/syzkaller/sys/targets"
@@ -93,11 +94,12 @@ func Write(p *prog.Prog, opts Options) ([]byte, error) {
 		replacements["SANDBOX_FUNC"] = replacements["SYSCALLS"]
 		replacements["SYSCALLS"] = "unused"
 	}
-	replacements["PROGRAM_TIMEOUT_MS"] = "5000"
-	timeoutExpr := "45"
+	timeouts := ctx.sysTarget.Timeouts(opts.Slowdown)
+	replacements["PROGRAM_TIMEOUT_MS"] = fmt.Sprint(int(timeouts.Program / time.Millisecond))
+	timeoutExpr := fmt.Sprint(int(timeouts.Syscall / time.Millisecond))
 	for i, call := range p.Calls {
 		if timeout := call.Meta.Attrs.Timeout; timeout != 0 {
-			timeoutExpr += fmt.Sprintf(" + (call == %d ? %d : 0)", i, timeout)
+			timeoutExpr += fmt.Sprintf(" + (call == %v ? %v : 0)", i, timeout*uint64(timeouts.Scale))
 		}
 	}
 	replacements["CALL_TIMEOUT_MS"] = timeoutExpr
diff --git a/pkg/csource/csource_test.go b/pkg/csource/csource_test.go
index f6d04b35c..951f9f09a 100644
--- a/pkg/csource/csource_test.go
+++ b/pkg/csource/csource_test.go
@@ -53,6 +53,7 @@ var executorOpts = Options{
 	Collide:   true,
 	Repeat:    true,
 	Procs:     2,
+	Slowdown:  1,
 	Sandbox:   "none",
 	Repro:     true,
 	UseTmpDir: true,
diff --git a/pkg/csource/options.go b/pkg/csource/options.go
index ebea29fc2..3c1790483 100644
--- a/pkg/csource/options.go
+++ b/pkg/csource/options.go
@@ -23,6 +23,7 @@ type Options struct {
 	Repeat      bool   `json:"repeat,omitempty"`
 	RepeatTimes int    `json:"repeat_times,omitempty"` // if non-0, repeat that many times
 	Procs       int    `json:"procs"`
+	Slowdown    int    `json:"slowdown"`
 	Sandbox     string `json:"sandbox"`
 
 	Fault     bool `json:"fault,omitempty"` // inject fault into FaultCall/FaultNth
@@ -154,6 +155,7 @@ func DefaultOpts(cfg *mgrconfig.Config) Options {
 		Collide:    true,
 		Repeat:     true,
 		Procs:      cfg.Procs,
+		Slowdown:   cfg.Timeouts.Slowdown,
 		Sandbox:    cfg.Sandbox,
 		UseTmpDir:  true,
 		HandleSegv: true,
@@ -190,9 +192,11 @@ func (opts Options) Serialize() []byte {
 }
 
 func DeserializeOptions(data []byte) (Options, error) {
-	var opts Options
-	// Before CloseFDs was added, close_fds() was always called, so default to true.
-	opts.CloseFDs = true
+	opts := Options{
+		Slowdown: 1,
+		// Before CloseFDs was added, close_fds() was always called, so default to true.
+		CloseFDs: true,
+	}
 	if err := json.Unmarshal(data, &opts); err == nil {
 		return opts, nil
 	}
diff --git a/pkg/csource/options_test.go b/pkg/csource/options_test.go
index b9594e341..cd247fada 100644
--- a/pkg/csource/options_test.go
+++ b/pkg/csource/options_test.go
@@ -37,6 +37,7 @@ func TestParseOptionsCanned(t *testing.T) {
 			Collide:      true,
 			Repeat:       true,
 			Procs:        10,
+			Slowdown:     1,
 			Sandbox:      "namespace",
 			Fault:        true,
 			FaultCall:    1,
@@ -59,6 +60,7 @@ func TestParseOptionsCanned(t *testing.T) {
 			Collide:      true,
 			Repeat:       true,
 			Procs:        10,
+			Slowdown:     1,
 			Sandbox:      "android",
 			Fault:        true,
 			FaultCall:    1,
@@ -78,6 +80,7 @@ func TestParseOptionsCanned(t *testing.T) {
 			Collide:      true,
 			Repeat:       true,
 			Procs:        1,
+			Slowdown:     1,
 			Sandbox:      "none",
 			Fault:        false,
 			FaultCall:    -1,
@@ -95,6 +98,7 @@ func TestParseOptionsCanned(t *testing.T) {
 			Collide:      true,
 			Repeat:       true,
 			Procs:        1,
+			Slowdown:     1,
 			Sandbox:      "",
 			Fault:        false,
 			FaultCall:    -1,
@@ -112,6 +116,7 @@ func TestParseOptionsCanned(t *testing.T) {
 			Collide:      true,
 			Repeat:       true,
 			Procs:        1,
+			Slowdown:     1,
 			Sandbox:      "namespace",
 			Fault:        false,
 			FaultCall:    -1,
@@ -147,6 +152,7 @@ func allOptionsSingle(OS string) []Options {
 			Repeat:    true,
 			Sandbox:   "none",
 			UseTmpDir: true,
+			Slowdown:  1,
 		}
 		opts = append(opts, enumerateField(OS, opt, i)...)
 	}
@@ -200,6 +206,11 @@ func enumerateField(OS string, opt Options, field int) []Options {
 			fld.SetInt(times)
 			opts = append(opts, opt)
 		}
+	} else if fldName == "Slowdown" {
+		for _, val := range []int64{1, 10} {
+			fld.SetInt(val)
+			opts = append(opts, opt)
+		}
 	} else if fldName == "FaultCall" {
 		opts = append(opts, opt)
 	} else if fldName == "FaultNth" {