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-rw-r--r--src/cmd/go/testdata/script/test_fuzz_minimize.txt6
-rw-r--r--src/internal/fuzz/fuzz.go24
2 files changed, 17 insertions, 13 deletions
diff --git a/src/cmd/go/testdata/script/test_fuzz_minimize.txt b/src/cmd/go/testdata/script/test_fuzz_minimize.txt
index c180890a9b..f0adb9ec3e 100644
--- a/src/cmd/go/testdata/script/test_fuzz_minimize.txt
+++ b/src/cmd/go/testdata/script/test_fuzz_minimize.txt
@@ -23,14 +23,14 @@ stdout FAIL
# Test that fuzzminimizetime can be zero seconds, and minimization is disabled
! go test -fuzz=FuzzMinimizeZeroDurationSet -run=FuzzMinimizeZeroDurationSet -fuzztime=10000x -fuzzminimizetime=0s minimizer_test.go
! stdout '^ok'
-! stdout 'found a crash, minimizing...'
+! stdout 'minimizing'
stdout 'there was an Error'
stdout FAIL
# Test that fuzzminimizetime can be zero times, and minimization is disabled
! go test -fuzz=FuzzMinimizeZeroLimitSet -run=FuzzMinimizeZeroLimitSet -fuzztime=10000x -fuzzminimizetime=0x minimizer_test.go
! stdout '^ok'
-! stdout 'found a crash, minimizing...'
+! stdout 'minimizing'
stdout 'there was an Error'
stdout FAIL
@@ -51,7 +51,7 @@ rm testdata
# Test that minimization is working for non-recoverable errors.
! go test -fuzz=FuzzMinimizerNonrecoverable -run=FuzzMinimizerNonrecoverable -fuzztime=10000x minimizer_test.go
! stdout '^ok'
-stdout 'found a crash, minimizing'
+stdout 'minimizing'
stdout 'fuzzing process terminated unexpectedly: exit status 99'
stdout FAIL
diff --git a/src/internal/fuzz/fuzz.go b/src/internal/fuzz/fuzz.go
index c19ea35f23..816da3286f 100644
--- a/src/internal/fuzz/fuzz.go
+++ b/src/internal/fuzz/fuzz.go
@@ -239,7 +239,7 @@ func CoordinateFuzzing(ctx context.Context, opts CoordinateFuzzingOpts) (err err
// Send it back to a worker for minimization. Disable inputC so
// other workers don't continue fuzzing.
crashMinimizing = &result
- fmt.Fprintf(c.opts.Log, "found a crash, minimizing...\n")
+ fmt.Fprintf(c.opts.Log, "fuzz: found a %d-byte crash input; minimizing...\n", len(result.entry.Data))
c.queueForMinimization(result, nil)
} else if !crashWritten {
// Found a crasher that's either minimized or not minimizable.
@@ -256,7 +256,7 @@ func CoordinateFuzzing(ctx context.Context, opts CoordinateFuzzingOpts) (err err
fmt.Fprintf(
c.opts.Log,
"DEBUG new crasher, elapsed: %s, id: %s, parent: %s, gen: %d, size: %d, exec time: %s\n",
- time.Since(c.startTime),
+ c.elapsed(),
fileName,
result.entry.Parent,
result.entry.Generation,
@@ -272,7 +272,7 @@ func CoordinateFuzzing(ctx context.Context, opts CoordinateFuzzingOpts) (err err
fmt.Fprintf(
c.opts.Log,
"DEBUG processed an initial input, elapsed: %s, id: %s, new bits: %d, size: %d, exec time: %s\n",
- time.Since(c.startTime),
+ c.elapsed(),
result.entry.Parent,
countBits(diffCoverage(c.coverageMask, result.coverageData)),
len(result.entry.Data),
@@ -291,7 +291,7 @@ func CoordinateFuzzing(ctx context.Context, opts CoordinateFuzzingOpts) (err err
fmt.Fprintf(
c.opts.Log,
"DEBUG finished processing input corpus, elapsed: %s, entries: %d, initial coverage bits: %d\n",
- time.Since(c.startTime),
+ c.elapsed(),
len(c.corpus.entries),
countBits(c.coverageMask),
)
@@ -329,7 +329,7 @@ func CoordinateFuzzing(ctx context.Context, opts CoordinateFuzzingOpts) (err err
fmt.Fprintf(
c.opts.Log,
"DEBUG new interesting input, elapsed: %s, id: %s, parent: %s, gen: %d, new bits: %d, total bits: %d, size: %d, exec time: %s\n",
- time.Since(c.startTime),
+ c.elapsed(),
result.entry.Name,
result.entry.Parent,
result.entry.Generation,
@@ -345,7 +345,7 @@ func CoordinateFuzzing(ctx context.Context, opts CoordinateFuzzingOpts) (err err
fmt.Fprintf(
c.opts.Log,
"DEBUG worker reported interesting input that doesn't expand coverage, elapsed: %s, id: %s, parent: %s, minimized: %t\n",
- time.Since(c.startTime),
+ c.elapsed(),
result.entry.Name,
result.entry.Parent,
result.minimizeAttempted,
@@ -644,12 +644,12 @@ func (c *coordinator) updateStats(result fuzzResult) {
}
func (c *coordinator) logStats() {
- elapsed := time.Since(c.startTime)
+ elapsed := c.elapsed()
if c.coverageOnlyRun() {
- fmt.Fprintf(c.opts.Log, "gathering baseline coverage, elapsed: %.1fs, workers: %d, left: %d\n", elapsed.Seconds(), c.opts.Parallel, c.covOnlyInputs)
+ fmt.Fprintf(c.opts.Log, "gathering baseline coverage, elapsed: %s, workers: %d, left: %d\n", elapsed, c.opts.Parallel, c.covOnlyInputs)
} else {
- rate := float64(c.count) / elapsed.Seconds()
- fmt.Fprintf(c.opts.Log, "fuzzing, elapsed: %.1fs, execs: %d (%.0f/sec), workers: %d, interesting: %d\n", elapsed.Seconds(), c.count, rate, c.opts.Parallel, c.interestingCount)
+ rate := float64(c.count) / time.Since(c.startTime).Seconds() // be more precise here
+ fmt.Fprintf(c.opts.Log, "fuzz: elapsed: %s, execs: %d (%.0f/sec), workers: %d, interesting: %d\n", elapsed, c.count, rate, c.opts.Parallel, c.interestingCount)
}
}
@@ -820,6 +820,10 @@ func (c *coordinator) canMinimize() bool {
(c.opts.Limit == 0 || c.count+c.countWaiting < c.opts.Limit)
}
+func (c *coordinator) elapsed() time.Duration {
+ return time.Since(c.startTime).Round(1 * time.Second)
+}
+
// readCache creates a combined corpus from seed values and values in the cache
// (in GOCACHE/fuzz).
//