🏎️ access score impact safely #1526
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We have a number of errors like this one below, I am not 100% sure why
we are accessing an invalid memory address or nil pointer but, this is
a best-effort to access the score impact safely.
```
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x161e309]
goroutine 86 [running]:
go.mondoo.com/cnspec/v11/policy.(*bandedScoreCalculator).Add(0x22618c0?, 0xc00101f8c0?, 0xc000c83858?)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/score_calculator.go:505 +0x69
go.mondoo.com/cnspec/v11/policy.AddSpecdScore({0x228f728, 0xc001928600}, 0xc000c83858?, 0x58?, 0xc00115fc40)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/score_calculator.go:103 +0xb9
go.mondoo.com/cnspec/v11/policy/executor/internal.(*ReportingJobNodeData).score(0xc0015e8080)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/executor/internal/nodes.go:593 +0x279
go.mondoo.com/cnspec/v11/policy/executor/internal.(*ReportingJobNodeData).recalculate(0xc0015e8080)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/executor/internal/nodes.go:486 +0x3f
go.mondoo.com/cnspec/v11/policy/executor/internal.(*GraphExecutor).Execute(0xc000db6370)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/executor/internal/graph.go:121 +0x46d
go.mondoo.com/cnspec/v11/policy/executor.ExecuteResolvedPolicy({0x229a8c8, 0xc000343700}, {0x229dcc8, 0xc000e0bec0}, {0xc000e747e0, 0x56}, 0xc001215f00, {0xc000a76160, 0x1, 0x8}, ...)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/executor/graph.go:59 +0x453
go.mondoo.com/cnspec/v11/policy/scan.(*localAssetScanner).runPolicy(0xc0002efd38)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/scan/local_scanner.go:979 +0x549
go.mondoo.com/cnspec/v11/policy/scan.(*localAssetScanner).run(0xc000c83d38)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/scan/local_scanner.go:750 +0x33
go.mondoo.com/cnspec/v11/policy/scan.(*LocalScanner).runMotorizedAsset.func1(0xc000d994c0?, 0xc000e0bec0?)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/scan/local_scanner.go:601 +0x218
go.mondoo.com/cnspec/v11/internal/datalakes/inmemory.WithDb({0x229a8c8?, 0xc000590580?}, 0x3f?, 0xc000e37df8)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/internal/datalakes/inmemory/inmemory.go:52 +0x42
go.mondoo.com/cnspec/v11/policy/scan.(*LocalScanner).runMotorizedAsset(0xc0003951f0?, 0x1fe1566?)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/scan/local_scanner.go:577 +0x65
go.mondoo.com/cnspec/v11/policy/scan.(*LocalScanner).RunAssetJob(0xc000169080, 0xc000e0c700)
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/scan/local_scanner.go:524 +0xab
go.mondoo.com/cnspec/v11/policy/scan.(*LocalScanner).distributeJob.func3()
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/scan/local_scanner.go:450 +0x4c5
created by go.mondoo.com/cnspec/v11/policy/scan.(*LocalScanner).distributeJob in goroutine 1
/go/pkg/mod/go.mondoo.com/cnspec/v11@v11.34.0/policy/scan/local_scanner.go:416 +0x836
```
Signed-off-by: Salim Afiune Maya <afiune@mondoo.com>
Test Results 1 files 27 suites 1m 6s ⏱️ Results for commit 7df4daf. ♻️ This comment has been updated with latest results. |
czunker
reviewed
Dec 27, 2024
Signed-off-by: Salim Afiune Maya <afiune@mondoo.com>
Co-authored-by: Christian Zunker <827818+czunker@users.noreply.github.com>
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jaym
reviewed
Jan 6, 2025
| @@ -501,8 +501,13 @@ func (c *bandedScoreCalculator) Add(score *Score, impact *explorer.Impact) { | |||
|
|
|||
| if score.ScoreCompletion != 0 && score.Weight != 0 { | |||
| category := uint32(0) | |||
| if impact != nil && impact.Value != nil { | |||
| category = 100 - uint32(impact.Value.Value) | |||
| if impact != nil { | |||
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these 2 look the same to me. Am i missing somethng
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i fixed the panic in https://github.com/mondoohq/cnspec/pull/1514/files
jaym
reviewed
Jan 6, 2025
| @@ -590,7 +590,8 @@ func (nodeData *ReportingJobNodeData) score() (*policy.Score, error) { | |||
| if s == nil { | |||
| return nil, nil | |||
| } | |||
| policy.AddSpecdScore(calculator, s, rjRes.score != nil, rjRes.impact) | |||
| i := rjRes.impact | |||
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i don't understand why this makes it safer to access
|
Closing in favor of #1514 |
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We have a number of errors like this one below, I am not 100% sure why we are accessing
an invalid memory address or nil pointer since we are indeed checking the pointers are not
nil but, the only thing I can think of is:
int32touint32and we are overflowing (not likely but I added a check)Note we did not get notified of this panic because of #1525