Error BinExporting #8
Description
After analyzing some Linux binaries with this plugin, they are no longer able to be exported using BinExport, for use with BinDiff. If this plugin is not used during analysis, then they remain exportable.
I haven't debugged this in too much depth, but it appears that at least the net package triggers this, both with the cgo and netgo variant.
Code:
package main
import "net"
func main() {
_, _ = net.Listen("", "")
}Stack trace:
2025-02-25 13:37:00 ERROR (ExportTask) Exception exporting java.lang.UnsupportedOperationException: Storage does not have a stack varnode
at ghidra.program.model.listing.VariableStorage.getStackOffset(VariableStorage.java:510)
at ghidra.program.database.function.VariableDB.getStackOffset(VariableDB.java:310)
at ghidra.program.model.listing.VariableOffset.<init>(VariableOffset.java:78)
at ghidra.program.model.listing.CodeUnitFormat.getVariableReferenceRepresentation(CodeUnitFormat.java:1128)
at ghidra.program.model.listing.CodeUnitFormat.markupScalarWithStackReference(CodeUnitFormat.java:728)
at ghidra.program.model.listing.CodeUnitFormat.performScalarMarkup(CodeUnitFormat.java:529)
at ghidra.program.model.listing.CodeUnitFormat.getOperandRepresentationList(CodeUnitFormat.java:245)
at ghidra.program.model.listing.CodeUnitFormat.getOperandRepresentationString(CodeUnitFormat.java:178)
at com.google.security.binexport.BinExport2Builder.buildInstructionOperands(BinExport2Builder.java:550)
at com.google.security.binexport.BinExport2Builder.buildInstructions(BinExport2Builder.java:669)
at com.google.security.binexport.BinExport2Builder.build(BinExport2Builder.java:1132)
at com.google.security.binexport.BinExportExporter.export(BinExportExporter.java:103)
at ghidra.app.plugin.core.exporter.ExporterDialog$ExportTask.run(ExporterDialog.java:578)
at ghidra.util.task.Task.monitoredRun(Task.java:134)
at ghidra.util.task.TaskRunner.lambda$startTaskThread$0(TaskRunner.java:106)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
at java.base/java.lang.Thread.run(Thread.java:1583)
A simple hello world seems to exhibit a different exception later.
Code:
package main
import "fmt"
func main() {
fmt.Println("hello world")
}Stack trace:
2025-02-25 14:20:00 ERROR (ExportTask) Exception exporting java.lang.NullPointerException: Cannot invoke "ghidra.program.model.listing.Instruction.getAddress()" because "instr" is null
at com.google.security.binexport.BinExport2Builder.getMappedAddress(BinExport2Builder.java:130)
at com.google.security.binexport.BinExport2Builder.buildFlowGraphs(BinExport2Builder.java:773)
at com.google.security.binexport.BinExport2Builder.build(BinExport2Builder.java:1142)
at com.google.security.binexport.BinExportExporter.export(BinExportExporter.java:103)
at ghidra.app.plugin.core.exporter.ExporterDialog$ExportTask.run(ExporterDialog.java:578)
at ghidra.util.task.Task.monitoredRun(Task.java:134)
at ghidra.util.task.TaskRunner.lambda$startTaskThread$0(TaskRunner.java:106)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
at java.base/java.lang.Thread.run(Thread.java:1583)
I'll try to have a look at this myself later as well, though I hope this isn't too niche an issue to look into.
Setup:
Ghidra 11.3.1, Linux official binary release, w/ OpenJDK 21
BinExport at version 12 (latest release) or current latest release from CI (11.1.2 here)
Binaries: as described above. Provided here for convenience.