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panic: runtime error: invalid memory address or nil pointer dereference when listing firmwares #141

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status: waiting for informationMore information must be provided before work can proceed topic: codeRelated to content of the project itself type: imperfectionPerceived defect in any part of project
@kittaakos

Description

Describe the problem

This happened in the Arduino IDE. See the original comment here.

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x14bd30e]
goroutine 1 [running]:
github.com/arduino/arduino-fwuploader/cli/firmware.list(0x0, 0x0)
	/home/runner/work/arduino-fwuploader/arduino-fwuploader/cli/firmware/list.go:66 +0x4e
github.com/arduino/arduino-fwuploader/cli/firmware.newListCommand.func1(0xc000492500, 0xc000158ea0, 0x0, 0x2)
	/home/runner/work/arduino-fwuploader/arduino-fwuploader/cli/firmware/list.go:42 +0x39
github.com/spf13/cobra.(*Command).execute(0xc000492500, 0xc000158e80, 0x2, 0x2, 0xc000492500, 0xc000158e80)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.3/command.go:856 +0x2c2
github.com/spf13/cobra.(*Command).ExecuteC(0xc0001eb900, 0x0, 0x0, 0x1501260)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.3/command.go:960 +0x375
github.com/spf13/cobra.(*Command).Execute(...)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.3/command.go:897
main.main()
	/home/runner/work/arduino-fwuploader/arduino-fwuploader/main.go:35 +0x3c Error: Error executing "/Users/a.kitta/dev/git/arduino-ide/arduino-ide-extension/build/arduino-fwuploader" firmware list --format json: unexpected end of JSON input
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x14bd30e]
goroutine 1 [running]:
github.com/arduino/arduino-fwuploader/cli/firmware.list(0x0, 0x0)
	/home/runner/work/arduino-fwuploader/arduino-fwuploader/cli/firmware/list.go:66 +0x4e
github.com/arduino/arduino-fwuploader/cli/firmware.newListCommand.func1(0xc000492500, 0xc000158ea0, 0x0, 0x2)
	/home/runner/work/arduino-fwuploader/arduino-fwuploader/cli/firmware/list.go:42 +0x39
github.com/spf13/cobra.(*Command).execute(0xc000492500, 0xc000158e80, 0x2, 0x2, 0xc000492500, 0xc000158e80)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.3/command.go:856 +0x2c2
github.com/spf13/cobra.(*Command).ExecuteC(0xc0001eb900, 0x0, 0x0, 0x1501260)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.3/command.go:960 +0x375
github.com/spf13/cobra.(*Command).Execute(...)
	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.1.3/command.go:897
main.main()
	/home/runner/work/arduino-fwuploader/arduino-fwuploader/main.go:35 +0x3c
 at ChildProcess.<anonymous> (/Users/a.kitta/dev/git/arduino-ide/arduino-ide-extension/lib/node/exec-util.js:53:31)
 at ChildProcess.emit (node:events:394:28)
 at Process.ChildProcess._handle.onexit (node:internal/child_process:290:12)
 at Process.callbackTrampoline (node:internal/async_hooks:130:17)

To reproduce

I do not have a straightforward way to reproduce the defect, but as noted here, the firmware updater returns with an invalid JSON occasionally.

Click to expand the invalid JSON 
[
 {
 "board_name": "Arduino MKR1000",
 "board_fqbn": "arduino:samd:mkr1000",
 "module": "WINC1500",
 "firmware_version": "19.4.4",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR1000",
 "board_fqbn": "arduino:samd:mkr1000",
 "module": "WINC1500",
 "firmware_version": "19.5.2",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR1000",
 "board_fqbn": "arduino:samd:mkr1000",
 "module": "WINC1500",
 "firmware_version": "19.5.4",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR1000",
 "board_fqbn": "arduino:samd:mkr1000",
 "module": "WINC1500",
 "firmware_version": "19.6.1",
 "Latest": true
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.0.0",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.1.0",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.2.1",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.2.2",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.2.3",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.2.4",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.3.0",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.0",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.1",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.2",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.3",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.4",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.5",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.6",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.7",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR WiFi 1010",
 "board_fqbn": "arduino:samd:mkrwifi1010",
 "module": "NINA",
 "firmware_version": "1.4.8",
 "Latest": true
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.0.0",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.1.0",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.2.1",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.2.2",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.2.3",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.2.4",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.3.0",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.0",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.1",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.2",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.3",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.4",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.5",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.6",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.7",
 "Latest": false
 },
 {
 "board_name": "Arduino NANO 33 IoT",
 "board_fqbn": "arduino:samd:nano_33_iot",
 "module": "NINA",
 "firmware_version": "1.4.8",
 "Latest": true
 },
 {
 "board_name": "Arduino MKR Vidor 4000",
 "board_fqbn": "arduino:samd:mkrvidor4000",
 "module": "NINA",
 "firmware_version": "1.0.0",
 "Latest": false
 },
 {
 "board_name": "Arduino MKR Vidor 4000",
 "board_fqbn": "arduino:samd:mkrvidor4000",
 "module": "NINA",
 "firmware_version": "1.1.0",
 "Latest": true
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.2.1",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.2.2",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.2.3",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.2.4",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.3.0",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.4.0",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.4.1",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.4.2",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "firmware_version": "1.4.3",
 "Latest": false
 },
 {
 "board_name": "Arduino Uno WiFi Rev2",
 "board_fqbn": "arduino:megaavr:uno2018",
 "module": "NINA",
 "f

Expected behavior

No error.

Arduino Firmware Uploader version

arduino-fwuploader Version: 2.0.0 Commit: eb51bf2 Date: 2021年07月28日T16:19:28Z

Operating system

macOS

Operating system version

12.3.1 (21E258)

Additional context

I could not reproduce the bug. The latest and 2.0.0 versions worked when I executed the following command in a terminal.

./arduino-fwuploader firmware list --format json

But it happened multiple times in the IDE. I do not know where the null pointer exception comes from.

Issue checklist

  • I searched for previous reports in the issue tracker
  • I verified the problem still occurs when using the latest version
  • My report contains all necessary details

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