panic runtime SIGSEGV (with an invalid template)

[NN---]

Description

Mac M4

Using the following configuration:

With
LIMA_SSH_PORT_FORWARDER=false

portForwards:
  - guestSocket: "tcp:2222"
    hostSocket: "tcp:2222"    

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x80 pc=0x10553b134]

goroutine 1 [running]:
main.shellAction(0x14000675808, {0x1400066f6e0?, 0x4?, 0x1055544c7?})
	/private/tmp/lima-20241227-4789-ev5r3o/lima-1.0.3/cmd/limactl/shell.go:94 +0x3c4
github.com/spf13/cobra.(*Command).execute(0x14000675808, {0x1400066f6b0, 0x1, 0x1})
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.8.1/command.go:985 +0x834
github.com/spf13/cobra.(*Command).ExecuteC(0x14000674c08)
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.8.1/command.go:1117 +0x344
github.com/spf13/cobra.(*Command).Execute(...)
	/Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/cobra@v1.8.1/command.go:1041
main.main()
	/private/tmp/lima-20241227-4789-ev5r3o/lima-1.0.3/cmd/limactl/main.go:28 +0x20

[jandubois]

portForwards:
  - guestSocket: "tcp:2222"
    hostSocket: "tcp:2222"

This is wrong, the guestSocket and hostSocket properties should contains names of unix sockets, and not include the protocol name at all.

portForwards:
- guestPort: 2222
  hostPort: 2222

Please leave the issue open; limactl should not panic, regardless of the input data. It should produce meaningful validation errors instead.

[olamilekan000]

I've been trying to reproduce this but to no avail. Can you kindly provide more contexts in terms of the command your ran or any other thing you think might help?
Thanks @NN---

[jandubois]

I cannot reproduce this:

FATA[0025] the YAML is invalid, saved the buffer as "lima.REJECTED.yaml": field `portForwards[0].guestSocket` must be an absolute path, but is "tcp:2222"

[NN---]

I no longer need this configuration, the automatic port forwarding works for me too.
So closing for now.