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Remote process picking appears to be broken. #13791
Description
Environment
- OS and version: Dev container: Ubuntu 24.04.1 LTS
- VS Code: 1.102.2
- C/C++ extension: 1.26.3
- OS and version of remote machine (if applicable): Application container also running Ubuntu 24.04.1 LTS
- GDB / LLDB version: GNU gdb (Ubuntu 15.0.50.20240403-0ubuntu1) 15.0.50.20240403-git
Bug Summary and Steps to Reproduce
Bug Summary:
remote-attach shows me the error "file name too long: unknown". See logs below.
It seems like it is quoted incorrectly and interpreting the entire string as the executable. I think it would work if the single quotes were removed from /bin/sh -c ...
Debugger Configurations
{
"name": "Remote Attach",
"type": "cppdbg",
"request": "attach",
"program": "/app/myapp",
"pipeTransport": {
"pipeProgram": "kubectl",
"pipeArgs": ["exec", "-i", "${input:pickPod}", "--"],
"debuggerPath": "/usr/bin/gdb"
}
}Debugger Logs
error: Internal error occurred: error executing command in container: failed to exec in container: failed to start exec "0288b51eedf9cbcb9fc25a591c73fa017d196be8409a7e2f91d201265106bf54": OCI runtime exec failed: exec failed: unable to start container process: exec: "/bin/sh -c \"uname && if [ $(uname -o) = \\\"Toybox\\\" ] ; then ps -A -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \\\"Linux\\\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \\\"Darwin\\\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= -c; fi\"": stat /bin/sh -c "uname && if [ $(uname -o) = \"Toybox\" ] ; then ps -A -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \"Linux\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \"Darwin\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= -c; fi": file name too long: unknown
Command failed: "kubectl" "exec" "-i" "myapp-cb4ddbd89-pkt2s" "--" '/bin/sh -c "uname && if [ $(uname -o) = \"Toybox\" ] ; then ps -A -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \"Linux\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \"Darwin\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= -c; fi"'
error: Internal error occurred: error executing command in container: failed to exec in container: failed to start exec "0288b51eedf9cbcb9fc25a591c73fa017d196be8409a7e2f91d201265106bf54": OCI runtime exec failed: exec failed: unable to start container process: exec: "/bin/sh -c \"uname && if [ $(uname -o) = \\\"Toybox\\\" ] ; then ps -A -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \\\"Linux\\\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \\\"Darwin\\\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= -c; fi\"": stat /bin/sh -c "uname && if [ $(uname -o) = \"Toybox\" ] ; then ps -A -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \"Linux\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= ; elif [ $(uname) = \"Darwin\" ] ; then ps axww -o pid=,comm=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,args= -c; fi": file name too long: unknownOther Extensions
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sean-mcmanus commentedon Jul 30, 2025
Matt (@mjrist) Do you know if this is a regression starting with 1.26.3?
sean-mcmanus commentedon Jul 30, 2025
Matt (@mjrist) I don't see any recent change to this area of code: see https://github.com/microsoft/vscode-cpptools/blob/main/Extension/src/Debugger/attachToProcess.ts#L109 .
mjrist commentedon Jul 30, 2025
Doesn't seem like it. Same issue in 1.25.3. Also tried 1.21.6. Like you point out, no recent changes to that code.
If I just run the command from the terminal (bash) I get the same error.
If I remove the single quotes around the command passed to exec, it works (running in the terminal):
mjrist commentedon Jul 30, 2025
Alright, found a work around.
kubectl exec does not like the quoted string, but sh -c is fine with it. If I change my pipe args to
"pipeArgs": ["exec", "-i", "${input:pickPod}", "--", "/bin/sh", "-c"]then it is happy as the string gets passed tosh -cThis does mean that I get an extra process when debugging (not that it matters...)
Using straight kubectl exec it would just start gdb:
Also, I discovered that starting gdb with kubectl exec has the same problem with the quoted command. However using
"quoteArgs": "false"fixes this. It seems to me that if quoteArgs is false the process picker ought to also skip quoting the args. If that were the case, I could just use kubectl exec without additionally invoking sh.sean-mcmanus commentedon Aug 7, 2025
Matt (@mjrist) Your fix is in https://github.com/microsoft/vscode-cpptools/releases/tag/v1.27.0
mjrist commentedon Aug 7, 2025
Thank you!