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  1. Qt
  2. QTBUG-86704

(Remote) debugging in conjunction with QProcess not possible (gdbserver: PID mismatch!)

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: Not Evaluated Not Evaluated
    • None
    • 5.15.1
    • Core: Other
    • None
    • - Distribution: Arch Linux
      - QtCreator 4.13.0
      - GDB 9.2
      - GCC 10.2.0
      - Kernel: Linux archlinux 5.8.9-arch2-1
    • Linux/X11

      I have code which must run with root privileges. To be able to debug it with QtCreator I have created a "Kit" with a "Generic Linux Device" in QtCreator, which connects to the localhost with a SSH key as user root.
      My code starts external processes via QProcess. When calling the function start() on my QProcess member variable the debugger ends with the following error message:

      gdbserver: PID mismatch! Expected 1292, got 1286
      gdbserver: Cannot find thread after clone.

      Child exited with status 0

      The code in the attachment is sufficient to trigger the problem.
      With Qt 5.15.0 it is working fine, since 5.15.1 the debugger crashs.

      I have previously reported the bug to the distribution: https://bugs.archlinux.org/task/67904

        1. main.cpp
          0.3 kB
          Matthias Klein
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            thiago Thiago Macieira
            matthias_klein Matthias Klein
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              Created:
              Updated:
              Resolved:

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