[Bug 1812861] Re: QEMU in user-mode emulation mode crashes when the user program jumps to an invalid address

[Peter Maydell]

I'm not sure exactly when we fixed this (the fix is probably in the 4.1
release) but as of current head-of-git this correctly generates the
SIGSEGV.


** Changed in: qemu
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1812861

Title:
  QEMU in user-mode emulation mode crashes when the user program jumps
  to an invalid address

Status in QEMU:
  Fix Committed

Bug description:
  Running this code:

  void (*func)() = 0x12345678;

  int main()
  {
      func();
      return 0;
  }

  Produces the following output:

  qemu-arm-static: /build/qemu-DqynNa/qemu-2.8+dfsg/translate-all.c:175: 
tb_lock: Assertion `!have_tb_lock' failed.
  qemu-arm-static: /build/qemu-DqynNa/qemu-2.8+dfsg/translate-all.c:175: 
tb_lock: Assertion `!have_tb_lock' failed.
  Segmentation fault

  The expected result is as follows:

  qemu: uncaught target signal 11 (Segmentation fault) - core dumped
  Segmentation fault

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