New subject: [Bug 43217] Wine cannot execute position-independent (PIE) host executables via CreateProcess()

21 Jun 2017


      https://bugs.winehq.org/show_bug.cgi?id=43217
Bug ID: 43217
           Summary: Wine cannot execute position-independent (PIE) host
                    executables via CreateProcess()
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: kernel32
          Assignee: wine-bugs@winehq.org
          Reporter: osmanx@problemloesungsmaschine.de
      Distribution: ---
Created attachment 58504
  --> https://bugs.winehq.org/attachment.cgi?id=58504
script.sh: Test script to reproduce the problem; test.c: Windows program;
hello.c: Host/Linux program
The problem arises from the fact that `create_process_impl()` in
`dlls/kernel32/process.c` ultimately calls `MODULE_get_binary_info()` in
`dlls/kernel32/module.c` which detects PIE exectuables as ELF shared objects
and thus sets `info->type = BINARY_UNIX_LIB;` instead of `info->type =
BINARY_UNIX_EXE;`. I do not have enough knowledge about the precise way that
Winelib apps are implemented or supposed to work, but the fact that PIE
executables are in fact ELF shared objects and not ELF executables according to
the ELF header, causes Wine to detect these as Winelib apps and ultimately
invoke the wrong process creation path.
The problem especially manifests on the just released Debian 9 Stretch because
Debian 9 now uses PIE executables throughout the distribution and these cannot
be started any more from within programs running on Wine. Tested with
winehq-devel packages 2.10 as well as Debian 9 packaged Wine 1.8.7 and 2.0.
Looking at Wine git master, the relevant code paths have not changed at all for
quite some time, thus this very likely also applies to all other Wine versions
as well. Non-PIE executables work fine.
Test script (script.sh) to reproduce the problem as well as output of the test
script attached.
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[Bug 43217] New: Wine cannot execute position-independent (PIE) host executables via CreateProcess()