[Wayland-bugs] [Bug 50669] New: [Regression]Weston failed to start with drm mode based on 64bit OS

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=50669

             Bug #: 50669
           Summary: [Regression]Weston failed to start with drm mode based
                    on 64bit OS
    Classification: Unclassified
           Product: Wayland
           Version: unspecified
          Platform: Other
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: high
         Component: weston
        AssignedTo: wayland-bugs at lists.freedesktop.org
        ReportedBy: shengyanx.zhao at intel.com


System Environment:
--------------------------
Arch:    i386
Libdrm:  (master)2.4.34-2-g481234f2909c0506962a2f42da862da6a9b13fd8
Wayland: (master)0760297633d813c415c068a41558be4ee171d235
Mesa:    (master)8009fca501a021cbaf9b25e01ff3a7793cc2c6cb
Xserver: (master)
xorg-server-1.12.0-194-g78f0d9cdc441a575e15e5f7200ce74750d2f7ad2
Xf86_video_intel: (master) 2.19.0-143-gbc4323558bebd53e474fbc5404e1c41ab16d02e6
Cairo:   (master)dbc0efad7e565558a3abf7f69d7675efddc4688d
Cairo_gl:(master) c0a92bf8329c5a8aee76ac96034435d4fce043dc
Xkbcommon:(master)c87468e926f75fef29e5f6c997d8baa28d8bc8a9
Weston:   (master) 805667388b2f0d0210869daa512598819c7fb1bf
Kernel_unstable: (drm-intel-next-queued)
84bc758124127a5b16b30f9a8bf5f1a981affc6b

Bug detailed description:
-----------------------------
Choose a 64-bit OS, then start weston under drm mode, it will fail with the
following info:

./weston
couldn't open /root/.config/weston.ini
compositor: using new vt /dev/tty3
couldn't open /root/.config/weston.ini
caught segv
  [0000000000406213]  --  (./weston)
  [000000337600f4f0]  --  (/lib64/libpthread.so.0)
  [00000000004079f4]  --  (./weston)
  [0000000000407ba8]  weston_compositor_repick  (./weston)
  [000000000040ad9b]  weston_output_finish_frame  (./weston)
  [00007fbfc0a096fc]  wl_event_loop_dispatch 
(/opt/X11R7/lib/libwayland-server.     so.0)
  [00007fbfc0a079dd]  wl_display_run  (/opt/X11R7/lib/libwayland-server.so.0)
  [0000000000405cac]  --  (./weston)
  [000000337582169d]  __libc_start_main  (/lib64/libc.so.6)
  [0000000000405db5]  --  (./weston)
couldn't open /root/.config/weston.ini
read error: Broken pipe

However, it is normal with the following combinations:
1. 64bit Linux + X mode.
2. 32bit Linux + (X mode or drm mode).

Reproduce steps:
----------------------------
1. Find a 64bit Linux machine.
2. start weston under drm mode.

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