Mir-on-X mir_proving_server crashes with SIGSEGV on shutdown or just when 'mir_demo_client_egltriangle -n' connects (which causes shutdown?)

[Daniel van Vugt]

Mir-on-X mir_proving_server crashes with SIGSEGV on shutdown or just when 'mir_demo_client_egltriangle -n' connects (which causes shutdown?)

==2601== Process terminating with default action of signal 11 (SIGSEGV)
==2601== Access not within mapped region at address 0xCD8E430
==2601== at 0x650DC3B: ??? (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21)
==2601== by 0x650E1BE: __gxx_personality_v0 (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21)
==2601== by 0x6B1C262: _Unwind_RaiseException (in /lib/x86_64-linux-gnu/libgcc_s.so.1)
==2601== by 0x6B1C56C: _Unwind_Resume_or_Rethrow (in /lib/x86_64-linux-gnu/libgcc_s.so.1)
==2601== by 0x650E95B: __cxa_rethrow (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21)
==2601== by 0x4E96696: mir::report_exception(std::ostream&) (report_exception.cpp:30)
==2601== by 0x4736ED: main (demo_shell.cpp:118)

and then using --on-fatal-error-abort to work around the above uselessness:

(gdb) bt
#0 0x00007f0f33ef25a9 in malloc_consolidate (
    av=av@entry=0x7f0f34237b20 <main_arena>) at malloc.c:4176
#1 0x00007f0f33ef41e8 in _int_free (av=0x7f0f34237b20 <main_arena>,
    p=<optimised out>, have_lock=0) at malloc.c:4076
#2 0x00007f0f33ef7abc in __GI___libc_free (mem=<optimised out>)
    at malloc.c:2969
#3 0x00007f0f2cef90bd in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4 0x00007f0f2cef90bd in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5 0x00007f0f2cef90bd in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#6 0x00007f0f2cef90bd in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#7 0x00007f0f2d003ed7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#8 0x00007f0f2cf6cf1f in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#9 0x00007f0f31dbc2d3 in ?? ()
   from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1
#10 0x00007f0f31db271d in eglTerminate ()
   from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1
#11 0x00007f0f2d7e46f9 in ?? ()
   from /usr/lib/x86_64-linux-gnu/mir/server-platform/server-mesa-x11.so.8
#12 0x00007f0f33bd171a in ?? ()
   from /usr/lib/x86_64-linux-gnu/libmirserver.so.38
#13 0x00007f0f33b8316e in ?? ()
   from /usr/lib/x86_64-linux-gnu/libmirserver.so.38
#14 0x00007f0f33bd171a in ?? ()
   from /usr/lib/x86_64-linux-gnu/libmirserver.so.38
#15 0x00007f0f33bbc074 in mir::shell::AbstractShell::~AbstractShell() ()
   from /usr/lib/x86_64-linux-gnu/libmirserver.so.38
#16 0x00000000004213a9 in ?? ()
#17 0x0000000000422c36 in ?? ()
#18 0x000000000041402d in main ()

[Michał Sawicz (saviq)]

Syncing task from Mir.