** Changed in: mir/0.7
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1372276
Title:
Nested server crashes with SIGSEGV on shutdown in eglDestroyContext()
Status in Mir:
Fix Committed
Status in Mir 0.7 series:
Fix Committed
Status in “mir” package in Ubuntu:
Triaged
Bug description:
Start a host server and nested server. Ctrl+C ... crash.
Test case:
1. sudo -s sh -c "bin/mir_demo_server_minimal -f /tmp/outer & sleep 2 ;
bin/mir_demo_server_shell --host-socket /tmp/outer -f /tmp/inner"
2. Ctrl+C
(gdb) bt
#0 0x00007f9e628cb2e6 in ?? ()
from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1
#1 0x00007f9e628c313a in eglDestroyContext ()
from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1
#2 0x00007f9e6453c9ef in mir::graphics::EGLContextStore::~EGLContextStore (
this=0x113a7a0, __in_chrg=<optimised out>)
at /home/dan/bzr/mir/dev/src/platform/graphics/egl_resources.cpp:40
#3 0x00007f9e648e8b54 in
mir::graphics::SurfacelessEGLContext::~SurfacelessEGLContext (this=0x113a770,
__in_chrg=<optimised out>)
at
/home/dan/bzr/mir/dev/src/server/graphics/surfaceless_egl_context.cpp:175
#4 0x00007f9e648e8ba0 in
mir::graphics::SurfacelessEGLContext::~SurfacelessEGLContext (this=0x113a770,
__in_chrg=<optimised out>)
at
/home/dan/bzr/mir/dev/src/server/graphics/surfaceless_egl_context.cpp:178
#5 0x00007f9e64869032 in
std::default_delete<mir::graphics::GLContext>::operator() (this=0x1255058,
__ptr=0x113a770)
at /usr/include/c++/4.9/bits/unique_ptr.h:76
#6 0x00007f9e648675b3 in std::unique_ptr<mir::graphics::GLContext,
std::default_delete<mir::graphics::GLContext> >::~unique_ptr (this=0x1255058,
__in_chrg=<optimised out>) at /usr/include/c++/4.9/bits/unique_ptr.h:236
#7 0x00007f9e6487598f in mir::scene::GLPixelBuffer::~GLPixelBuffer (
this=0x1255050, __in_chrg=<optimised out>)
at /home/dan/bzr/mir/dev/src/server/scene/gl_pixel_buffer.cpp:66
#8 0x00007f9e648732df in
__gnu_cxx::new_allocator<mir::scene::GLPixelBuffer>::destroy<mir::scene::GLPixelBuffer>
(this=0x1255050, __p=0x1255050)
at /usr/include/c++/4.9/ext/new_allocator.h:124
#9 0x00007f9e64872f4d in
std::allocator_traits<std::allocator<mir::scene::GLPixelBuffer>
>::_S_destroy<mir::scene::GLPixelBuffer> (__a=..., __p=0x1255050)
at /usr/include/c++/4.9/bits/alloc_traits.h:282
#10 0x00007f9e64872b25 in
std::allocator_traits<std::allocator<mir::scene::GLPixelBuffer>
>::destroy<mir::scene::GLPixelBuffer> (__a=..., __p=0x1255050)
at /usr/include/c++/4.9/bits/alloc_traits.h:411
#11 0x00007f9e64871d4f in
std::_Sp_counted_ptr_inplace<mir::scene::GLPixelBuffer,
std::allocator<mir::scene::GLPixelBuffer>,
(__gnu_cxx::_Lock_policy)2>::_M_dispose (this=0x1255040) at
/usr/include/c++/4.9/bits/shared_ptr_base.h:524
#12 0x00007f9e647c7980 in
std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release (this=0x1255040)
at /usr/include/c++/4.9/bits/shared_ptr_base.h:149
#13 0x00007f9e647c76e9 in
std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count
(this=0xf782a0, __in_chrg=<optimised out>)
at /usr/include/c++/4.9/bits/shared_ptr_base.h:666
#14 0x00007f9e64866368 in std::__shared_ptr<mir::scene::PixelBuffer,
(__gnu_cxx::_Lock_policy)2>::~__shared_ptr (this=0xf78298, __in_chrg=<optimised
out>)
at /usr/include/c++/4.9/bits/shared_ptr_base.h:914
#15 0x00007f9e64866382 in
std::shared_ptr<mir::scene::PixelBuffer>::~shared_ptr
(this=0xf78298, __in_chrg=<optimised out>)
at /usr/include/c++/4.9/bits/shared_ptr.h:93
#16 0x00007f9e64892acc in
mir::scene::ThreadedSnapshotStrategy::~ThreadedSnapshotStrategy (this=0xf78290,
__in_chrg=<optimised out>)
at
/home/dan/bzr/mir/dev/src/server/scene/threaded_snapshot_strategy.cpp:122
#17 0x00007f9e6487329b in
__gnu_cxx::new_allocator<mir::scene::ThreadedSnapshotStrategy>::destroy<mir::scene::ThreadedSnapshotStrategy>
(this=0xf78290,
__p=0xf78290) at /usr/include/c++/4.9/ext/new_allocator.h:124
#18 0x00007f9e64872ef5 in
std::allocator_traits<std::allocator<mir::scene::ThreadedSnapshotStrategy>
>::_S_destroy<mir::scene::ThreadedSnapshotStrategy> (
__a=..., __p=0xf78290) at /usr/include/c++/4.9/bits/alloc_traits.h:282
#19 0x00007f9e64872ac1 in
std::allocator_traits<std::allocator<mir::scene::ThreadedSnapshotStrategy>
>::destroy<mir::scene::ThreadedSnapshotStrategy> (
__a=..., __p=0xf78290) at /usr/include/c++/4.9/bits/alloc_traits.h:411
#20 0x00007f9e64871bcf in
std::_Sp_counted_ptr_inplace<mir::scene::ThreadedSnapshotStrategy,
std::allocator<mir::scene::ThreadedSnapshotStrategy>,
(__gnu_cxx::_Lock_policy)2>::_M_dispose (this=0xf78280)
at /usr/include/c++/4.9/bits/shared_ptr_base.h:524
#21 0x00007f9e647c7980 in
std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release (this=0xf78280)
at /usr/include/c++/4.9/bits/shared_ptr_base.h:149
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