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Message #25896
[Bug 1372276] Re: Nested server crashes with SIGSEGV on shutdown in eglDestroyContext()
This bug was fixed in the package mir - 0.8.0+14.10.20141005-0ubuntu1
---------------
mir (0.8.0+14.10.20141005-0ubuntu1) 14.09; urgency=medium
[ Daniel van Vugt ]
* New upstream release 0.8.0 (https://launchpad.net/mir/+milestone/0.8.0)
- Enhancements:
. Less sensitivity to ABI breaks - many headers unused by external
projects are now hidden and not installed by -dev packaes. If you
require any headers that are missing, just ask.
. Touchspots: --enable-touchspots to servers; visually shows touch
locations (warning: This affects performance LP: #1373692).
. Client performance reporting: Any Mir client can now get accurate
performance information (frame rate, render time, buffer lag etc)
logged to stdout. Just set env MIR_CLIENT_PERF_REPORT=log
. Further improved touch responsiveness, with less lag and smoother
scrolling (so long as you don't enable touchspots).
. Slightly faster builds using precompiled headers.
. Turn hardware overlays on by default. When in use, this halves the
CPU usage of a Mir server. Already enabled in unity-system-compositor.
. More scripting to detect ABI breaks.
. Improved src/ tree consistency (renamed "src/shared" to "src/common").
. Improved fatal signal design: Changed from SIGTERM to SIGHUP delivered
to clients on unexpected server disconnection.
. Improved library/package design to allow concurrent installations
of different Mir versions without conflicts.
. Fd reception code is now common to client and server.
- ABI summary: Servers need rebuilding, but clients do not;
. Mirclient ABI unchanged at 8
. Mircommon ABI bumped to 2
. Mirplatform ABI bumped to 3
. Mirserver ABI bumped to 26
- API changes between Mir 0.7 and 0.8:
. Lots of headers removed from the public SDK! We have only hidden
headers not known to be used by any known projects. Please let us
know if anything is missing - https://bugs.launchpad.net/mir/+filebug
. graphics::Platform - interface changed significantly.
. Lots of server API changes to support touchspots.
. File descriptors now passed as type Fd instead of int32_t.
- Bug fixes:
. [regression] Mir deb packages with versioned names cannot be installed
simultaneously any more (LP: #1293944)
. A frozen client can hang the whole server (LP: #1350207)
. QtMir FTBFS: fatal error: mir/input/input_channel.h: No such file or
directory (LP: #1365934)
. [regression] platform-api fails to build against Mir 0.8 (LP: #1368354)
. Mir FTBFS with gcc 4.9.1-14 (utopic update):
auto_unblock_thread.h:44:46: error: no matching function for call to
‘std::thread::thread(<brace-enclosed initializer list>)’ (LP: #1369389)
. [regression] Compositing is jerky and stutters during touch events
(LP: #1372850)
. unit test fails: AndroidInputReceiverSetup.slow_raw_input_doesnt_cause_
frameskipping (LP: #1373826)
. intermittent hang in TestClientInput (LP: #1338612)
. TestClientInput.scene_obscure_motion_events_by_stacking fails
intermittently (LP: #1361757)
. [regression] First frame is composited as black (even though the client
has provided a non-black frame) (LP: #1362444)
. Some mali drivers crash after repeatedly creating/destroying the mir
compositor threads (LP: #1362841)
. [android] SIGTERM to server with connected client causes crash
(LP: #1364637)
. [regression] acceptance tests fails in
ServerDisconnect.causes_client_to_terminate_by_default (LP: #1364772)
. [regression] symbol lookup error:
/usr/lib/arm-linux-gnueabihf/libmirserver.so.24: undefined symbol:
_ZTIN7android7RefBaseE (libmirserver 0.6.1 doesn't work with
libmircommon 0.7.0) (LP: #1364890)
. [regression] Mir FTBFS with g++-4.8 [error: ISO C++ forbids casting
between pointer-to-function and pointer-to-object] (LP: #1366134)
. Intermittent CI failure in DemoPrivateProtobuf.client_calls_server
(LP: #1367353)
. Overly strict libmirplatform* dependencies are blocking CI
(LP: #1370866)
. [regression] mir demo servers segfault on shutdown (LP: #1371619)
. Nested server crashes with SIGSEGV on shutdown in eglDestroyContext()
(LP: #1372276)
. [regression] Moving/resizing clients in a nested server is very
jerky/stuttery (LP: #1372300)
. [regression] Bypass/overlays are toggling constantly (LP: #1373689)
. [regression] Mir server uses too much CPU during touch scrolling
(LP: #1373809)
. Intermittent test failures in TestClientCursorAPI.* (LP: #1342567)
. clang emits lots of warnings about lttng headers (LP: #1348472)
. [enhancement] Draw input event location (LP: #1323522)
. demo shell: Keep colours consistent, regardless of the physical pixel
format of your framebuffer (LP: #1375660)
. tests: Fix SharedLibraryProber test runs on i386. (LP: #1375829)
. Touchspots rendered as squares on some devices (LP: #1373698)
. The headers needed to use features shown in the acceptance tests are
not published (LP: #1375301)
. update-all-ABI-sha1sums.sh and install_on_android.sh are no longer
executable. (LP: #1376547)
-- Ubuntu daily release <ps-jenkins@xxxxxxxxxxxxxxxxxxx> Sun, 05 Oct 2014 00:41:28 +0000
** Changed in: mir (Ubuntu RTM)
Status: Triaged => Fix Released
--
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https://bugs.launchpad.net/bugs/1372276
Title:
Nested server crashes with SIGSEGV on shutdown in eglDestroyContext()
Status in Mir:
Fix Released
Status in Mir 0.7 series:
Fix Released
Status in “mir” package in Ubuntu:
Fix Released
Status in “mir” package in Ubuntu RTM:
Fix Released
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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