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https://bugs.launchpad.net/bugs/1680378
Title:
Xmir hangs in mir_buffer_stream_get_graphics_region() from
xmir_input_set_cursor()
Status in Mir:
New
Status in mir package in Ubuntu:
New
Status in xorg-server package in Ubuntu:
Fix Committed
Bug description:
Xmir freezes in mir_buffer_stream_get_graphics_region() from
xmir_input_set_cursor()
Seems to happen a lot when testing Firefox and Chrome when
entering/leaving the address bar...
(gdb) bt
#0 pthread_cond_wait@@GLIBC_2.3.2 ()
at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f5ea91e3c5c in
std::condition_variable::wait(std::unique_lock<std::mutex>&) () from
/usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2 0x00007f5eac25b6b2 in
std::condition_variable::wait<mir::client::PromiseStateBase<std::shared_ptr<mir::client::MirBuffer>
>::ReadLock::ReadLock(mir::client::PromiseStateBase<std::shared_ptr<mir::client::MirBuffer>
>&)::{lambda()#1}>(std::unique_lock<std::mutex>&,
mir::client::PromiseStateBase<std::shared_ptr<mir::client::MirBuffer>
>::ReadLock::ReadLock(mir::client::PromiseStateBase<std::shared_ptr<mir::client::MirBuffer>
>&)::{lambda()#1}) ()
at /usr/include/c++/6/condition_variable:99
#3 __base_ctor (parent=..., this=0x7fff74877420)
at ./src/client/no_tls_future-inl.h:136
#4 mir::client::PromiseStateBase<std::shared_ptr<mir::client::MirBuffer>
>::ensure_read_context() () at ./src/client/no_tls_future-inl.h:152
#5 get_value (this=0x55de6688f830) at ./src/client/no_tls_future-inl.h:223
#6 get (this=0x7f5e9c008160) at ./src/client/no_tls_future-inl.h:354
#7
mir::client::BufferDepository::advance_current_buffer(std::unique_lock<std::mutex>&)
(this=this@entry=0x7f5e9c008160, lk=...)
at ./src/client/buffer_stream.cpp:166
#8 0x00007f5eac25f9ed in current_buffer_id (this=<optimised out>)
at ./src/client/buffer_stream.cpp:183
#9 get_current_buffer (this=0x7f5e9c007f40)
at ./src/client/buffer_stream.cpp:400
#10 0x00007f5eac25f517 in secure_for_cpu_write (this=0x7f5e9c007f40)
at ./src/client/buffer_stream.cpp:419
#11 0x00007f5eac263f28 in mir_buffer_stream_get_graphics_region (
buffer_stream=buffer_stream@entry=0x7f5e9c007f48,
region_out=region_out@entry=0x7fff748775d0)
at ./src/client/mir_buffer_stream_api.cpp:149
#12 0x000055de647da90e in xmir_input_set_cursor (cursor=0x55de6687ff60,
xmir_input=<optimised out>, xmir_input=<optimised out>)
at xmir-cursor.c:108
#13 0x000055de64829eab in miPointerUpdateSprite (pDev=0x55de66621c10)
at mipointer.c:468
#14 0x000055de6482a0fa in miPointerDisplayCursor (pDev=0x55de66621c10,
pScreen=0x55de65c775b0, pCursor=0x55de6687ff60) at mipointer.c:206
#15 0x000055de64816bf1 in CursorDisplayCursor (pDev=0x55de66621c10,
pScreen=0x55de65c775b0, pCursor=0x55de6687ff60) at cursor.c:150
#16 0x000055de6489f4e0 in AnimCurDisplayCursor (pDev=0x55de66621c10,
pScreen=0x55de65c775b0, pCursor=0x55de6687ff60) at animcur.c:220
#17 0x000055de64910cc8 in ChangeToCursor (pDev=0x55de66621c10,
cursor=0x55de6687ff60) at events.c:937
#18 0x000055de64912107 in WindowHasNewCursor (pWin=pWin@entry=0x55de66840be0)
at events.c:3369
#19 0x000055de64939740 in ChangeWindowAttributes (pWin=0x55de66840be0,
vmask=<optimised out>, vlist=vlist@entry=0x55de6690e17c,
client=client@entry=0x55de667e37e0) at window.c:1561
#20 0x000055de64901bed in ProcChangeWindowAttributes (client=0x55de667e37e0)
at dispatch.c:726
#21 0x000055de64907ed5 in Dispatch () at dispatch.c:479
#22 0x000055de6490be58 in dix_main (argc=6, argv=0x7fff74877a58,
envp=<optimised out>) at main.c:287
#23 0x00007f5eaa4bf3f1 in __libc_start_main (main=0x55de647d5f70 <main>,
argc=6, argv=0x7fff74877a58, init=<optimised out>, fini=<optimised out>,
rtld_fini=<optimised out>, stack_end=0x7fff74877a48)
at ../csu/libc-start.c:291
#24 0x000055de647d5faa in _start ()
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