[Wayland-bugs] [Bug 79609] VT switching crashes Xwayland and weston

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79609

--- Comment #2 from Boyan Ding <stu_dby at 126.com> ---
I digged a bit more into this issue and discovered the following info, hope it
helps. I built a new version of xwayland with lower level of optimization and
without stripping debug info (The log I post before is somewhat unclear because
of optimization and stripping). Backtrace is as follows:

Program received signal SIGSEGV, Segmentation fault.
0x0000000000491851 in miPointerSetCursorPosition ()
(gdb) bt
#0  0x0000000000491851 in miPointerSetCursorPosition ()
#1  0x000000000050017d in AnimCurSetCursorPosition ()
#2  0x00000000004337bb in pointer_handle_enter ()
#3  0x00007f732e3dcdf0 in ffi_call_unix64 () from /usr/lib/libffi.so.6
#4  0x00007f732e3dc861 in ffi_call () from /usr/lib/libffi.so.6
#5  0x00007f733053651d in ?? () from /usr/lib/libwayland-client.so.0
#6  0x00007f73305338cb in ?? () from /usr/lib/libwayland-client.so.0
#7  0x00007f7330533954 in ?? () from /usr/lib/libwayland-client.so.0
#8  0x00007f7330534684 in wl_display_dispatch_queue_pending ()
   from /usr/lib/libwayland-client.so.0
#9  0x0000000000431bdb in wakeup_handler ()
#10 0x0000000000567d35 in WakeupHandler ()
#11 0x0000000000591137 in WaitForSomething ()
#12 0x000000000056387e in Dispatch ()
#13 0x00000000005672cd in dix_main ()
#14 0x0000000000553d52 in main ()

and the SIGSESV is caused by
       miPointerPtr pPointer = MIPOINTER(pDev); (line 262 of mi/mipointer.c)
where MIPOINTER(pDev) returns 0

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