#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f9034a6ef48 in _L_lock_9627 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f9034a6d331 in __libc_free (mem=0x7f9034d75e60) at malloc.c:3736
#3  0x000000000046ccc2 in _XSERVTransFreeConnInfo (ciptr=0x1f95e90) at /usr/include/X11/Xtrans/Xtrans.c:138
#4  0x000000000046d144 in _XSERVTransClose (ciptr=0x1f95e90) at /usr/include/X11/Xtrans/Xtrans.c:930
#5  0x000000000046222f in CloseWellKnownConnections () at ../../os/connection.c:493
#6  0x0000000000464ca9 in AbortServer () at ../../os/log.c:411
#7  0x0000000000464ec5 in FatalError (f=0x57b930 "Caught signal %d (%s). Server aborting\n") at ../../os/log.c:540
#8  0x0000000000465c2e in OsSigHandler (signo=11, sip=<value optimized out>, unused=<value optimized out>) at ../../os/osinit.c:153
#9  OsSigHandler (signo=11, sip=<value optimized out>, unused=<value optimized out>) at ../../os/osinit.c:115
#10 <signal handler called>
#11 _int_malloc (av=0x7f9034d75e60, bytes=6921600) at malloc.c:4709
#12 0x00007f9034a6d420 in __libc_malloc (bytes=6921600) at malloc.c:3660
#13 0x00007f9032523244 in exaPrepareAccessReg_mixed (pPixmap=0x2c70ab0, index=0, pReg=0x0) at ../../exa/exa_migration_mixed.c:203
#14 0x00007f903252d0e6 in ExaCheckPolylines (pDrawable=0x2c70ab0, pGC=0x249cac0, mode=0, npt=5, ppt=<value optimized out>) at ../../exa/exa_unaccel.c:264
#15 0x0000000000555078 in miPolyRectangle (pDraw=0x2c70ab0, pGC=0x249cac0, nrects=<value optimized out>, pRects=<value optimized out>) at ../../mi/mipolyrect.c:183
#16 0x00000000004de645 in damagePolyRectangle (pDrawable=0x2c70ab0, pGC=0x249cac0, nRects=1, pRects=0x37c7a84) at ../../../miext/damage/damage.c:1206
#17 0x000000000042f5d3 in ProcPolyRectangle (client=0x3a2e0e0) at ../../dix/dispatch.c:1787
#18 0x0000000000432e99 in Dispatch () at ../../dix/dispatch.c:431
#19 0x0000000000426fae in main (argc=8, argv=<value optimized out>, envp=<value optimized out>) at ../../dix/main.c:287