#0  x86_64_fallback_frame_state (context=0x7ffd65b8c1b0, context=0x7ffd65b8c1b0, fs=0x7ffd65b8c2a0) at ./md-unwind-support.h:58
  [Error: md-unwind-support.h was not found in source tree]
#1  uw_frame_state_for (context=context@entry=0x7ffd65b8c1b0, fs=fs@entry=0x7ffd65b8c2a0) at ../../../src/libgcc/unwind-dw2.c:1249
  [Error: unwind-dw2.c was not found in source tree]
#2  0x00007fe56794c618 in _Unwind_Backtrace (trace=0x7fe56900d1a0 <backtrace_helper>, trace_argument=0x7ffd65b8c460) at ../../../src/libgcc/unwind.inc:290
  [Error: unwind.inc was not found in source tree]
#3  0x00007fe56900d316 in __GI___backtrace (array=array@entry=0x7ffd65b8c4a0, size=size@entry=64) at ../sysdeps/x86_64/backtrace.c:109
  104:     ErrorFSigSafe("\n");
  105: }
  106: #else /* HAVE_LIBUNWIND */
  107: #ifdef HAVE_BACKTRACE
  108: #ifndef _GNU_SOURCE
  109: #define _GNU_SOURCE
  110: #endif
  111: #include <dlfcn.h>
  112: #include <execinfo.h>
  113: 
  114: void
#4  0x00005611f706462e in xorg_backtrace () at ../../os/backtrace.c:125
  120:     int size, i;
  121:     Dl_info info;
  122: 
  123:     ErrorFSigSafe("\n");
  124:     ErrorFSigSafe("Backtrace:\n");
  125:     size = backtrace(array, BT_SIZE);
  126:     for (i = 0; i < size; i++) {
  127:         int rc = dladdr(array[i], &info);
  128: 
  129:         if (rc == 0) {
  130:             ErrorFSigSafe("%u: ?? [%p]\n", i, array[i]);
#5  0x00005611f7068999 in OsSigHandler (signo=11, sip=0x7ffd65b8c870, unused=<optimized out>) at ../../os/osinit.c:129
  124:             return;
  125:         }
  126:     }
  127: 
  128:     /* log, cleanup, and abort */
  129:     xorg_backtrace();
  130: 
  131: #ifdef SA_SIGINFO
  132:     if (sip->si_code == SI_USER) {
  133:         ErrorFSigSafe("Received signal %u sent by process %u, uid %u\n", signo,
  134:                      sip->si_pid, sip->si_uid);
#6  <signal handler called>
#7  0x00000000000023f2 in ?? ()
#8  0x00007fe565353b73 in copy_overlap (sna=sna@entry=0x7fe56af26000, alu=<optimized out>, draw=draw@entry=0x7ffd65b8d380, bo=bo@entry=0x5611f8c5eb60, src_dx=src_dx@entry=0, src_dy=<optimized out>, dst_dx=0, dst_dy=0, box=0x7ffd65b8d360, n=1, extents=0x7ffd65b8d0e0) at ../../../src/sna/sna_render.c:2158
  [Error: sna_render.c was not found in source tree]
#9  0x00007fe565358362 in sna_render_copy_boxes__overlap (sna=sna@entry=0x7fe56af26000, alu=<optimized out>, draw=draw@entry=0x7ffd65b8d380, bo=bo@entry=0x5611f8c5eb60, src_dx=src_dx@entry=0, src_dy=src_dy@entry=0, dst_dx=0, dst_dy=0, box=0x7ffd65b8d360, n=1, extents=0x7ffd65b8d0e0) at ../../../src/sna/sna_render.c:2209
  [Error: sna_render.c was not found in source tree]
#10 0x00007fe5653c31af in gen7_render_copy_boxes (sna=0x7fe56af26000, alu=<optimized out>, src=0x7ffd65b8d380, src_bo=0x5611f8c5eb60, src_dx=<optimized out>, src_dy=<optimized out>, dst=0x5611f853f4c0, dst_bo=0x5611f8c5eb60, dst_dx=0, dst_dy=0, box=0x7ffd65b8d360, n=1, flags=17) at ../../../src/sna/gen7_render.c:3005
  [Error: gen7_render.c was not found in source tree]
#11 0x00007fe5653d245f in __sna_dri2_copy_region (sna=0x7fe56af26000, draw=<optimized out>, region=<optimized out>, src=<optimized out>, dst=<optimized out>, flags=2) at ../../../src/sna/sna_dri2.c:1319
  [Error: sna_dri2.c was not found in source tree]
#12 0x00005611f7035bcc in dri2_copy_region (pDraw=pDraw@entry=0x5611f8c52dd0, pRegion=pRegion@entry=0x5611f8bb4360, pDest=0x5611f883d8b0, pSrc=0x5611f8b44fc0) at ../../../../hw/xfree86/dri2/dri2.c:871
  866:     pPriv->swap_count++;
  867: 
  868:     box.x1 = 0;
  869:     box.y1 = 0;
  870:     box.x2 = pDraw->width;
  871:     box.y2 = pDraw->height;
  872:     RegionInit(&region, &box, 0);
  873:     DRI2CopyRegion(pDraw, &region, DRI2BufferFakeFrontLeft,
  874:                    DRI2BufferFrontLeft);
  875: 
  876:     ust = ((CARD64) tv_sec * 1000000) + tv_usec;
#13 0x00005611f70362ee in DRI2CopyRegion (pDraw=0x5611f8c52dd0, pRegion=0x5611f8bb4360, dest=0, src=1) at ../../../../hw/xfree86/dri2/dri2.c:912
  907: DRI2SwapBuffers(ClientPtr client, DrawablePtr pDraw, CARD64 target_msc,
  908:                 CARD64 divisor, CARD64 remainder, CARD64 * swap_target,
  909:                 DRI2SwapEventPtr func, void *data)
  910: {
  911:     DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen);
  912:     DRI2DrawablePtr pPriv;
  913:     DRI2BufferPtr pDestBuffer = NULL, pSrcBuffer = NULL;
  914:     int ret, i;
  915:     CARD64 ust, current_msc;
  916: 
  917:     pPriv = DRI2GetDrawable(pDraw);
#14 0x00005611f70386c3 in ProcDRI2CopyRegion (client=0x5611f89c7f60) at ../../../../hw/xfree86/dri2/dri2ext.c:332
  327:     /* CopyRegion needs to be a round trip to make sure the X server
  328:      * queues the swap buffer rendering commands before the DRI client
  329:      * continues rendering.  The reply has a bitmask to signal the
  330:      * presense of optional return values as well, but we're not using
  331:      * that yet.
  332:      */
  333: 
  334:     rep = (xDRI2CopyRegionReply) {
  335:         .type = X_Reply,
  336:         .sequenceNumber = client->sequence,
  337:         .length = 0
#15 ProcDRI2Dispatch (client=0x5611f89c7f60) at ../../../../hw/xfree86/dri2/dri2ext.c:609
  604:         return ProcDRI2SwapBuffers(client);
  605:     case X_DRI2GetMSC:
  606:         return ProcDRI2GetMSC(client);
  607:     case X_DRI2WaitMSC:
  608:         return ProcDRI2WaitMSC(client);
  609:     case X_DRI2WaitSBC:
  610:         return ProcDRI2WaitSBC(client);
  611:     case X_DRI2SwapInterval:
  612:         return ProcDRI2SwapInterval(client);
  613:     case X_DRI2GetParam:
  614:         return ProcDRI2GetParam(client);
#16 0x00005611f6f0818f in Dispatch () at ../../dix/dispatch.c:432
  427:                 if (result > (maxBigRequestSize << 2))
  428:                     result = BadLength;
  429:                 else {
  430:                     result = XaceHookDispatch(client, client->majorOp);
  431:                     if (result == Success)
  432:                         result =
  433:                             (*client->requestVector[client->majorOp]) (client);
  434:                     XaceHookAuditEnd(client, result);
  435:                 }
  436: #ifdef XSERVER_DTRACE
  437:                 if (XSERVER_REQUEST_DONE_ENABLED())
#17 0x00005611f6f0c34b in dix_main (argc=11, argv=0x7ffd65b8d6a8, envp=<optimized out>) at ../../dix/main.c:298
  293:         pthread_mutex_unlock(&serverRunningMutex);
  294: #endif
  295: 
  296:         NotifyParentProcess();
  297: 
  298:         Dispatch();
  299: 
  300: #ifdef XQUARTZ
  301:         /* Let the other threads know the server is no longer running */
  302:         pthread_mutex_lock(&serverRunningMutex);
  303:         serverRunning = FALSE;
#18 0x00007fe568f178b0 in __libc_start_main (main=0x5611f6ef6690 <main>, argc=11, argv=0x7ffd65b8d6a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd65b8d698) at libc-start.c:291
  [Error: libc-start.c was not found in source tree]
#19 0x00005611f6ef66c9 in _start ()