#0  0x00007f52bfb6dcc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 1407
        selftid = 1407
#1  0x00007f52bfb710d8 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7ffc2ee56f88, sa_sigaction = 0x7ffc2ee56f88}, sa_mask = {__val = {1958, 140721095273864, 139993410053463, 5, 0, 0, 139993380281640, 139993312244410, 
              140721095273864, 139993411416064, 139993410082069, 0, 139993380478864, 94744385755072, 140721095273664, 0}}, sa_flags = -1046968128, sa_restorer = 0x7f52c19888c0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x0000562b654c28ee in OsAbort () at ../../os/utils.c:1342
No locals.
#3  0x0000562b654c7f93 in AbortServer () at ../../os/log.c:807
No locals.
#4  0x0000562b654c8d88 in FatalError (f=f@entry=0x7f52bba5b2ba "%s:%d assertion '%s' failed\n") at ../../os/log.c:945
        args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7ffc2ee56e70, reg_save_area = 0x7ffc2ee56da0}}
        args2 = {{gp_offset = 8, fp_offset = 48, overflow_arg_area = 0x7ffc2ee56e70, reg_save_area = 0x7ffc2ee56da0}}
        beenhere = 1
#5  0x00007f52bba0fb02 in sna_dri2_schedule_flip (data=0x562b66752a60, func=0x562b65490c30 <DRI2SwapEvent>, current_msc=1958, target_msc=0x7ffc2ee56f88, immediate=true, back=0x562b66a3f9c0, 
    front=0x562b666c2290, crtc=0x562b66313030, draw=0x562b66752a60, client=0x562b667241c0) at ../../../src/sna/sna_dri2.c:3078
        signal = false
        info = <optimized out>
#6  sna_dri2_schedule_swap (client=0x562b667241c0, draw=0x562b66752a60, front=0x562b666c2290, back=0x562b66a3f9c0, target_msc=0x7ffc2ee56f88, divisor=<optimized out>, remainder=0, 
    func=0x562b65490c30 <DRI2SwapEvent>, data=0x562b66752a60) at ../../../src/sna/sna_dri2.c:3314
        crtc = 0x562b66313030
        info = 0x0
        type = 1
        current_msc = 1958
        __func__ = "sna_dri2_schedule_swap"
#7  0x0000562b6548fd00 in DRI2SwapBuffers (client=client@entry=0x562b667241c0, pDraw=0x562b66752a60, target_msc=1952, divisor=0, remainder=<optimized out>, swap_target=swap_target@entry=0x7ffc2ee57018, 
    func=func@entry=0x562b65490c30 <DRI2SwapEvent>, data=0x562b66752a60) at ../../../../hw/xfree86/dri2/dri2.c:1163
        pScreen = 0x562b66310ca0
        pPriv = 0x562b6651b8d0
        pDestBuffer = 0x562b666c2290
        pSrcBuffer = <optimized out>
        ret = <optimized out>
        i = <optimized out>
        ust = 33991610
        current_msc = 1958
        __func__ = "DRI2SwapBuffers"
#8  0x0000562b654915d3 in ProcDRI2SwapBuffers (client=0x562b667241c0) at ../../../../hw/xfree86/dri2/dri2ext.c:416
        rep = {type = 1 '\001', pad1 = 0 '\000', sequenceNumber = 9693, length = 0, swap_hi = 0, swap_lo = 0, pad2 = 0, pad3 = 0, pad4 = 0, pad5 = 0}
        swap_target = 189
        status = <optimized out>
        stuff = 0x562b66773ab0
        pDrawable = 0x562b66752a60
#9  ProcDRI2Dispatch (client=0x562b667241c0) at ../../../../hw/xfree86/dri2/dri2ext.c:613
        stuff = 0x562b66773ab0
#10 0x0000562b6536f33e in Dispatch () at ../../dix/dispatch.c:432
        clientReady = 0x562b666b0a60
        result = <optimized out>
        client = 0x562b667241c0
        nready = 0
        icheck = 0x562b65753290 <checkForInput>
        start_tick = 700
#11 0x0000562b6537318b in dix_main (argc=13, argv=0x7ffc2ee57218, envp=<optimized out>) at ../../dix/main.c:298
        i = <optimized out>
        alwaysCheckForInput = {0, 1}
---Type <return> to continue, or q <return> to quit---
#12 0x00007f52bfb58ec5 in __libc_start_main (main=0x562b6535e6e0 <main>, argc=13, argv=0x7ffc2ee57218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc2ee57208)
    at libc-start.c:287
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -6623024061787234634, 94744381613797, 140721095275024, 0, 0, 6624257932392308406, 6535626719875079862}, mask_was_saved = 0}}, priv = {pad = {0x0, 
              0x0, 0x562b654cc870 <__libc_csu_init>, 0x7ffc2ee57218}, data = {prev = 0x0, cleanup = 0x0, canceltype = 1699530864}}}
        not_first_call = <optimized out>
#13 0x0000562b6535e70e in _start ()
No symbol table info available.