(gdb) bt full
#0  0x000000000040c55d in pointer_handle_motion (data=0x624220, pointer=0x7c9a20, time=3396170667, sx_w=478464, sy_w=4352) at window.c:2818
        input = 0x624220
        window = 0x7b6ff0
        widget = 0x0
        cursor = 32767
        sx = 1869
        sy = 17
#1  0x0000003440805e90 in ffi_call_unix64 () from /lib64/libffi.so.5
No symbol table info available.
#2  0x00000034408058a0 in ffi_call () from /lib64/libffi.so.5
No symbol table info available.
#3  0x00007ffff52f56a9 in wl_closure_invoke (closure=0x8e1a80, flags=1, target=0x7c9a20, opcode=2, data=0x624220) at connection.c:918
        count = 3
        cif = {abi = FFI_UNIX64, nargs = 5, arg_types = 0x7fffffffded0, rtype = 0x34408062a0, bytes = 0, flags = 0}
        ffi_types = {0x3440806180, 0x3440806180, 0x3440806200, 0x34408061e0, 0x34408061e0, 0x8c2f10, 0x7fffffffdff0, 0x7ffff52f20ff, 0x500000000, 0x7c9810, 
          0x10, 0x7fffffffe000, 0x7fffffffdf40, 0x8c2f10, 0x8e14b0, 0x637460, 0x7ffff639e943, 0x7fffffffdf90, 0x7ffff639e942, 0x0, 0x7fffffffdfb0, 
          0x7ffff52f2c24}
        ffi_args = {0x7fffffffde00, 0x7fffffffde08, 0x8e1a98, 0x8e1aa0, 0x8e1aa8, 0x7fffffffdf20, 0x5ffffde90, 0x7c9810, 0x7fffffffe280, 0x0, 0x0, 
          0x7ffff52f6075, 0x7fffffffdf70, 0x8c2920, 0x7fffffffdf80, 0x7ffff52f20ff, 0x600000030, 0x7b7670, 0x3000000010, 0x0, 0x7fffffffdf00, 0x4059b0}
        implementation = 0x61a7e0
#4  0x00007ffff52f2dd0 in dispatch_event (display=0x61ea00, queue=0x61ea88) at wayland-client.c:853
        closure = 0x8e1a80
        proxy = 0x7c9a20
        opcode = 2
        proxy_destroyed = false
#5  0x00007ffff52f2fe4 in dispatch_queue (display=0x61ea00, queue=0x61ea88) at wayland-client.c:951
        count = 1
#6  0x00007ffff52f32f3 in wl_display_dispatch_queue_pending (display=0x61ea00, queue=0x61ea88) at wayland-client.c:1160
No locals.
#7  0x00007ffff52f3379 in wl_display_dispatch_pending (display=0x61ea00) at wayland-client.c:1242
No locals.
#8  0x0000000000410e0b in display_run (display=0x61e8b0) at window.c:5227
        task = 0x7b7060
        ep = {{events = 1, data = {ptr = 0x61e928, fd = 6416680, u32 = 6416680, u64 = 6416680}}, {events = 0, data = {ptr = 0x7b7060, fd = 8089696, 
              u32 = 8089696, u64 = 8089696}}, {events = 6416560, data = {ptr = 0xffffe0d000000000, fd = 0, u32 = 0, u64 = 18446709782690660352}}, {
            events = 32767, data = {ptr = 0x40e5aa, fd = 4253098, u32 = 4253098, u64 = 4253098}}, {events = 8165920, data = {ptr = 0x7b6ff000000000, fd = 0, 
              u32 = 0, u64 = 34744498718244864}}, {events = 0, data = {ptr = 0x7fffffffe100, fd = -7936, u32 = 4294959360, u64 = 140737488347392}}, {
            events = 4253227, data = {ptr = 0x61e8b000000000, fd = 0, u32 = 0, u64 = 27558915352821760}}, {events = 0, data = {ptr = 0x7b6ff0, fd = 8089584, 
              u32 = 8089584, u64 = 8089584}}, {events = 8091248, data = {ptr = 0x7b705800000000, fd = 0, u32 = 0, u64 = 34744945394843648}}, {events = 0, 
            data = {ptr = 0x7fffffffe120, fd = -7904, u32 = 4294959392, u64 = 140737488347424}}, {events = 4251923, data = {ptr = 0x12c00000000, fd = 0, 
              u32 = 0, u64 = 1288490188800}}, {events = 400, data = {ptr = 0x7b6ff0, fd = 8089584, u32 = 8089584, u64 = 8089584}}, {events = 4294959424, 
            data = {ptr = 0x40e13e00007fff, fd = 32767, u32 = 32767, u64 = 18262054913736703}}, {events = 0, data = {ptr = 0x1900000012c, fd = 300, u32 = 300, 
              u64 = 1717986918700}}, {events = 8090064, data = {ptr = 0xffffe17000000000, fd = 0, u32 = 0, u64 = 18446710469885427712}}, {events = 32767, 
            data = {ptr = 0x4072a8, fd = 4223656, u32 = 4223656, u64 = 4223656}}}
        i = 1
        count = 1
        ret = 140
#9  0x00000000004073ed in main (argc=1, argv=0x7fffffffe288) at subsurfaces.c:786
        display = 0x61e8b0
        app = 0x637a50