touchscreen input crashes X - XI2 double free in DeactivatePointerGrab
original bug report to gtk+ https://gitlab.gnome.org/GNOME/gtk/issues/1389
Edit 2019-05-08
after using gdb to trace this bug it is caused by a double free (FreeGrab is called twice on the same grab) in /dix/events.c: DeactivatePointerGrab
DeactivatePointerGrab(DeviceIntPtr mouse)
{
GrabPtr grab = mouse->deviceGrab.grab;
DeviceIntPtr dev;
Bool wasPassive = mouse->deviceGrab.fromPassiveGrab;
Bool wasImplicit = (mouse->deviceGrab.fromPassiveGrab &&
mouse->deviceGrab.implicitGrab);
XID grab_resource = grab->resource;
int i;
/* If an explicit grab was deactivated, we must remove it from the
head of
* all the touches' listener lists. */
for (i = 0; !wasPassive && mouse->touch && i <
mouse->touch->num_touches; i++) {
TouchPointInfoPtr ti = mouse->touch->touches + i;
if (ti->active && TouchResourceIsOwner(ti, grab_resource)) {
int mode = XIRejectTouch;
/* Rejecting will generate a TouchEnd, but we must not
emulate a ButtonRelease here. So pretend the listener
already has the end event */
if (grab->grabtype == CORE || grab->grabtype == XI ||
!xi2mask_isset(mouse->deviceGrab.grab->xi2mask, mouse, XI_TouchBegin)) {
mode = XIAcceptTouch;
/* NOTE: we set the state here, but
* ProcessTouchOwnershipEvent() will still call
* TouchEmitTouchEnd for this listener. The other half of
* this hack is in DeliverTouchEndEvent */
ti->listeners[0].state = LISTENER_HAS_END;
}
>>>> TouchListenerAcceptReject(mouse, ti, 0, mode);
}
}
TouchRemovePointerGrab(mouse);
mouse->valuator->motionHintWindow = NullWindow;
mouse->deviceGrab.grab = NullGrab;
mouse->deviceGrab.sync.state = NOT_GRABBED;
mouse->deviceGrab.fromPassiveGrab = FALSE;
for (dev = inputInfo.devices; dev; dev = dev->next) {
if (dev->deviceGrab.sync.other == grab)
dev->deviceGrab.sync.other = NullGrab;
}
DoEnterLeaveEvents(mouse, mouse->id, grab->window,
mouse->spriteInfo->sprite->win, NotifyUngrab);
if (grab->confineTo)
ConfineCursorToWindow(mouse, GetCurrentRootWindow(mouse),
FALSE, FALSE);
PostNewCursor(mouse);
if (!wasImplicit && grab->grabtype == XI2)
ReattachToOldMaster(mouse);
ComputeFreezes();
>>FreeGrab(grab);
}in one of the loop iterations TouchListenerAcceptReject() frees the grab and allocates a new grab at mouse->deviceGrab.grab however grab is not updated leading to a double free in FreeGrab(grab).
gdb logs of the double free.
Thread 1 "Xorg" hit Breakpoint 1, FreeGrab (pGrab=0x5578f7701910) at
../xorg-server-1.20.4/dix/grabs.c:255
255 BUG_RETURN(!pGrab);
#0 0x00005578f49f705d in FreeGrab (pGrab=0x5578f7701910) at
../xorg-server-1.20.4/dix/grabs.c:255
__func__ = "FreeGrab"
#1 0x00005578f49e0c6e in ActivatePointerGrab (mouse=0x5578f7198210,
grab=0x5578f76e44c0, time=..., autoGrab=129) at
../xorg-server-1.20.4/dix/events.c:1547
grabinfo = 0x5578f7198260
oldgrab = 0x5578f7701910
oldWin = 0x5578f765b2d0
isPassive = 1
#2 0x00005578f49e2009 in ActivateImplicitGrab (dev=0x5578f7198210,
client=0x5578f7429b70, win=0x5578f75d4d00, event=0x5578f736fbd0,
deliveryMask=12222716)
at ../xorg-server-1.20.4/dix/events.c:2069
tempGrab = 0x5578f76e44c0
inputMasks = 0x0
type = 4 '\004'
grabtype = CORE
#3 0x00005578f49e2797 in DeliverEventsToWindow (pDev=0x5578f7198210,
pWin=0x5578f75d4d00, pEvents=0x5578f736fbd0, count=1, filter=4, grab=0x0)
at ../xorg-server-1.20.4/dix/events.c:2300
deliveries = 1
nondeliveries = 0
client = 0x5578f7429b70
deliveryMask = 12222716
type = 4
#4 0x00005578f49e371f in DeliverEvent (dev=0x5578f7198210,
xE=0x5578f736fbd0, count=1, win=0x5578f75d4d00, child=0, grab=0x0)
at ../xorg-server-1.20.4/dix/events.c:2649
pSprite = 0x5578f71c9880
filter = 4
deliveries = 0
#5 0x00005578f49e3808 in DeliverOneEvent (event=0x7ffe485ae870,
dev=0x5578f7198210, level=CORE, win=0x5578f75d4d00, child=0, grab=0x0)
at ../xorg-server-1.20.4/dix/events.c:2681
xE = 0x5578f736fbd0
count = 1
deliveries = 0
rc = 0
__func__ = "DeliverOneEvent"
#6 0x00005578f49e39c8 in DeliverDeviceEvents (pWin=0x5578f75d4d00,
event=0x7ffe485ae870, grab=0x0, stopAt=0x5578f75d4d00, dev=0x5578f7198210)
at ../xorg-server-1.20.4/dix/events.c:2740
child = 0
deliveries = 0
mask = 2
#7 0x00005578f4aa22b7 in DeliverTouchEmulatedEvent
(dev=0x5578f7198210, ti=0x5578f7702640, ev=0x5578f7703900,
listener=0x5578f76cf770, client=0x5578f7429b70, win=0x5578f75d4d00,
grab=0x0, xi2mask=0x0)
at ../xorg-server-1.20.4/Xi/exevents.c:1437
devgrab = 0x5578f7701910
sprite_win = 0x5578f75d4d00
motion =
{any = {header = 255 '\377', type = ET_Motion, length =
432, time = 15484702}, device_event = {header = 255 '\377', type =
ET_Motion, length = 432, time = 15484702, deviceid = 2, sourceid = 13,
detail = {button = 0, key = 0}, touchid = 1, root_x = 420, root_x_frac =
0.71519953, root_y = 23, root_y_frac = 0.612341404, buttons = '\000'
<repeats 31 times>, valuators = {mask = "\003\000\000\000", mode =
"\003\000\000\000", data = {14360.412144323849, 1432.8318584070796, 0
<repeats 34 times>}}, mods = {base = 0, latched = 0, locked = 16,
effective = 16}, group = {base = 0 '\000', latched = 0 '\000', locked =
0 '\000', effective = 0 '\000'}, root = 362, corestate = 16, key_repeat
= 0, flags = 65536, resource = 56623224, source_type =
EVENT_SOURCE_NORMAL}, changed_event = {header = 255 '\377', type =
ET_Motion, length = 432, time = 15484702, deviceid = 2, flags = 13,
masterid = 0, sourceid = 1, buttons = {num_buttons = 420, names =
{1060575057, 23, 1058849384, 0, 0, 0, 0, 0, 0, 0, 0, 3, 768, 0, 0,
3240438805, 1087114292, 3534796093, 1083597651, 0 <repeats 70 times>,
16, 16, 0, 362, 16, 0, 65536, 56623224, 0 <repeats 75 times>, 362, 0, 0,
65536, 0, 0, 0, 65536, 0, 0, 0, 255, 4, 432, 15484702, 2, 13, 1, 1, 420,
1060575057, 23, 1058849384, 0, 0, 0, 0, 0, 0, 0, 0, 3, 768, 0, 0,
3240438805, 1087114292, 3534796093, 1083597651, 0 <repeats 45 times>}},
num_valuators = 0, valuators = {{min = 0, max = 0, value = 0, resolution
= 0, mode = 0 '\000', name = 0, scroll = {type = SCROLL_TYPE_NONE,
increment = 0, flags = 0}}, {min = 0, max = 0, value = 0, resolution =
0, mode = 0 '\000', name = 0, scroll = {type = SCROLL_TYPE_NONE,
increment = 0, flags = 0}}, {min = 0, max = 0, value =
3.2379086165851934e-319, resolution = 0, mode = 0 '\000', name = 0,
scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0,
max = 0, value = 0, resolution = 4105987086, mode = 120 'x', name = 0,
scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags = 16}}, {min =
1213915712, max = 32766, value = 6.9529913840723498e-310, resolution =
268422144, mode = 239 '\357', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 3.7054923438093491e-322, flags =
1213916576}}, {min = 1, max = 0, value = 7.9050503334599447e-323,
resolution = 0, mode = 0 '\000', name = 0, scroll = {type = 16,
increment = 6.9529913840865789e-310, flags = 1213915616}}, {min =
268422144, max = 1961141487, value = 0, resolution = 0, mode = 0 '\000',
name = 75, scroll = {type = 1213916672, increment =
4.9406564584124654e-324, flags = -1089692172}}, {min = 0, max = 0, value
= 6.719292783440953e-322, resolution = 0, mode = 0 '\000', name =
1213916384, scroll = {type = 4103620976, increment =
4.6431296182326437e-310, flags = 0}}, {min = 0, max = 1, value =
6.9529913841245232e-310, resolution = 4150081104, mode = 120 'x', name =
0, scroll = {type = 3205275124, increment = 0, flags = 136}}, {min = 0,
max = 0, value = 6.9529913841197801e-310, resolution = 4103620976, mode
= 120 'x', name = 4105276340, scroll = {type = SCROLL_TYPE_NONE,
increment = 2.1219957909652723e-314, flags = 1213916672}}, {min =
4150081104, max = 21880, value = 0, resolution = 0, mode = 0 '\000',
name = 0, scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags = 0}},
{min = 0, max = 0, value = 0, resolution = 0, mode = 0 '\000', name = 0,
scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0,
max = 0, value = 0, resolution = 0, mode = 0 '\000', name = 0, scroll =
{type = SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 4105987086,
max = 21880, value = 4.2439915819305446e-314, resolution = 0, mode = 0
'\000', name = 0, scroll = {type = 16, increment =
6.9529913841087131e-310, flags = 1213916064}}, {min = 268422144, max =
1961141487, value = 0, resolution = 0, mode = 0 '\000', name = 75,
scroll = {type = 1213917120, increment = 4.9406564584124654e-324, flags
= 4}}, {min = 0, max = 0, value = 0, resolution = 0, mode = 0 '\000',
name = 0, scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags = 0}},
{min = 0, max = 0, value = 0, resolution = 0, mode = 0 '\000', name = 0,
scroll = {type = 3205275124, increment = 0, flags = 136}}, {min = 0, max
= 0, value = 6.9529913841419143e-310, resolution = 4103620976, mode =
120 'x', name = 4105276340, scroll = {type = SCROLL_TYPE_NONE, increment
= 2.1219957909652723e-314, flags = -188436032}}, {min = 4148337632, max
= 21880, value = 6.9529913841118751e-310, resolution = 8399056, mode = 0
'\000', name = 4148337712, scroll = {type = 4143146528, increment =
6.9529913841174086e-310, flags = -190272924}}, {min = 1213916400, max =
32766, value = 6.9529913841245232e-310, resolution = 0, mode = 0 '\000',
name = 4106528880, scroll = {type = 4150081408, increment =
2.8764755468081378e-306, flags = 27}}, {min = 1213916576, max = 32766,
value = 4.6431314892685329e-310, resolution = 4148337712, mode = 120
'x', name = 4150547536, scroll = {type = 255, increment =
6.9529913841205706e-310, flags = -190994172}}, {min = 1213916576, max =
32766, value = 4.6431296801163421e-310, resolution = 4150018240, mode =
120 'x', name = 0, scroll = {type = 4106531264, increment =
4.6431314281553793e-310, flags = 1213916528}}, {min = 4104637226, max =
21880, value = 6.9529913841245232e-310, resolution = 4106528880, mode =
120 'x', name = 1213916832, scroll = {type = 4104640677, increment =
4.6431317129648568e-310, flags = -144886192}}, {min = 4151189472, max =
21880, value = 6.952991384126697e-310, resolution = 4139712768, mode =
120 'x', name = 56623224, scroll = {type = 4150086912, increment =
4.6429267906320158e-310, flags = 0}}, {min = 4194304, max = 0, value =
1.0185579799004822e-312, resolution = 1213916864, mode = 254 '\376',
name = 1213916656, scroll = {type = 268422144, increment =
6.9529913841300567e-310, flags = -155254528}}, {min = 56623224, max = 0,
value = 5.3049894823538372e-315, resolution = 4150086912, mode = 120
'x', name = 0, scroll = {type = 4147674192, increment =
6.9529913841427048e-310, flags = 0}}, {min = 4106528880, max = 21880,
value = 4.6431318318955485e-310, resolution = 4151189472, mode = 208
'\320', name = 27, scroll = {type = 1213916944, increment =
4.6431314892685329e-310, flags = -146629584}}, {min = 4150547536, max =
21880, value = 4.6431295364467953e-310, resolution = 1213916864, mode =
254 '\376', name = 4103973124, scroll = {type = 1213916944, increment =
2.1126856961950382e-313, flags = 1213916928}}, {min = 4104159783, max =
21880, value = 0, resolution = 4194304, mode = 0 '\000', name =
1213916896, scroll = {type = 4139712768, increment =
2.0043981967068292e-292, flags = 1213917144}}, {min = 1213917200, max =
0, value = 1.9697716888293148e-313, resolution = 1213916928, mode = 254
'\376', name = 4104153273, scroll = {type = 1213917056, increment =
4.6431295941854312e-310, flags = 1213917144}}, {min = 1213917136, max =
32766, value = 4.6431318828933998e-310, resolution = 1213917168, mode =
254 '\376', name = 4151322176, scroll = {type = 4145644048, increment =
1.0185579799004822e-312, flags = 1213917232}}, {min = 1213917024, max =
32766, value = 1.8062428172699362e-310, resolution = 0, mode = 0 '\000',
name = 0, scroll = {type = 79691776, increment = 1.210837699188e+255,
flags = 1213920720}}, {min = 4104791661, max = 21880, value =
4.6431318930324173e-310, resolution = 4151321632, mode = 120 'x', name =
4106531264, scroll = {type = 4151326976, increment =
4.6431318931992139e-310, flags = -149323248}}, {min = 4143146528, max =
21880, value = 4.6431314892685329e-310, resolution = 4150081376, mode =
120 'x', name = 4150637264, scroll = {type = 4151318800, increment =
4.6431318931723367e-310, flags = 255}}, {min = 432, max = 15484702,
value = 2.7585945283536671e-313, resolution = 0, mode = 1 '\001', name =
420, scroll = {type = 23, increment = 0, flags = 0}}, {min = 0, max = 0,
value = 0, resolution = 3, mode = 0 '\000', name = 0, scroll = {type =
3240438805, increment = 1432.8318584070796, flags = 0}}}, keys =
{min_keycode = 0, max_keycode = 0}}, touch_ownership_event = {header =
255 '\377', type = ET_Motion, length = 432, time = 15484702, deviceid =
2, sourceid = 13, touchid = 0, reason = 1 '\001', resource = 420, flags
= 1060575057}, barrier_event = {header = 255 '\377', type = ET_Motion,
length = 432, time = 15484702, deviceid = 2, sourceid = 13, barrierid =
0, window = 1, root = 420, dx = 0.00010970840230584176, dy = 0, root_x =
0, root_y = 0, dt = 0, event_id = 0, flags = 3}, dga_event = {header =
255 '\377', type = ET_Motion, length = 432, time = 15484702, subtype =
2, detail = 13, dx = 0, dy = 1, screen = 420, state = 5969}, raw_event =
{header = 255 '\377', type = ET_Motion, length = 432, time = 15484702,
deviceid = 2, sourceid = 13, detail = {button = 0, key = 0}, valuators =
{mask = "\244\001\000\000Q", data = {0.00010970840230584176, 0, 0, 0, 0,
1.6296927674628113e-311, 0, 14360.412144323849, 1432.8318584070796, 0
<repeats 27 times>}, data_raw = {0, 0, 0, 0, 0, 0, 0, 0,
3.3951932663349407e-313, 7.6816247632942858e-312,
7.9050503334599447e-323, 2.0043977189050206e-292, 0 <repeats 24
times>}}, flags = 0}}
button =
{any = {header = 255 '\377', type = ET_ButtonPress, length
= 432, time = 15484702}, device_event = {header = 255 '\377', type =
ET_ButtonPress, length = 432, time = 15484702, deviceid = 2, sourceid =
13, detail = {button = 1, key = 1}, touchid = 1, root_x = 420,
root_x_frac = 0.71519953, root_y = 23, root_y_frac = 0.612341404,
buttons = "\002", '\000' <repeats 30 times>, valuators = {mask =
"\003\000\000\000", mode = "\003\000\000\000", data =
{14360.412144323849, 1432.8318584070796, 0 <repeats 34 times>}}, mods =
{base = 0, latched = 0, locked = 16, effective = 16}, group = {base = 0
'\000', latched = 0 '\000', locked = 0 '\000', effective = 0 '\000'},
root = 362, corestate = 272, key_repeat = 0, flags = 65536, resource =
56623224, source_type = EVENT_SOURCE_NORMAL}, changed_event = {header =
255 '\377', type = ET_ButtonPress, length = 432, time = 15484702,
deviceid = 2, flags = 13, masterid = 1, sourceid = 1, buttons =
{num_buttons = 420, names = {1060575057, 23, 1058849384, 2, 0, 0, 0, 0,
0, 0, 0, 3, 768, 0, 0, 3240438805, 1087114292, 3534796093, 1083597651, 0
<repeats 70 times>, 16, 16, 0, 362, 272, 0, 65536, 56623224, 0, 0,
4145645024, 21880, 1213917920, 32766, 4145581104, 21880, 4145644048,
21880, 4105100079, 21880, 4103901640, 21880, 4148603056, 2, 4148603056,
21880, 0, 0, 4145581104, 21880, 1213917840, 32766, 4103988303, 21880,
1213921072, 32766, 268422144, 1961141487, 1213921024, 32766, 4103700031,
21880, 1213918064, 32766, 4139887088, 21880, 1213921072, 32766,
4148603056, 21880, 0, 0, 0, 0, 0, 0, 4145644048, 21880, 255, 8, 432,
15782414, 2, 13, 1, 1, 417, 1051460372, 10, 1039459246, 0, 0, 0, 0, 0,
0, 0, 0, 3, 768, 0, 0, 2731442974, 1087099528, 4256958736, 1082339472, 0
<repeats 70 times>, 16, 16, 0, 362, 16, 0, 36, 0, 0, 0, 0}},
num_valuators = 0, valuators = {{min = 0, max = 0, value = 0, resolution
= 0, mode = 0 '\000', name = 0, scroll = {type = SCROLL_TYPE_NONE,
increment = 0, flags = 0}}, {min = 0, max = 0, value = 0, resolution =
0, mode = 0 '\000', name = 0, scroll = {type = SCROLL_TYPE_NONE,
increment = 0, flags = 0}}, {min = 0, max = 0, value = 0, resolution =
0, mode = 0 '\000', name = 0, scroll = {type = SCROLL_TYPE_NONE,
increment = 0, flags = 0}}, {min = 0, max = 0, value = 0, resolution =
3, mode = 0 '\000', name = 0, scroll = {type = 3240438805, increment =
1432.8318584070796, flags = 0}}, {min = 0, max = 0, value = 0,
resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 16}}, {min = 0, max = 362,
value = 7.9050503334599447e-323, resolution = 32, mode = 0 '\000', name
= 0, scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min
= 0, max = 0, value = 0, resolution = 0, mode = 0 '\000', name = 0,
scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0,
max = 0, value = 0, resolution = 0, mode = 0 '\000', name = 0, scroll =
{type = SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0,
value = 0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
0, resolution = 0, mode = 0 '\000', name = 0, scroll = {type =
SCROLL_TYPE_NONE, increment = 6.9529913843379595e-310, flags =
-1090455376}}, {min = 7, max = 0, value = 0, resolution = 0, mode = 0
'\000', name = 2, scroll = {type = SCROLL_TYPE_NONE, increment =
6.9529913848715504e-310, flags = 1213931648}}, {min = 3655872, max = 0,
value = 7.797344022666553e-320, resolution = 255, mode = 0 '\000', name
= 1213925168, scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags =
-144607904}}, {min = 79691776, max = 0, value = 6.9529913843379595e-310,
resolution = 79691776, mode = 0 '\000', name = 0, scroll = {type =
4150359392, increment = 4.6431318828933998e-310, flags = 1213920880}},
{min = 4104089693, max = 21880, value = 6.3250283980596383e-320,
resolution = 51, mode = 0 '\000', name = 0, scroll = {type = 3,
increment = 0, flags = 0}}, {min = 1213919872, max = 32766, value =
4.643129570038121e-310, resolution = 4106586016, mode = 120 'x', name =
1213919808, scroll = {type = 1213919804, increment =
6.9529913842838099e-310, flags = 1213919796}}, {min = 4141769632, max =
21880, value = 6.9529913842810431e-310, resolution = 0, mode = 0 '\000',
name = 0, scroll = {type = 268422144, increment =
6.9529913842857862e-310, flags = -190649634}}, {min = 4106586016, max =
21880, value = 6.9529913842990271e-310, resolution = 1213920104, mode =
254 '\376', name = 4139887088, scroll = {type = 4106586016, increment =
9.4860604001519336e-321, flags = -188436032}}, {min = 4148337632, max =
21880, value = 6.9529913842865767e-310, resolution = 8399056, mode = 0
'\000', name = 4148337712, scroll = {type = 4143146528, increment =
6.9529913842921102e-310, flags = -190272924}}, {min = 895, max = 0,
value = 6.9529913842992248e-310, resolution = 0, mode = 0 '\000', name =
4106528880, scroll = {type = SCROLL_TYPE_NONE, increment =
2.8764729222799444e-306, flags = 27}}, {min = 1213920112, max = 32766,
value = 4.6431314892685329e-310, resolution = 4148337712, mode = 120
'x', name = 4150547536, scroll = {type = 255, increment =
6.9529913842952722e-310, flags = -190994172}}, {min = 1213920112, max =
32766, value = 4.6431296801163421e-310, resolution = 0, mode = 0 '\000',
name = 0, scroll = {type = SCROLL_TYPE_NONE, increment =
4.6431314281553793e-310, flags = 1213920064}}, {min = 4104637226, max =
21880, value = 6.9529913842992248e-310, resolution = 4106528880, mode =
120 'x', name = 1213920368, scroll = {type = 4104640677, increment =
2.3341953715439965e-313, flags = 70778880}}, {min = 30, max = 9, value =
6.9529913843013987e-310, resolution = 4139712768, mode = 120 'x', name =
56623224, scroll = {type = 4150086912, increment = 0, flags = 0}}, {min
= 4194304, max = 0, value = 1.0185579799004822e-312, resolution =
1213920400, mode = 254 '\376', name = 1213920192, scroll = {type =
268422144, increment = 1.6168125228484307e-314, flags = -155254528}},
{min = 56623224, max = 0, value = 5.3049894823538372e-315, resolution =
4150086912, mode = 120 'x', name = 0, scroll = {type = 1130823680,
increment = 0, flags = -1031368157}}, {min = 0, max = 0, value =
4.1445230292290475e-317, resolution = 0, mode = 0 '\000', name =
1213920320, scroll = {type = 4104102869, increment =
6.5701571058150275e-314, flags = 1213920512}}, {min = 1213921104, max =
32766, value = 4.643129559385374e-310, resolution = 1179670611, mode =
68 'D', name = 7, scroll = {type = 832, increment =
1.9097962118687451e-313, flags = 1213920464}}}, keys = {min_keycode =
-190807513, max_keycode = 21880}}, touch_ownership_event = {header = 255
'\377', type = ET_ButtonPress, length = 432, time = 15484702, deviceid =
2, sourceid = 13, touchid = 1, reason = 1 '\001', resource = 420, flags
= 1060575057}, barrier_event = {header = 255 '\377', type =
ET_ButtonPress, length = 432, time = 15484702, deviceid = 2, sourceid =
13, barrierid = 1, window = 1, root = 420, dx = 0.00010970840230584176,
dy = 9.8813129168249309e-324, root_x = 0, root_y = 0, dt = 0, event_id =
0, flags = 3}, dga_event = {header = 255 '\377', type = ET_ButtonPress,
length = 432, time = 15484702, subtype = 2, detail = 13, dx = 1, dy = 1,
screen = 420, state = 5969}, raw_event = {header = 255 '\377', type =
ET_ButtonPress, length = 432, time = 15484702, deviceid = 2, sourceid =
13, detail = {button = 1, key = 1}, valuators = {mask =
"\244\001\000\000Q", data = {0.00010970840230584176,
9.8813129168249309e-324, 0, 0, 0, 1.6296927674628113e-311, 0,
14360.412144323849, 1432.8318584070796, 0 <repeats 27 times>}, data_raw
= {0, 0, 0, 0, 0, 0, 0, 0, 3.3951932663349407e-313,
7.6816247632942858e-312, 1.3438585566881906e-321,
2.0043977189050206e-292, 0, 4.6431316127106369e-310,
6.9529913841909256e-310, 4.6431316095525693e-310,
4.6431316126624161e-310, 4.6431296095241932e-310,
4.6431295503134394e-310, 6.2936738301321537e-314,
4.643131758856836e-310, 0, 4.6431316095525693e-310,
6.952991384186973e-310, 4.6431295545951605e-310,
6.9529913843466551e-310, 1.210837699188e+255, 6.9529913843442836e-310,
4.6431295403526313e-310, 6.9529913841980401e-310,
4.6431313282308001e-310, 6.9529913843466551e-310,
4.643131758856836e-310, 0, 0, 0}}, flags = 4145644048}}
ptrev = 0x7ffe485ae870
nevents = 2
kbd = 0x5578f7188c30
__func__ = "DeliverTouchEmulatedEvent"
#8 0x00005578f4aa3574 in DeliverTouchBeginEvent
(dev=0x5578f7198210, ti=0x5578f7702640, ev=0x5578f7703900,
listener=0x5578f76cf770, client=0x5578f7429b70, win=0x5578f75d4d00,
grab=0x0, xi2mask=0x0)
at ../xorg-server-1.20.4/Xi/exevents.c:1890
state = 32766
rc = 0
has_ownershipmask = 32766
#9 0x00005578f4aa3a04 in DeliverTouchEvent
(dev=0x5578f7198210, ti=0x5578f7702640, ev=0x5578f7703900,
listener=0x5578f76cf770, client=0x5578f7429b70, win=0x5578f75d4d00,
grab=0x0, xi2mask=0x0)
at ../xorg-server-1.20.4/Xi/exevents.c:2017
has_ownershipmask = 0
rc = 0
#10 0x00005578f4aa3c15 in DeliverTouchEvents (dev=0x5578f7198210,
ti=0x5578f7702640, ev=0x5578f7703900, resource=56623224)
at ../xorg-server-1.20.4/Xi/exevents.c:2072
grab = 0x0
mask = 0x0
listener = 0x5578f76cf770
client = 0x5578f7429b70
win = 0x5578f75d4d00
i = 0
#11 0x00005578f4aa2a2e in ProcessTouchEvent (ev=0x5578f7703900,
dev=0x5578f7198210) at ../xorg-server-1.20.4/Xi/exevents.c:1626
t = 0x5578f76654e0
ti = 0x5578f7702640
touchid = 1
type = 7
emulate_pointer = 1
kbd = 0x5578f7188c30
#12 0x00005578f4aa34c2 in ProcessOtherEvent (ev=0x5578f7703900,
device=0x5578f7198210) at ../xorg-server-1.20.4/Xi/exevents.c:1861
#13 0x00005578f4a1069f in TouchEventHistoryReplay (ti=0x5578f7702640,
dev=0x5578f7198210, resource=56623224) at
../xorg-server-1.20.4/dix/touch.c:470
ev = 0x5578f7703900
i = 0
#14 0x00005578f4aa14aa in TouchPuntToNextOwner (dev=0x5578f7198210,
ti=0x5578f7702640, ev=0x5578f770e1d0) at
../xorg-server-1.20.4/Xi/exevents.c:1123
listener = 0x5578f76cf770
accepted_early = 0
#15 0x00005578f4aa16ab in TouchRejected (sourcedev=0x5578f7198210,
ti=0x5578f7702640, resource=79691776, ev=0x5578f770e1d0)
at ../xorg-server-1.20.4/Xi/exevents.c:1199
was_owner = 1
i = 0
#16 0x00005578f4aa1766 in ProcessTouchOwnershipEvent (ev=0x5578f770e1d0,
dev=0x5578f7198210) at ../xorg-server-1.20.4/Xi/exevents.c:1226
ti = 0x5578f7702640
#17 0x00005578f4aa34d7 in ProcessOtherEvent (ev=0x5578f770e1d0,
device=0x5578f7198210) at ../xorg-server-1.20.4/Xi/exevents.c:1866
#18 0x00005578f4aeddd8 in ProcessPointerEvent (ev=0x5578f770e1d0,
mouse=0x5578f7198210) at ../xorg-server-1.20.4/xkb/xkbAccessX.c:756
dev = 0x5578f7188c30
xkbi = 0x5578f718a4d0
changed = 0
backupproc = 0x5578f4aedb2f <ProcessPointerEvent>
xkbPrivPtr = 0x5578f71985e0
event = 0x5578f770e1d0
#19 0x00005578f4997e01 in mieqProcessDeviceEvent (dev=0x5578f7198210,
event=0x5578f770e1d0, screen=0x0) at ../xorg-server-1.20.4/mi/mieq.c:491
handler = 0x0
master = 0x0
mevent =
{any = {header = 14 '\016', type = 21880, length = 0, time
= 2}, device_event = {header = 14 '\016', type = 21880, length = 0, time
= 2, deviceid = 0, sourceid = 0, detail = {button = 0, key = 0}, touchid
= 0, root_x = 16, root_x_frac = 6.72623263e-44, root_y = -1712,
root_y_frac = 4.59149455e-41, buttons =
"\220\370ZH\376\177\000\000\000\314\377\017\357\244\344tp7]\367xU\000\000\270\370ZH\376\177\000",
valuators = {mask = ":\000\000\000", mode = "\000\000\000\260",
<incomplete sequence \374>, data = {4.9406564584124654e-324,
2.0722615146145237e-317, 4.6431296533481619e-310,
6.2944042172577138e-314, 6.9529913843695797e-310,
4.6431296159537659e-310, 1.0185579797423812e-312,
6.9529913843790658e-310, 6.9529913843695797e-310, 1.210837699188e+255,
6.9529913845253092e-310, 4.6431296167503974e-310, 2.86558074587923e-322,
6.952991384421753e-310, 4.9406564584124654e-324,
2.0722615146145237e-317, 2.7975530447296071e-316,
6.9529913844067334e-310, 2.5197347937903574e-322,
6.9529913844241246e-310, 4.6431296533481619e-310,
4.2442506146198714e-314, 6.9529913844162195e-310,
4.6431317532418787e-310, 1.0185579797423812e-312,
6.9529913843861803e-310, 6.9529913843766943e-310,
6.905557064591613e-310, 0, 1.5810100666919889e-322,
2.7975530447296071e-316, 6.952991384412267e-310,
1.2598673968951787e-321, 4.6431296182326437e-310,
2.1856495803350898e-317, 2.121995806775373e-314}}, mods = {base =
1213922592, latched = 32766, locked = 4148489408, effective = 21880},
group = {base = 255 '\377', latched = 0 '\000', locked = 0 '\000',
effective = 0 '\000'}, root = 0, corestate = -189690956, key_repeat =
21880, flags = 1213922624, resource = 32766, source_type = (unknown:
4148128608)}, changed_event = {header = 14 '\016', type = 21880, length
= 0, time = 2, deviceid = 0, flags = 0, masterid = 0, sourceid = 0,
buttons = {num_buttons = 16, names = {48, 1213921616, 32766, 1213921424,
32766, 268422144, 1961141487, 4150081392, 21880, 1213921464, 32766, 58,
0, 1213922480, 32766, 1, 0, 4194304, 0, 4105987086, 21880, 4150081376,
2, 1213921536, 32766, 4105230215, 21880, 16, 48, 1213921728, 32766,
1213921536, 32766, 268422144, 1961141487, 1213924688, 32766, 4105246339,
21880, 58, 0, 1213922592, 32766, 1, 0, 4194304, 0, 56623104, 0,
1213922288, 32766, 51, 0, 1213922640, 32766, 4105987086, 21880, 524288,
2, 1213922480, 32766, 4148489408, 21880, 16, 48, 1213921872, 32766,
1213921680, 32766, 3205275124, 32542, 0, 0, 32, 0, 56623104, 0,
1213922400, 32766, 255, 0, 4105276340, 21880, 4423804, 0, 32, 1,
1213922592, 32766, 4148489408, 21880, 255, 0, 4105276340, 21880,
1213922624, 32766, 4148128608, 1, 1213922640, 32766, 4141592080, 21880,
0, 0, 3205275124, 32542, 0, 0, 32, 0, 4423680, 0, 1213922544, 32766,
79691776, 0, 4105276340, 21880, 0, 0, 32, 1, 1213922736, 32766,
4150081104, 21880, 79691776, 0, 4105276340, 21880, 0, 0, 0, 1,
1213922784, 32766, 4150081104, 21880, 0 <repeats 62 times>, 4148337520,
21880, 0, 0, 4106589016, 21880, 0, 1, 4148782112, 21880, 1213922304,
32766, 4103973124, 21880, 4148337520, 21880, 4106589016, 21880,
4148337552, 21880, 4148337552, 21880, 1213922312, 32766, 4105234494,
21880, 4148337552, 21880, 4148337520, 21880, 0, 0, 4106589016, 21880,
1213922544, 1, 4148782112, 21880, 1213922416, 32766, 4103973124, 21880,
4148337520, 21880, 4106589016, 21880, 4148337552, 21880, 4148337552,
21880, 1213922424...}}, num_valuators = 21880, valuators = {{min =
1213922448, max = 32766, value = 4.6431296161736745e-310, resolution =
4148337520, mode = 120 'x', name = 1213922656, scroll = {type =
4105240460, increment = 6.7903865310888714e-313, flags = 1213924560}},
{min = 4148673504, max = 21880, value = 4.6431317457376145e-310,
resolution = 1213922560, mode = 1 '\001', name = 32, scroll = {type =
SCROLL_TYPE_NONE, increment = 0, flags = 0}}, {min = 0, max = 0, value =
1.5810100666919889e-322, resolution = 4147915168, mode = 120 'x', name =
4147674192, scroll = {type = 4148489408, increment =
6.9529913845189852e-310, flags = 0}}, {min = 1213924560, max = 32766,
value = 1.5810100666919889e-322, resolution = 1213922632, mode = 254
'\376', name = 4105234494, scroll = {type = 4148337552, increment =
4.6431296810673197e-310, flags = 1213922656}}, {min = 268422144, max =
1961141487, value = 6.9529913844328201e-310, resolution = 4105238867,
mode = 120 'x', name = 1213922720, scroll = {type = 1213924560,
increment = 6.7903865326698815e-313, flags = -146629776}}, {min =
4145644048, max = 21880, value = 1.3261815993345208e-315, resolution =
4147674192, mode = 120 'x', name = 1213924560, scroll = {type =
4148673504, increment = 4.6431296820902332e-310, flags = -146629776}},
{min = 1213924560, max = 32766, value = 1.5810100666919889e-322,
resolution = 4141585296, mode = 120 'x', name = 1213922816, scroll =
{type = SCROLL_TYPE_NONE, increment = 6.9529913844367726e-310, flags =
268422144}}, {min = 1213922976, max = 32766, value =
4.6431295573802085e-310, resolution = 1213922864, mode = 254 '\376',
name = 1213924560, scroll = {type = 1213922912, increment =
4.6431317457376145e-310, flags = 1213923168}}, {min = 1, max = 32, value
= 4.6431318287762157e-310, resolution = 4106568832, mode = 6 '\006',
name = 4148337520, scroll = {type = 1213924560, increment =
4.6429267906320652e-310, flags = -143874944}}, {min = 1213924560, max =
32766, value = 4.9406564584124654e-324, resolution = 1213923040, mode =
254 '\376', name = 268422144, scroll = {type = 40, increment =
1.210837699188e+255, flags = 1213923152}}, {min = 4104003085, max =
21880, value = 0, resolution = 4148337520, mode = 0 '\000', name =
14811184, scroll = {type = 1213924560, increment =
6.9529913844723454e-310, flags = -146629776}}, {min = 4150081376, max =
21880, value = 6.0015640568766576e-313, resolution = 1, mode = 120 'x',
name = 4151092352, scroll = {type = 1213924560, increment =
6.9529913845189852e-310, flags = -144885920}}, {min = 1213924560, max =
28, value = 6.9529913844502112e-310, resolution = 4103988736, mode = 120
'x', name = 1213923616, scroll = {type = 268422144, increment =
2.7975530447296071e-316, flags = 255}}, {min = 1213923280, max = 32766,
value = 4.6431295554084419e-310, resolution = 0, mode = 0 '\000', name =
4104004713, scroll = {type = 4194304, increment =
2.1240680524798868e-314, flags = 1213924560}}, {min = 4151092352, max =
21880, value = 0, resolution = 1213923616, mode = 254 '\376', name =
1213923408, scroll = {type = SCROLL_TYPE_NONE, increment =
2.1293134881539059e-314, flags = -146629776}}, {min = 79691776, max = 0,
value = 1.2598673968951787e-321, resolution = 1213923408, mode = 254
'\376', name = 4104005047, scroll = {type = SCROLL_TYPE_NONE, increment
= 6.9529913845189852e-310, flags = 1213923496}}, {min = 1213924560, max
= 32766, value = 6.9529913844628593e-310, resolution = 4104003213, mode
= 120 'x', name = 1213923520, scroll = {type = SCROLL_TYPE_NONE,
increment = 6.9529913845189852e-310, flags = -143874944}}, {min =
4148337520, max = 21880, value = 6.9529913844723454e-310, resolution =
4151224512, mode = 120 'x', name = 16763904, scroll = {type =
1213923552, increment = 4.6431295554410009e-310, flags = 1213923552}},
{min = 4104005527, max = 21880, value = 4.1725560768225698e-314,
resolution = 0, mode = 0 '\000', name = 4194304, scroll = {type =
1213924560, increment = 4.6431318818443996e-310, flags = 1213923616}},
{min = 4141599728, max = 28, value = 4.2513092791191782e-314, resolution
= 0, mode = 28 '\034', name = 0, scroll = {type = 4148337520, increment
= 1.210837699188e+255, flags = 0}}, {min = 4103620976, max = 21880,
value = 6.9529913845150326e-310, resolution = 4104010586, mode = 120
'x', name = 0, scroll = {type = 4150679984, increment =
6.9529913845189852e-310, flags = -143874944}}, {min = 1213924528, max =
1, value = 1.7800590868057738e-307, resolution = 0, mode = 0 '\000',
name = 0, scroll = {type = SCROLL_TYPE_NONE, increment = 0, flags =
32}}, {min = 4147915168, max = 21880, value = 4.6431317129648568e-310,
resolution = 4141592080, mode = 120 'x', name = 4150679984, scroll =
{type = SCROLL_TYPE_NONE, increment = 4.6431318614707134e-310, flags =
32}}, {min = 1213923736, max = 32766, value = 4.6431296161651766e-310,
resolution = 4106531264, mode = 120 'x', name = 4139712880, scroll =
{type = 1213923776, increment = 2.8480945388892178e-306, flags =
-151820768}}, {min = 4148271440, max = 21880, value =
6.9529913844849934e-310, resolution = 4104696330, mode = 120 'x', name =
0, scroll = {type = 1213924016, increment = 0, flags = -188438384}},
{min = 4147674192, max = 21880, value = 6.952991384492108e-310,
resolution = 4148271440, mode = 120 'x', name = 4143146528, scroll =
{type = 4106531264, increment = 4.6431318319010821e-310, flags =
1213923904}}, {min = 8399056, max = 32, value = 4.6431296802341274e-310,
resolution = 4150081488, mode = 120 'x', name = 1213923936, scroll =
{type = 8399056, increment = 4.6431318319050346e-310, flags =
-144885728}}, {min = 1213924048, max = 32766, value =
4.6431295894796041e-310, resolution = 1213924016, mode = 254 '\376',
name = 1213924192, scroll = {type = SCROLL_TYPE_NONE, increment =
4.6431296801163421e-310, flags = -144885728}}, {min = 4150081568, max =
8399056, value = 5.4323092250588421e-312, resolution = 3205274753, mode
= 30 '\036', name = 3206118048, scroll = {type = 376832, increment =
1.5257537648611039e-318, flags = -1090132499}}, {min = 4143146528, max =
21880, value = 6.9055570420828715e-310, resolution = 1213924144, mode =
254 '\376', name = 4151435264, scroll = {type = 308848, increment =
-na9529913845253092e-310, 4.6431296167503974e-310,
2.86558074587923e-322, 6.952991384421753e-310, 4.9406564584124654e-324,
2.0722615146145237e-317, 2.7975530447296071e-316,
6.9529913844067334e-310, 2.5197347937903574e-322,
6.9529913844241246e-310, 4.6431296533481619e-310,
4.2442506146198714e-314, 6.9529913844162195e-310,
4.6431317532418787e-310, 1.0185579797423812e-312,
6.9529913843861803e-310, 6.9529913843766943e-310,
6.905557064591613e-310, 0}, data_raw = {1.5810100666919889e-322,
2.7975530447296071e-316, 6.952991384412267e-310,
1.2598673968951787e-321, 4.6431296182326437e-310,
2.1856495803350898e-317, 2.121995806775373e-314, 6.952991384421753e-310,
4.6431317532418787e-310, 1.2598673968951787e-321,
4.6431296182326437e-310, 6.9529913844233341e-310,
4.1714436307093433e-314, 6.9529913844241246e-310,
4.6431314124685974e-310, 0, 6.905557064591613e-310, 0,
1.5810100666919889e-322, 2.1855883161950055e-317,
6.9529913844193815e-310, 3.9372968777675951e-316,
4.6431296182326437e-310, 0, 2.121995806775373e-314,
6.9529913844288676e-310, 4.64313183188211e-310, 3.9372968777675951e-316,
4.6431296182326437e-310, 0, 2.1219957909652723e-314,
6.9529913844312391e-310, 4.64313183188211e-310, 0, 0, 0}}, flags = 0}}
#20 0x00005578f4a11cf7 in TouchListenerAcceptReject (dev=0x5578f7198210,
ti=0x5578f7702640, listener=0, mode=7) at
../xorg-server-1.20.4/dix/touch.c:1005
events = 0x5578f770e1d0
nev = 1
i = 0
__func__ = "TouchListenerAcceptReject"
#21 0x00005578f49e0d8a in DeactivatePointerGrab (mouse=0x5578f7198210)
at ../xorg-server-1.20.4/dix/events.c:1584
mode = 7
ti = 0x5578f7702640
grab = 0x5578f7701910
dev = 0x9485b0528
wasPassive = 0
wasImplicit = 0
grab_resource = 79691776
i = 0
#22 0x00005578f4ab5747 in ProcXIUngrabDevice (client=0x5578f75d3760) at
../xorg-server-1.20.4/Xi/xigrabdev.c:169
dev = 0x5578f7198210
grab = 0x5578f7701910
ret = 0
time = {months = 0, milliseconds = 15782426}
stuff = 0x5578f76659ec
#23 0x00005578f4aa6af7 in ProcIDispatch (client=0x5578f75d3760) at
../xorg-server-1.20.4/Xi/extinit.c:398
stuff = 0x5578f76659ec
#24 0x00005578f49ca00b in Dispatch () at
../xorg-server-1.20.4/dix/dispatch.c:479
result = 0
client = 0x5578f75d3760
start_tick = 300
#25 0x00005578f49d91b9 in dix_main (argc=10, argv=0x7ffe485b0738,
envp=0x7ffe485b0790) at ../xorg-server-1.20.4/dix/main.c:276
i = 1
alwaysCheckForInput = {0, 1}
#26 0x00005578f4ba65da in main (argc=10, argv=0x7ffe485b0738,
envp=0x7ffe485b0790) at ../xorg-server-1.20.4/dix/stubmain.c:34
$6 = (GrabPtr) 0x5578f7701910
(gdb) cont
Continuing.
n(0xffffffffff000), flags = 0}}, {min = 3204812695, max = 32542, value =
0, resolution = 3206118144, mode = 30 '\036', name = 4150081568, scroll
= {type = 19299, increment = 6.905557106242335e-310, flags = 308816}},
{min = 0, max = 0, value = 6.905557106237592e-310, resolution = 256,
mode = 0 '\000', name = 3204823967, scroll = {type = 308800, increment =
1.0869444208507424e-322, flags = 7}}, {min = 0, max = 0, value =
6.9529314086829871e-310, resolution = 4139793192, mode = 120 'x', name =
308799, scroll = {type = 1, increment = 1.2598673968951787e-321, flags =
1213925168}}, {min = 1213924336, max = 32766, value =
6.9055570692167591e-310, resolution = 694, mode = 125 '}', name =
79691776, scroll = {type = 1213924368, increment =
4.6431296168556334e-310, flags = -191346320}}, {min = 4104066544, max =
21880, value = 7.797344022666553e-320, resolution = 426854797, mode = 26
'\032', name = 4151370192, scroll = {type = 4145644048, increment =
6.9529913845142421e-310, flags = -190884313}}, {min = 79691776, max = 0,
value = 5.9975837430864904e-315, resolution = 79691776, mode = 7 '\a',
name = 4151322176, scroll = {type = 4145644048, increment =
4.6431318955715195e-310, flags = 0}}}, keys = {min_keycode = 0,
max_keycode = 15782426}}, touch_ownership_event = {header = 14 '\016',
type = 21880, length = 0, time = 2, deviceid = 0, sourceid = 0, touchid
= 0, reason = 0 '\000', resource = 16, flags = 48}, barrier_event =
{header = 14 '\016', type = 21880, length = 0, time = 2, deviceid = 0,
sourceid = 0, barrierid = 0, window = 0, root = 16, dx =
6.9529913843735322e-310, dy = 6.9529913843640462e-310, root_x =
1.210837699188e+255, root_y = 4.643131831896339e-310, dt = -1864,
event_id = 32766, flags = 58}, dga_event = {header = 14 '\016', type =
21880, length = 0, time = 2, subtype = 0, detail = 0, dx = 0, dy = 0,
screen = 16, state = 48}, raw_event = {header = 14 '\016', type = 21880,
length = 0, time = 2, deviceid = 0, sourceid = 0, detail = {button = 0,
key = 0}, valuators = {mask = "\020\000\000\000\060", data =
{6.9529913843735322e-310, 6.9529913843640462e-310, 1.210837699188e+255,
4.643131831896339e-310, 6.9529913843660224e-310, 2.86558074587923e-322,
6.9529913844162195e-310, 4.9406564584124654e-324,
2.0722615146145237e-317, 4.6431296533481619e-310,
6.2944042172577138e-314, 6.9529913843695797e-310,
4.6431296159537659e-310, 1.0185579797423812e-312,
6.9529913843790658e-310, 6.9529913843695797e-310, 1.210837699188e+255,
6.9529913845253092e-310, 4.6431296167503974e-310, 2.86558074587923e-322,
6.952991384421753e-310, 4.9406564584124654e-324,
2.0722615146145237e-317, 2.7975530447296071e-316,
6.9529913844067334e-310, 2.5197347937903574e-322,
6.9529913844241246e-310, 4.6431296533481619e-310,
4.2442506146198714e-314, 6.9529913844162195e-310,
4.6431317532418787e-310, 1.0185579797423812e-312,
6.9529913843861803e-310, 6.9529913843766943e-310,
6.905557064591613e-310, 0}, data_raw = {1.5810100666919889e-322,
2.7975530447296071e-316, 6.952991384412267e-310,
1.2598673968951787e-321, 4.6431296182326437e-310,
2.1856495803350898e-317, 2.121995806775373e-314, 6.952991384421753e-310,
4.6431317532418787e-310, 1.2598673968951787e-321,
4.6431296182326437e-310, 6.9529913844233341e-310,
4.1714436307093433e-314, 6.9529913844241246e-310,
4.6431314124685974e-310, 0, 6.905557064591613e-310, 0,
1.5810100666919889e-322, 2.1855883161950055e-317,
6.9529913844193815e-310, 3.9372968777675951e-316,
4.6431296182326437e-310, 0, 2.121995806775373e-314,
6.9529913844288676e-310, 4.64313183188211e-310, 3.9372968777675951e-316,
4.6431296182326437e-310, 0, 2.1219957909652723e-314,
6.9529913844312391e-310, 4.64313183188211e-310, 0, 0, 0}}, flags = 0}}
#20 0x00005578f4a11cf7 in TouchListenerAcceptReject (dev=0x5578f7198210,
ti=0x5578f7702640, listener=0, mode=7) at
../xorg-server-1.20.4/dix/touch.c:1005
events = 0x5578f770e1d0
nev = 1
i = 0
__func__ = "TouchListenerAcceptReject"
#21 0x00005578f49e0d8a in DeactivatePointerGrab (mouse=0x5578f7198210)
at ../xorg-server-1.20.4/dix/events.c:1584
mode = 7
ti = 0x5578f7702640
grab = 0x5578f7701910
dev = 0x9485b0528
wasPassive = 0
wasImplicit = 0
grab_resource = 79691776
i = 0
#22 0x00005578f4ab5747 in ProcXIUngrabDevice (client=0x5578f75d3760) at
../xorg-server-1.20.4/Xi/xigrabdev.c:169
dev = 0x5578f7198210
grab = 0x5578f7701910
ret = 0
time = {months = 0, milliseconds = 15782426}
stuff = 0x5578f76659ec
#23 0x00005578f4aa6af7 in ProcIDispatch (client=0x5578f75d3760) at
../xorg-server-1.20.4/Xi/extinit.c:398
stuff = 0x5578f76659ec
#24 0x00005578f49ca00b in Dispatch () at
../xorg-server-1.20.4/dix/dispatch.c:479
result = 0
client = 0x5578f75d3760
start_tick = 300
#25 0x00005578f49d91b9 in dix_main (argc=10, argv=0x7ffe485b0738,
envp=0x7ffe485b0790) at ../xorg-server-1.20.4/dix/main.c:276
i = 1
alwaysCheckForInput = {0, 1}
#26 0x00005578f4ba65da in main (argc=10, argv=0x7ffe485b0738,
envp=0x7ffe485b0790) at ../xorg-server-1.20.4/dix/stubmain.c:34
$6 = (GrabPtr) 0x5578f7701910
Thread 1 "Xorg" hit Breakpoint 1, FreeGrab (pGrab=0x5578f7701910) at
../xorg-server-1.20.4/dix/grabs.c:255
255 BUG_RETURN(!pGrab);
#0 0x00005578f49f705d in FreeGrab (pGrab=0x5578f7701910) at
../xorg-server-1.20.4/dix/grabs.c:255
__func__ = "FreeGrab"
#1 0x00005578f49e0ee9 in DeactivatePointerGrab (mouse=0x5578f7198210)
at ../xorg-server-1.20.4/dix/events.c:1610
grab = 0x5578f7701910
dev = 0x0
wasPassive = 0
wasImplicit = 0
grab_resource = 79691776
i = 10
#2 0x00005578f4ab5747 in ProcXIUngrabDevice (client=0x5578f75d3760) at
../xorg-server-1.20.4/Xi/xigrabdev.c:169
dev = 0x5578f7198210
grab = 0x5578f7701910
ret = 0
time = {months = 0, milliseconds = 15782426}
stuff = 0x5578f76659ec
#3 0x00005578f4aa6af7 in ProcIDispatch (client=0x5578f75d3760) at
../xorg-server-1.20.4/Xi/extinit.c:398
stuff = 0x5578f76659ec
#4 0x00005578f49ca00b in Dispatch () at
../xorg-server-1.20.4/dix/dispatch.c:479
result = 0
client = 0x5578f75d3760
start_tick = 300
#5 0x00005578f49d91b9 in dix_main (argc=10, argv=0x7ffe485b0738,
envp=0x7ffe485b0790) at ../xorg-server-1.20.4/dix/main.c:276
i = 1
alwaysCheckForInput = {0, 1}
#6 0x00005578f4ba65da in main (argc=10, argv=0x7ffe485b0738,
envp=0x7ffe485b0790) at ../xorg-server-1.20.4/dix/stubmain.c:34
$9 = (GrabPtr) 0x5578f7701910
(gdb) cont
Continuing.
Thread 1 "Xorg" received signal SIGSEGV, Segmentation fault.
0x00007f1ebf05d141 in free () from /usr/lib/libc.so.6Steps to reproduce
-
open a gtk3 application
-
open a menu
-
touch (with the touchscreen) the application titlebar or the start bar
-
X crashes instantly this behavior was found using the gtk demo application and in other gtk based applications.
however in firefox i noticed that this only happens when using xinput2, if not firefox calls gdk_disable_multidevice() and the crash does not happen
Version information
-
Xserver 1.19.6
-
XI version on server: 2.3
-
GTK+ 3.22.30
-
linux mint 19
Backtrace
GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/xorg/Xorg...Reading symbols from /usr/lib/debug/.build-id/34/a9250370308d905838793061affea00de00ceb.debug...done.
done.
[New LWP 27990]
[New LWP 27993]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -noliste'.
Program terminated with signal SIGABRT, Aborted.
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7fabc04d9600 (LWP 27990))]
(gdb) bt full
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
set = {__val = {171516928, 0, 0, 0, 0, 0, 94707062363680, 67108868, 140375599380624, 0, 0, 0, 0, 0, 0, 0}}
pid = <optimized out>
tid = <optimized out>
ret = <optimized out>
#1 0x00007fabbd804801 in __GI_abort () at abort.c:79
save_stage = 1
act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {
0 <repeats 12 times>, 67108868, 140375599380624, 16997243486433269248, 0}}, sa_flags = 1,
sa_restorer = 0x7fffdba08ab0}
sigs = {__val = {32, 0 <repeats 15 times>}}
__cnt = <optimized out>
__set = <optimized out>
__cnt = <optimized out>
__set = <optimized out>
#2 0x00005622b4cf85aa in OsAbort () at ../../../../os/utils.c:1361
No locals.
#3 0x00005622b4bd038c in ddxGiveUp (error=error@entry=EXIT_ERR_ABORT)
at ../../../../../../hw/xfree86/common/xf86Init.c:1051
i = <optimized out>
#4 0x00005622b4bd0446 in AbortDDX (error=error@entry=EXIT_ERR_ABORT)
at ../../../../../../hw/xfree86/common/xf86Init.c:1095
i = <optimized out>
#5 0x00005622b4cfe0a2 in AbortServer () at ../../../../os/log.c:874
No locals.
#6 0x00005622b4cfeee5 in FatalError (f=f@entry=0x5622b4d32970 "Caught signal %d (%s). Server aborting\n")
at ../../../../os/log.c:1015
args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffdba08ba0, reg_save_area = 0x7fffdba08ad0}}
args2 = {{gp_offset = 8, fp_offset = 48, overflow_arg_area = 0x7fffdba08ba0, reg_save_area = 0x7fffdba08ad0}}
beenhere = 1
#7 0x00005622b4cf569e in OsSigHandler (signo=11, sip=<optimized out>, unused=<optimized out>)
at ../../../../os/osinit.c:154
unused = <optimized out>
sip = <optimized out>
signo = 11
#8 <signal handler called>
No locals.
#9 __GI___libc_free (mem=0x80) at malloc.c:3103
ar_ptr = <optimized out>
p = <optimized out>
hook = 0x0
mem = 0x80
ar_ptr = <optimized out>
p = <optimized out>
hook = <optimized out>
__x = <optimized out>
ar_ptr = <optimized out>
p = <optimized out>
hook = 0x0
__x = <optimized out>
#10 0x00005622b4ba90c4 in xi2mask_free (mask=mask@entry=0x5622b68b0b80) at ../../../../dix/inpututils.c:1100
No locals.
#11 0x00005622b4ba60a4 in FreeGrab (pGrab=0x5622b68b0b10) at ../../../../dix/grabs.c:263
No locals.
#12 0x00005622b4c8910b in ProcXIUngrabDevice (client=0x5622b6f37ba0) at ../../../../Xi/xigrabdev.c:169
dev = 0x5622b6017700
grab = 0x5622b68b0b10
ret = 0
time = <optimized out>
stuff = <optimized out>
#13 0x00005622b4b8be98 in Dispatch () at ../../../../dix/dispatch.c:479
result = <optimized out>
client = <optimized out>
start_tick = 57610
#14 0x00005622b4b8fee0 in dix_main (argc=11, argv=0x7fffdba093c8, envp=<optimized out>) at ../../../../dix/main.c:287
i = <optimized out>
alwaysCheckForInput = {0, 1}
#15 0x00007fabbd7e5b97 in __libc_start_main (main=0x5622b4b79b50 <main>, argc=11, argv=0x7fffdba093c8,
init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffdba093b8)
at ../csu/libc-start.c:310
self = <optimized out>
__self = <optimized out>
result = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -2770218526701926453, 94707060808544, 140736878121920, 0, 0,
-8487902057570121781, -8458842357984933941}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0,
0x7fabc02ef733 <_dl_init+259>, 0x7fabc02dd438}, data = {prev = 0x0, cleanup = 0x0,
canceltype = -1070663885}}}
not_first_call = <optimized out>
#16 0x00005622b4b79b8a in _start ()
No symbol table info available.
(gdb) thread apply all bt
Thread 2 (Thread 0x7fabb5d33700 (LWP 27993)):
#0 __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1 0x00007fabbdbbf098 in __GI___pthread_mutex_lock (mutex=mutex@entry=0x5622b4f8a100 <input_mutex>)
at ../nptl/pthread_mutex_lock.c:113
#2 0x00005622b4cf3780 in input_lock () at ../../../../os/inputthread.c:113
#3 0x00005622b4cf3a11 in InputReady (fd=22, xevents=1, data=0x5622b620ff50) at ../../../../os/inputthread.c:178
#4 0x00005622b4cf6121 in ospoll_wait (ospoll=0x5622b6022420, timeout=timeout@entry=-1)
at ../../../../os/ospoll.c:412
#5 0x00005622b4cf386e in InputThreadDoWork (arg=<optimized out>) at ../../../../os/inputthread.c:367
#6 0x00007fabbdbbc6db in start_thread (arg=0x7fabb5d33700) at pthread_create.c:463
#7 0x00007fabbd8e588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7fabc04d9600 (LWP 27990)):
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1 0x00007fabbd804801 in __GI_abort () at abort.c:79
#2 0x00005622b4cf85aa in OsAbort () at ../../../../os/utils.c:1361
#3 0x00005622b4bd038c in ddxGiveUp (error=error@entry=EXIT_ERR_ABORT)
at ../../../../../../hw/xfree86/common/xf86Init.c:1051
#4 0x00005622b4bd0446 in AbortDDX (error=error@entry=EXIT_ERR_ABORT)
at ../../../../../../hw/xfree86/common/xf86Init.c:1095
#5 0x00005622b4cfe0a2 in AbortServer () at ../../../../os/log.c:874
#6 0x00005622b4cfeee5 in FatalError (f=f@entry=0x5622b4d32970 "Caught signal %d (%s). Server aborting\n")
at ../../../../os/log.c:1015
#7 0x00005622b4cf569e in OsSigHandler (signo=11, sip=<optimized out>, unused=<optimized out>)
at ../../../../os/osinit.c:154
#8 <signal handler called>
#9 __GI___libc_free (mem=0x80) at malloc.c:3103
#10 0x00005622b4ba90c4 in xi2mask_free (mask=mask@entry=0x5622b68b0b80) at ../../../../dix/inpututils.c:1100
#11 0x00005622b4ba60a4 in FreeGrab (pGrab=0x5622b68b0b10) at ../../../../dix/grabs.c:263
#12 0x00005622b4c8910b in ProcXIUngrabDevice (client=0x5622b6f37ba0) at ../../../../Xi/xigrabdev.c:169
#13 0x00005622b4b8be98 in Dispatch () at ../../../../dix/dispatch.c:479
#14 0x00005622b4b8fee0 in dix_main (argc=11, argv=0x7fffdba093c8, envp=<optimized out>) at ../../../../dix/main.c:287
#15 0x00007fabbd7e5b97 in __libc_start_main (main=0x5622b4b79b50 <main>, argc=11, argv=0x7fffdba093c8,
init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffdba093b8)
at ../csu/libc-start.c:310
#16 0x00005622b4b79b8a in _start ()
(gdb) quitplease let me know if you need any additional information
i don't mind researching further if pointed in the right direction
examining other issues it may be related to #7 (closed)