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dix: don't push the XKB state to a non-existing master keyboard

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If our master keyboard is disabled, GetMaster() returns NULL and
we segfault in XkbPushLockedStateToSlaves().

Fixes 45fb3a934d
Fixes #1611

(cherry picked from commit 9b983fecf9)

Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1702>
This commit is contained in:
Peter Hutterer 2024-01-30 10:44:58 +10:00 • committed by Olivier Fourdan
parent 11d0f4f19d
commit 13cfe2ec85
1 changed files with 4 additions and 1 deletions
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5
dix/devices.c
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@ -2699,11 +2699,14 @@ AttachDevice(ClientPtr client, DeviceIntPtr dev, DeviceIntPtr master)
dev->spriteInfo->paired = dev;
}
else {
DeviceIntPtr keyboard = GetMaster(dev, MASTER_KEYBOARD);
dev->spriteInfo->sprite = master->spriteInfo->sprite;
dev->spriteInfo->paired = master;
dev->spriteInfo->spriteOwner = FALSE;
XkbPushLockedStateToSlaves(GetMaster(dev, MASTER_KEYBOARD), 0, 0);
if (keyboard)
XkbPushLockedStateToSlaves(keyboard, 0, 0);
RecalculateMasterButtons(master);
}