Bug 77884

Summary: crash in mieqMoveToNewScreen with xorg 1.15.1 when vt switching with while hammering on the touchpad
Product: xorg Reporter: Maarten Lankhorst <bugs>
Component: Server/Input/CoreAssignee: Peter Hutterer <peter.hutterer>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium CC: peter.hutterer
Version: unspecified   
Hardware: Other   
OS: All   
See Also: https://launchpad.net/bugs/1208473
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
0001-mi-don-t-process-events-from-disabled-devices-77884.patch none

Description Maarten Lankhorst 2014-04-24 10:10:20 UTC 
To reproduce:
- Run xorg-server in valgrind to slow it down enough.
- Hammer on the touchpad like a madman.
- ssh in and chvt away while hammering.
- Observe the following crash in X.org:

[  2444.985] (EE) BUG: triggered 'if (!dev->spriteInfo->sprite)'
[  2444.987] (EE) BUG: ../../mi/mieq.c:497 in mieqMoveToNewScreen()
[  2444.989] (EE)
[  2444.991] (EE) Backtrace:
[  2445.012] (EE) 0: /usr/bin/Xorg (mieqProcessDeviceEvent+0x114) [0x2932b4]
[  2445.019] (EE) 1: /usr/bin/Xorg (mieqProcessInputEvents+0xf7) [0x293447]
[  2445.027] (EE) 2: /usr/bin/Xorg (ProcessInputEvents+0x9) [0x19b159]
[  2445.037] (EE) 3: /usr/bin/Xorg (xf86VTSwitch+0x365) [0x19ba75]
[  2445.046] (EE) 4: /usr/bin/Xorg (WakeupHandler+0x6d) [0x1625ad]
[  2445.056] (EE) 5: /usr/bin/Xorg (WaitForSomething+0x1bf) [0x2ae48f]
[  2445.065] (EE) 6: /usr/bin/Xorg (SendErrorToClient+0xe1) [0x15d9d1]
[  2445.073] (EE) 7: /usr/bin/Xorg (remove_fs_handlers+0x40a) [0x161afa]
[  2445.079] (EE) 8: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x6f6dec5]
[  2445.088] (EE) 9: /usr/bin/Xorg (_start+0x29) [0x14cfee]
[  2445.093] (EE) 10: ? (?+0x29) [0x29]
[  2445.094] (EE)
Comment 1 Peter Hutterer 2014-05-20 04:28:27 UTC 
Created attachment 99376 [details] [review]
0001-mi-don-t-process-events-from-disabled-devices-77884.patch
Comment 2 Timo Aaltonen 2015-07-07 09:38:00 UTC 
seems this patch is in 1.17 at least, and seems to be working.. so closing

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.