| Summary: | XGL crashes with evdev mouse due to too many buttons | ||||||||
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| Product: | xorg | Reporter: | Sven Lilienthal <bugs> | ||||||
| Component: | Server/Acceleration/XGL | Assignee: | David Reveman <reveman> | ||||||
| Status: | RESOLVED WONTFIX | QA Contact: | Xorg Project Team <xorg-team> | ||||||
| Severity: | critical | ||||||||
| Priority: | high | CC: | mark | ||||||
| Version: | git | Keywords: | have-backtrace | ||||||
| Hardware: | x86 (IA32) | ||||||||
| OS: | Linux (All) | ||||||||
| Whiteboard: | |||||||||
| i915 platform: | i915 features: | ||||||||
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Sorry about the phenomenal bug spam, guys. Adding xorg-team@ to the QA contact so bugs don't get lost in future. I can partially confirm, and reproduce this bug. Not sure if it only involves XGL. Nor am I sure if it can be fixed as proposed elsewhere in the bug comments. When I perform "X" from the command line, the submitted strace occurs using the following configuration after which X segfaults (or so the strace says..). Originally I suspected it to be my own fault due to custom CFLAGS, but I can reproduce this on more than one linux distribution (gentoo and archlinux) which removes that possibility. Section "InputDevice" Identifier "TrackManOptical" Driver "evdev" Option "Protocol" "Auto" # cat /proc/bus/input/devices Option "Dev Name" "Logitech USB Receiver" Option "Dev Phys" "usb-0000:00:02.1-3/input0" # May use /dev/input/mice instead, but I have two USB mice. Option "Device" "/dev/input/event2" Option "Buttons" "10" Option "ZAxisMapping" "4 5 6 7 8 9 10" # This will make the button 8 the "lock" modifier. Option "DragLockButtons" "8" Option "AngleOffset" "-7" EndSection Created attachment 10449 [details]
strace output on archlinux compiled for x86
Created attachment 10450 [details]
strace output on archlinux compiled for x86
(This time uploaded with proper headers)
The bug can _not_ be reproduced by: Section "InputDevice" Identifier "Keyboard1" Driver "evdev" Option "Protocol" "evdev" Option "Device" "/dev/input/event0" Option "XkbModel" "microsoftnek4k" Option "XkbLayout" "dvorak" Option "XkbOptions" "ctrl:swapcaps,altwin:super_win" #Option "XkbOptions" "ctrl:swapcaps" EndSection Because when commenting out the mouse section, but not this section, X does load. Mass closure: XGL is gone, these are never getting fixed. |
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When starting Xgl, it segfaults. Bugs seems to be caused by evdev recognizing my keyboard and mouse not 100% correctly and assigning the multimedia-keys of my keyboard as mouse buttons, resulting in 99 buttons. MAX_BUTTONS is set to 64 in hw/xgl/glx/xglx.c , setting it to 99 fixes this bug. Stack trace: (gdb) start :1 Breakpoint 1 at 0x80a7ae0: file main.c, line 255. Starting program: /opt/Xgl/bin/Xgl :1 main (argc=2, argv=0xbfc7d444, envp=0xbfc7d450) at main.c:255 255 display = "0"; (gdb) continue Continuing. [Thread debugging using libthread_db enabled] [New Thread -1211271488 (LWP 32351)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1211271488 (LWP 32351)] 0x080863ab in InitButtonClassDeviceStruct (dev=0x44434241, numButtons=99, map=0xbfc7d2e7 "") at devices.c:590 590 dev->button = butc; (gdb) bt #0 0x080863ab in InitButtonClassDeviceStruct (dev=0x44434241, numButtons=99, map=0xbfc7d2e7 "") at devices.c:590 #1 0x08086b43 in InitPointerDeviceStruct (device=0x44434241, map=0xbfc7d2e7 "", numButtons=99, motionProc=0x81190fa <miPointerGetMotionEvents>, controlProc=0xb798f16e <xglxChangePointerControl>, numMotionEvents=256) at devices.c:813 #2 0xb798f282 in xglxPointerProc (pDevice=0x82f8bc8, onoff=0) at xglx.c:1325 #3 0x08085376 in InitAndStartDevices () at devices.c:177 #4 0x080a7fdf in main (argc=2, argv=0xbfc7d444, envp=0xbfc7d450) at main.c:400