Hi, I've got a confirmed race-condition in evdev.c (the driver for inputX) that others might be interested in.
The race-condition will result in an oops (see below), and then (in my case) most of the USB-subsystem dies. I'm going to see if I can't create a patch for this, and in the meantime I can only recommend two things if you are affected by this (if you're not, be happy): 1) Don't unplug your tablet/suspend your computer (these are the two cases the oops happends for me). 2) Use my wacomproxy kernelmodule; http://195.38.3.2/linuxprojs/ /Magnus usb 2-1: USB disconnect, address 2 Unable to handle kernel paging request at virtual address 00100100 printing eip: e0c6539f *pde = 0e662067 *pte = 00000000 Oops: 0000 [#1] PREEMPT Modules linked in: binfmt_misc rfcomm l2cap bluetooth xt_tcpudp xt_state ipt_REJECT xt_limit ipt_LOG ip_conntrack_irc ip_conntrack_ftp ip_conntrack nfnetlink iptable_filter ip_tables x_tables thermal processor fan button battery ac dm_mod md_mod tabletsdev usbhid wacom tsdev joydev b44 sworks_agp amd_k7_agp ali_agp sbp2 mii ohci1394 yenta_socket rsrc_nonstatic pcmcia firmware_class pcmcia_core sis_agp snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss ati_agp psmouse serio_raw evdev uhci_hcd snd_mixer_oss snd_pcm snd_timer nvidia_agp via_agp pcspkr rtc snd soundcore snd_page_alloc intel_agp agpgart shpchp pci_hotplug CPU: 0 EIP: 0060:[<e0c6539f>] Not tainted VLI EFLAGS: 00210292 (2.6.16.4 #1) EIP is at evdev_disconnect+0x84/0xa9 [evdev] eax: 00000000 ebx: 000ffcf0 ecx: cfe5c000 edx: c1558000 esi: dee4e9c0 edi: df782800 ebp: dee4e978 esp: c1559e94 ds: 007b es: 007b ss: 0068 Process khubd (pid: 108, threadinfo=c1558000 task=c15b3a90) Stack: <0>dee4e9dc dee4e978 c02ed09e dee4e9dc dee4eb40 def25800 e0d49de4 def25814 e0d47068 df782800 dee4eac0 def25800 e0d49dc0 c02d6d99 def25800 def2587c def25814 c027d739 def25814 def25814 00000000 c03efa80 c027d8fb def25814 Call Trace: [<c02ed09e>] input_unregister_device+0x55/0xe1 [<e0d47068>] wacom_disconnect+0x2d/0x59 [wacom] [<c02d6d99>] usb_unbind_interface+0x36/0x6f [<c027d739>] __device_release_driver+0x55/0x6b [<c027d8fb>] device_release_driver+0x18/0x26 [<c027d19d>] bus_remove_device+0x74/0x8c [<c027c62c>] device_del+0x39/0x65 [<c02d60d4>] usb_disable_device+0x6a/0xd4 [<c02d233c>] usb_disconnect+0x7c/0xe2 [<c02d30a5>] hub_thread+0x37a/0xa42 [<c011000a>] io_apic_set_pci_routing+0x1d1/0x293 [<c01263bc>] autoremove_wake_function+0x0/0x3a [<c012634c>] kthread+0x96/0xd7 [<c02d2d2b>] hub_thread+0x0/0xa42 [<c0126360>] kthread+0xaa/0xd7 [<c01262b6>] kthread+0x0/0xd7 [<c0101005>] kernel_thread_helper+0x5/0xb Code: 81 eb 10 04 00 00 5a eb 22 8d 83 08 04 00 00 68 06 00 02 00 6a 1d 50 e8 9f 11 50 df 8b 9b 10 04 00 00 81 eb 10 04 00 00 83 c4 0c <8b> 83 10 04 00 00 0f 18 00 90 8d 93 10 04 00 00 8d 46 4c 39 c2 ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Linuxwacom-discuss mailing list Linuxwacom-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-discuss
