Distribution:ubuntu breezy Hardware Environment:USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI + EHCI If usb enabled computer get this message and freez. [ 109.151745] ACPI: PCI Interrupt 0000:00:1d.7[A] -> GSI 20 (level, low) -> IRQ 50 [ 109.249276] ehci_hcd 0000:00:1d.7: EHCI Host Controller [ 109.318070] ehci_hcd 0000:00:1d.7: debug port 1 [ 109.395774] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 5 [ 109.493186] ehci_hcd 0000:00:1d.7: irq 50, io mem 0xcfdffc00 [ 109.571571] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 109.674468] usb usb5: configuration #1 chosen from 1 choice [ 109.750324] hub 5-0:1.0: USB hub found [ 109.811059] hub 5-0:1.0: 8 ports detected [ 109.863784] usb 2-1: USB disconnect, address 2 [ 109.922265] general protection fault: 0000 [1] [ 109.981745] CPU 0 [ 110.008046] Modules linked in: ehci_hcd snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd snd_page_alloc nls_cp437 vfat fat nls_utf8 ntfs unix [ 110.205881] Pid: 109, comm: khubd Not tainted 2.6.15-mm4 #1 [ 110.279066] RIP: 0010:[<ffffffff8025aa65>] <ffffffff8025aa65>{device_del+57} [ 110.369406] RSP: 0018:ffff81003f45bda8 EFLAGS: 00010202 [ 110.441450] RAX: 001c200000000004 RBX: ffff81003f4e0420 RCX: 0000000000000034[ 110.535219] RDX: ffff81003f0b3ec8 RSI: ffffffff801d5edd RDI: ffff81003f4e0420[ 110.628989] RBP: ffff81003f5b9088 R08: 0000000000000000 R09: ffff81003f45bcf8[ 110.722760] R10: ffff81003f45a000 R11: ffff81003f4e0420 R12: ffff81003f5b9000[ 110.816530] R13: ffff81003f4e0420 R14: ffff81003f5b9c48 R15: ffff81003f5b9800[ 110.910301] FS: 0000000000000000(0000) GS:ffffffff80517000(0000) knlGS:0000000000000000 [ 111.016650] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 111.092124] CR2: 00002aaaaadf6a90 CR3: 000000003d280000 CR4: 00000000000006e0[ 111.185895] Process khubd (pid: 109, threadinfo ffff81003f45a000, task ffff81003f487730) [ 111.292241] Stack: ffff81003f0a1cc8 ffff81003f4e0400 0000000000000000 ffffffff802a0da3 [ 111.395160] ffff81003f45a000 ffff81003f5b9000 ffff81003f5b94c8 00000000ffffffff [ 111.500366] 0000000000000010 ffffffff8029bca3 [ 111.566690] Call Trace: <ffffffff802a0da3>{usb_disable_device+133} [ 111.647883] <ffffffff8029bca3>{usb_disconnect+147} <ffffffff8029d959>{hub_thread+856} [ 111.758806] <ffffffff8012000a>{sys32_uname+2} <ffffffff8013acee>{autoremove_wake_function+0} [ 111.877734] <ffffffff8013acee>{autoremove_wake_function+0} <ffffffff8029d601>{hub_thread+0} [ 111.995518] <ffffffff8013a8ae>{kthread+207} <ffffffff80137ec7>{worker_thread+0} [ 112.099580] <ffffffff8010f122>{child_rip+8} <ffffffff80137ec7>{worker_thread+0} [ 112.203644] <ffffffff8013a8da>{keventd_create_kthread+0} <ffffffff8013a7df>{kthread+0} [ 112.315710] <ffffffff8010f11a>{child_rip+0} [ 112.380892] [ 112.380892] Code: ff d0 48 89 df e8 76 0c 00 00 48 89 df 48 81 c3 d0 00 00 00 [ 112.495245] RIP <ffffffff8025aa65>{device_del+57} RSP <ffff81003f45bda8> [ 112.583299] BUG: khubd/109, lock held at task exit time! [ 112.654528] [ffff81003f5b99f8] {device_initialize} [ 112.718564] .. held by: khubd: 109 [ffff81003f487730, 110] [ 112.805466] ... acquired at: locktree+0x25/0x70
Created attachment 7026 [details] minicom capture
Created attachment 7027 [details] lspci
It's entirely possible that this is not a USB problem. I get the impression that the fault occurred at the line in driver_del() where platform_notify_remove() is called. You can try commenting out that call, and maybe sprinkling some printk statements throughout the region to see how if that really is the problem.
Does this happen with 2.6.15 or 2.6.16-rc1?
> 2.6.16-rc1 I don't know any thing about this kernel, is it already out? > 2.6.15 - 2.6.15-mm3 ? No. Only 2.6.15-mm4
Will be in a day or so. How about 2.6.15-git12?
Latest git or 2.6.16-rc1 is working.
Great, marking closed then.