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Date: Sun, 04 Mar 2007 23:43:02 -0500 From: Mark Lord <lkml@....ca> To: Greg KH <greg@...ah.com> Cc: Adrian Bunk <bunk@...sta.de>, Andrew Morton <akpm@...ux-foundation.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [BUG} usb regression in 2.6.21-rc2-git3 Mark Lord wrote: > > Here's another one for Greg: > > I have a Targus USB 1.1 "dock", basically a hub with built-in > serial, parallel, PS/2 KB, PS/2 Mouse, and extra USB ports. > > Simply connecting, and then disconnecting it causes an oops with > 2.6.21-rc2: .. Same behaviour with a second, different USB 1.1 "dock" here as well: Mar 4 23:40:16 silvy kernel: usb 5-8: new high speed USB device using ehci_hcd and address 5 Mar 4 23:40:16 silvy kernel: usb 5-8: configuration #1 chosen from 1 choice Mar 4 23:40:16 silvy kernel: hub 5-8:1.0: USB hub found Mar 4 23:40:16 silvy kernel: hub 5-8:1.0: 4 ports detected Mar 4 23:40:16 silvy kernel: usb 5-8.4: new full speed USB device using ehci_hcd and address 6 Mar 4 23:40:17 silvy kernel: usb 5-8.4: configuration #1 chosen from 1 choice Mar 4 23:40:17 silvy kernel: hub 5-8.4:1.0: USB hub found Mar 4 23:40:17 silvy kernel: hub 5-8.4:1.0: 4 ports detected Mar 4 23:40:17 silvy kernel: usb 5-8.4.1: new full speed USB device using ehci_hcd and address 7 Mar 4 23:40:17 silvy kernel: usb 5-8.4.1: configuration #1 chosen from 1 choice Mar 4 23:40:17 silvy kernel: usb 5-8.4.3: new low speed USB device using ehci_hcd and address 8 Mar 4 23:40:17 silvy kernel: usb 5-8.4.3: configuration #1 chosen from 1 choice Mar 4 23:40:17 silvy kernel: input: Composite USB PS2 Converter USB to PS2 Adaptor v1.12 as /class/input/input8 Mar 4 23:40:17 silvy kernel: input: USB HID v1.10 Keyboard [Composite USB PS2 Converter USB to PS2 Adaptor v1.12] on usb-0000:00:1d.7-8.4.3 Mar 4 23:40:17 silvy kernel: input: Composite USB PS2 Converter USB to PS2 Adaptor v1.12 as /class/input/input9 Mar 4 23:40:17 silvy kernel: input: USB HID v1.10 Mouse [Composite USB PS2 Converter USB to PS2 Adaptor v1.12] on usb-0000:00:1d.7-8.4.3 Mar 4 23:40:17 silvy kernel: usb 5-8.4.4: new full speed USB device using ehci_hcd and address 9 Mar 4 23:40:17 silvy kernel: usb 5-8.4.4: configuration #1 chosen from 1 choice Mar 4 23:40:17 silvy kernel: pl2303 5-8.4.4:1.0: pl2303 converter detected Mar 4 23:40:17 silvy kernel: usb-serial ttyUSB0: Error registering port device, continuing Mar 4 23:40:17 silvy kernel: drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 7 if 0 alt 1 proto 2 vid 0x0B39 pid 0x0801 Mar 4 23:40:17 silvy kernel: usbcore: registered new interface driver usblp Mar 4 23:40:17 silvy kernel: drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver Mar 4 23:41:05 silvy kernel: usb 5-8: USB disconnect, address 5 Mar 4 23:41:05 silvy kernel: usb 5-8.4: USB disconnect, address 6 Mar 4 23:41:05 silvy kernel: usb 5-8.4.1: USB disconnect, address 7 Mar 4 23:41:05 silvy kernel: drivers/usb/class/usblp.c: usblp0: removed Mar 4 23:41:05 silvy kernel: usb 5-8.4.3: USB disconnect, address 8 Mar 4 23:41:05 silvy kernel: usb 5-8.4.4: USB disconnect, address 9 Mar 4 23:41:05 silvy kernel: BUG: unable to handle kernel NULL pointer dereference at virtual address 0000000c Mar 4 23:41:05 silvy kernel: printing eip: Mar 4 23:41:05 silvy kernel: c027c251 Mar 4 23:41:05 silvy kernel: *pde = 00000000 Mar 4 23:41:05 silvy kernel: Oops: 0000 [#1] Mar 4 23:41:05 silvy kernel: PREEMPT Mar 4 23:41:05 silvy kernel: Modules linked in: usblp radeon drm nfsd exportfs lockd nfs_acl sunrpc acpi_cpufreq cpufreq_ondemand cpufreq_powersave cpufreq_userspace cpufreq_stats freq_table cpufreq_conservative ac fan button thermal video battery container processor rfcomm l2cap bluetooth cfq_iosched deflate zlib_deflate twofish twofish_common serpent blowfish des cbc ecb blkcipher aes xcbc sha256 sha1 crypto_null af_key af_packet sbp2 usbhid hid pl2303 usbserial mousedev pcmcia snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore ipw2200 ahci psmouse serio_raw pcspkr ieee80211 ieee80211_crypt sdhci mmc_core snd_page_alloc yenta_socket rsrc_nonstatic firmware_class ohci1394 ieee1394 b44 mii pcmcia_core intel_agp ehci_hcd uhci_hcd usbcore agpgart sg sr_mod cdrom unix Mar 4 23:41:05 silvy kernel: CPU: 0 Mar 4 23:41:05 silvy kernel: EIP: 0060:[klist_del+6/69] Not tainted VLI Mar 4 23:41:05 silvy kernel: EFLAGS: 00010286 (2.6.21-rc2-git3 #5) Mar 4 23:41:05 silvy kernel: EIP is at klist_del+0x6/0x45 Mar 4 23:41:05 silvy kernel: eax: 00000000 ebx: f6730a78 ecx: 00000001 edx: f63f5248 Mar 4 23:41:05 silvy kernel: esi: f6730a88 edi: f63f5240 ebp: f6706618 esp: f7ba7e00 Mar 4 23:41:05 silvy kernel: ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 Mar 4 23:41:05 silvy kernel: Process khubd (pid: 1925, ti=f7ba6000 task=f7c275e0 task.ti=f7ba6000) Mar 4 23:41:05 silvy kernel: Stack: f6730a78 00000001 c01fb571 f6730a78 00000001 f63f5240 00000000 c01fb6f2 Mar 4 23:41:05 silvy kernel: f63f5240 f89ffd0e fffffffe f6c62a40 f63f5240 f63f5240 f63f5274 f89ffc8e Mar 4 23:41:05 silvy kernel: f63f5240 f6706618 c01aafd5 00000202 00000000 f6730a00 f63f5240 f6730a00 Mar 4 23:41:05 silvy kernel: Call Trace: Mar 4 23:41:05 silvy kernel: [device_del+21/398] device_del+0x15/0x18e Mar 4 23:41:05 silvy kernel: [device_unregister+8/16] device_unregister+0x8/0x10 Mar 4 23:41:05 silvy kernel: [<f89ffd0e>] destroy_serial+0x80/0xcc [usbserial] Mar 4 23:41:05 silvy kernel: [<f89ffc8e>] destroy_serial+0x0/0xcc [usbserial] Mar 4 23:41:05 silvy kernel: [kref_put+95/110] kref_put+0x5f/0x6e Mar 4 23:41:05 silvy kernel: [<f89ff7f7>] usb_serial_disconnect+0x81/0xaa [usbserial] Mar 4 23:41:05 silvy kernel: [kref_put+95/110] kref_put+0x5f/0x6e Mar 4 23:41:05 silvy kernel: [<f887fcc8>] usb_unbind_interface+0x2a/0x59 [usbcore] Mar 4 23:41:05 silvy kernel: [__device_release_driver+110/139] __device_release_driver+0x6e/0x8b Mar 4 23:41:05 silvy kernel: [device_release_driver+29/50] device_release_driver+0x1d/0x32 Mar 4 23:41:05 silvy kernel: [bus_remove_device+113/129] bus_remove_device+0x71/0x81 Mar 4 23:41:05 silvy kernel: [device_del+308/398] device_del+0x134/0x18e Mar 4 23:41:05 silvy kernel: [<f887e54c>] usb_disable_device+0x5c/0xbb [usbcore] Mar 4 23:41:05 silvy kernel: [<f887afdb>] usb_disconnect+0x82/0x104 [usbcore] Mar 4 23:41:05 silvy kernel: [<f887afc9>] usb_disconnect+0x70/0x104 [usbcore] Mar 4 23:41:05 silvy kernel: [<f887afc9>] usb_disconnect+0x70/0x104 [usbcore] Mar 4 23:41:05 silvy kernel: [<f887b9c8>] hub_thread+0x30b/0x9db [usbcore] Mar 4 23:41:05 silvy kernel: [__activate_task+28/40] __activate_task+0x1c/0x28 Mar 4 23:41:05 silvy kernel: [autoremove_wake_function+0/51] autoremove_wake_function+0x0/0x33 Mar 4 23:41:05 silvy kernel: [<f887b6bd>] hub_thread+0x0/0x9db [usbcore] Mar 4 23:41:05 silvy kernel: [kthread+155/191] kthread+0x9b/0xbf Mar 4 23:41:05 silvy kernel: [kthread+0/191] kthread+0x0/0xbf Mar 4 23:41:05 silvy kernel: [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10 Mar 4 23:41:05 silvy kernel: ======================= Mar 4 23:41:05 silvy kernel: Code: 8b 4b 04 8d 46 04 89 43 04 89 5e 04 89 48 04 89 01 ff 4a 14 8b 42 08 a8 08 74 07 5b 5e e9 83 09 00 00 5b 5e c3 56 89 c6 53 8b 00 <8b> 58 0c 89 e0 25 00 e0 ff ff ff 40 14 89 f0 e8 f5 fe ff ff 85 Mar 4 23:41:05 silvy kernel: EIP: [klist_del+6/69] klist_del+0x6/0x45 SS:ESP 0068:f7ba7e00 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at 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