Public bug reported: I've just bought a dual serial to USB adaptor. It uses a MosChip Semiconductor USB to Serial Adapter. When I plug in the device the mos7720 module loads OK but as soon as I try to open ttyUSB0 (with minicom) it generates the oops below. I'm running this on Feisty Beta with all updates applied (does that now mean it's Feisty released rather than beta?). The Machine is a Intel Core 2 Dual E6400, a ASUS P5B-E motherboard, and has 4Gb of RAM. For other reasons, I've currenly got it only using 3Gb of RAM.
I've run this test twice, once with SMP and once with the "nosmp" kernel param. Before I list various outputs, this could be the same as bug 97310 or 98701. But the moz7720 driver seems to be a fairly recent addition so I'm not sure. It was only added mid 2006 as seen in this thread: http://lkml.org/lkml/2006/8/29/36 Once I've submitted this bug report I'll let the writer mentioned in that mos7720 thread know I've submitted this too, but as I'm not really much of a kernel maintainer I figured it'd be better this get fed up through the distro I'm using. Here's the messages log from the insertion of the USB device until the oops on starting minicom with SMP enabled. Apr 21 20:08:05 titus kernel: [ 146.181858] usb 1-1: new full speed USB device using uhci_hcd and address 2 Apr 21 20:08:05 titus kernel: [ 146.362533] usb 1-1: configuration #1 chosen from 1 choice Apr 21 20:08:05 titus kernel: [ 146.431884] usbcore: registered new interface driver usbserial Apr 21 20:08:05 titus kernel: [ 146.431896] drivers/usb/serial/usb-serial.c: USB Serial support registered for generic Apr 21 20:08:05 titus kernel: [ 146.431923] usbcore: registered new interface driver usbserial_generic Apr 21 20:08:05 titus kernel: [ 146.431924] drivers/usb/serial/usb-serial.c: USB Serial Driver core Apr 21 20:08:05 titus kernel: [ 146.443317] drivers/usb/serial/usb-serial.c: USB Serial support registered for Moschip 2 port adapter Apr 21 20:08:05 titus kernel: [ 146.443321] drivers/usb/serial/mos7720.c: Moschip USB Serial Driver 1.0.0.4F Apr 21 20:08:05 titus kernel: [ 146.443345] moschip7720 1-1:1.0: Moschip 2 port adapter converter detected Apr 21 20:08:05 titus kernel: [ 146.447407] usb 1-1: Moschip 2 port adapter converter now attached to ttyUSB0 Apr 21 20:08:05 titus kernel: [ 146.447450] usb 1-1: Moschip 2 port adapter converter now attached to ttyUSB1 Apr 21 20:08:05 titus kernel: [ 146.447458] usbcore: registered new interface driver moschip7720 Apr 21 20:08:15 titus kernel: [ 164.466667] [drm] Setting GART location based on new memory map Apr 21 20:08:15 titus kernel: [ 164.467076] [drm] Loading R300 Microcode Apr 21 20:08:15 titus kernel: [ 164.467104] [drm] writeback test succeeded in 1 usecs Apr 21 20:09:18 titus kernel: [ 227.121875] PGD b6b41067 PUD b6b42067 PMD 0 Apr 21 20:09:18 titus kernel: [ 227.121882] CPU 0 Apr 21 20:09:18 titus kernel: [ 227.121884] Modules linked in: mos7720 usbserial binfmt_misc rfcomm l2cap bluetooth nfs nfsd exportfs lockd sunrpc radeon drm ppdev cpufreq_userspace cpufreq_powersave cpufreq_conservative cpufreq_ondemand cpufreq_stats freq_table nls_iso8859_1 nls_cp437 vfat fat fuse sbp2 parport_pc lp parport af_packet snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss usblp snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device sr_mod cdrom snd sky2 soundcore ata_generic psmouse iTCO_wdt iTCO_vendor_support intel_agp generic serio_raw snd_page_alloc shpchp pci_hotplug tsdev evdev ext3 jbd mbcache sg sd_mod ehci_hcd ohci1394 pata_jmicron uhci_hcd pata_it821x ieee1394 ahci libata scsi_mod usbcore raid1 md_mod dm_mod fbcon tileblit font bitblit softcursor vesafb cfbcopyarea cfbimgblt cfbfillrect capability commoncap Apr 21 20:09:18 titus kernel: [ 227.121947] Pid: 6257, comm: minicom Not tainted 2.6.20-15-server #2 Apr 21 20:09:18 titus kernel: [ 227.121950] RIP: 0010:[_end+132728563/2130038908] [_end+132728563/2130038908] :mos7720:mos7720_open+0x407/0x5a0 Apr 21 20:09:18 titus kernel: [ 227.121956] RSP: 0018:ffff8100b1c85d58 EFLAGS: 00010202 Apr 21 20:09:18 titus kernel: [ 227.121959] RAX: 0000000040000280 RBX: ffff8100b2bfc400 RCX: ffff8100b2b77800 Apr 21 20:09:18 titus kernel: [ 227.121962] RDX: 0000000000000000 RSI: ffffffff8807d2c0 RDI: 0000000000000000 Apr 21 20:09:18 titus kernel: [ 227.121965] RBP: ffff8100b1c85d6f R08: ffff8100b1c84000 R09: 0000000000000000 Apr 21 20:09:18 titus kernel: [ 227.121968] R10: ffff8100bb85e140 R11: 0000000000000000 R12: ffff8100b2bfc400 Apr 21 20:09:18 titus kernel: [ 227.121972] R13: ffff8100b2ce9bc0 R14: ffff8100b2b29180 R15: ffff8100b71f4f00 Apr 21 20:09:18 titus kernel: [ 227.121975] FS: 00002acd7449eb00(0000) GS:ffffffff80562000(0000) knlGS:0000000000000000 Apr 21 20:09:18 titus kernel: [ 227.121978] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 21 20:09:18 titus kernel: [ 227.121981] CR2: 0000000000000078 CR3: 00000000b1cba000 CR4: 00000000000006e0 Apr 21 20:09:18 titus kernel: [ 227.121985] Process minicom (pid: 6257, threadinfo ffff8100b1c84000, task ffff8100bb97c080) Apr 21 20:09:18 titus kernel: [ 227.121987] Stack: ffff8100b2bfc400 ffff8100b2cceff0 0c00000000000282 ffff8100b2bfc400 Apr 21 20:09:18 titus kernel: [ 227.121994] ffff8100b2ce9bc0 ffff8100b14d8000 ffff8100b2bfc418 00000000ffffffed Apr 21 20:09:18 titus kernel: [ 227.121999] ffff8100bb981a80 ffffffff8852a2f8 ffff8100b14fd000 000000000bc00000 Apr 21 20:09:18 titus kernel: [ 227.122003] Call Trace: Apr 21 20:09:18 titus kernel: [ 227.122016] [_end+132674420/2130038908] :usbserial:serial_open+0x118/0x190 Apr 21 20:09:18 titus kernel: [ 227.122027] [tty_open+438/848] tty_open+0x1b6/0x350 Apr 21 20:09:18 titus kernel: [ 227.122035] [chrdev_open+386/480] chrdev_open+0x182/0x1e0 Apr 21 20:09:18 titus kernel: [ 227.122041] [chrdev_open+0/480] chrdev_open+0x0/0x1e0 Apr 21 20:09:18 titus kernel: [ 227.122046] [__dentry_open+252/496] __dentry_open+0xfc/0x1f0 Apr 21 20:09:18 titus kernel: [ 227.122053] [do_filp_open+45/64] do_filp_open+0x2d/0x40 Apr 21 20:09:18 titus kernel: [ 227.122061] [do_setitimer+365/1216] do_setitimer+0x16d/0x4c0 Apr 21 20:09:18 titus kernel: [ 227.122073] [do_sys_open+90/256] do_sys_open+0x5a/0x100 Apr 21 20:09:18 titus kernel: [ 227.122090] [system_call+126/131] system_call+0x7e/0x83 Apr 21 20:09:18 titus kernel: [ 227.122098] Apr 21 20:09:18 titus kernel: [ 227.122099] Apr 21 20:09:18 titus kernel: [ 227.122099] Code: 44 8b 47 78 09 c2 48 8b 43 38 c7 47 04 01 00 00 00 48 89 4f Apr 21 20:09:18 titus kernel: [ 227.122113] RSP <ffff8100b1c85d58> And again with SMP disabled: Apr 21 20:16:58 titus kernel: [ 164.839770] usb 1-1: new full speed USB device using uhci_hcd and address 2 Apr 21 20:16:58 titus kernel: [ 164.999527] usb 1-1: configuration #1 chosen from 1 choice Apr 21 20:16:58 titus kernel: [ 165.107183] usbcore: registered new interface driver usbserial Apr 21 20:16:58 titus kernel: [ 165.107193] drivers/usb/serial/usb-serial.c: USB Serial support registered for generic Apr 21 20:16:58 titus kernel: [ 165.107215] usbcore: registered new interface driver usbserial_generic Apr 21 20:16:58 titus kernel: [ 165.107216] drivers/usb/serial/usb-serial.c: USB Serial Driver core Apr 21 20:16:58 titus kernel: [ 165.118453] drivers/usb/serial/usb-serial.c: USB Serial support registered for Moschip 2 port adapter Apr 21 20:16:58 titus kernel: [ 165.118457] drivers/usb/serial/mos7720.c: Moschip USB Serial Driver 1.0.0.4F Apr 21 20:16:58 titus kernel: [ 165.118476] moschip7720 1-1:1.0: Moschip 2 port adapter converter detected Apr 21 20:16:58 titus kernel: [ 165.123330] usb 1-1: Moschip 2 port adapter converter now attached to ttyUSB0 Apr 21 20:16:58 titus kernel: [ 165.123377] usb 1-1: Moschip 2 port adapter converter now attached to ttyUSB1 Apr 21 20:16:58 titus kernel: [ 165.123387] usbcore: registered new interface driver moschip7720 Apr 21 20:18:00 titus kernel: [ 226.891271] PGD b6ef4067 PUD b21ae067 PMD 0 Apr 21 20:18:00 titus kernel: [ 226.891277] CPU 0 Apr 21 20:18:00 titus kernel: [ 226.891279] Modules linked in: mos7720 usbserial binfmt_misc rfcomm l2cap bluetooth nfs nfsd exportfs lockd sunrpc radeon drm ppdev cpufreq_userspace cpufreq_powersave cpufreq_conservative cpufreq_ondemand cpufreq_stats freq_table nls_iso8859_1 nls_cp437 vfat fat fuse sbp2 parport_pc lp parport af_packet snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event usblp snd_seq snd_timer snd_seq_device sky2 snd iTCO_wdt psmouse serio_raw iTCO_vendor_support soundcore snd_page_alloc intel_agp shpchp pci_hotplug tsdev evdev ext3 jbd mbcache sr_mod cdrom generic ata_generic sg sd_mod ohci1394 ieee1394 pata_it821x pata_jmicron ahci libata scsi_mod ehci_hcd uhci_hcd usbcore raid1 md_mod dm_mod fbcon tileblit font bitblit softcursor vesafb cfbcopyarea cfbimgblt cfbfillrect capability commoncap Apr 21 20:18:00 titus kernel: [ 226.891328] Pid: 6242, comm: minicom Not tainted 2.6.20-15-server #2 Apr 21 20:18:00 titus kernel: [ 226.891331] RIP: 0010:[_end+132728563/2130038908] [_end+132728563/2130038908] :mos7720:mos7720_open+0x407/0x5a0 Apr 21 20:18:00 titus kernel: [ 226.891337] RSP: 0018:ffff8100b77c9d58 EFLAGS: 00010202 Apr 21 20:18:00 titus kernel: [ 226.891340] RAX: 0000000040000280 RBX: ffff8100b5d7cc00 RCX: ffff8100b970e800 Apr 21 20:18:00 titus kernel: [ 226.891343] RDX: 0000000000000000 RSI: ffffffff8807d2c0 RDI: 0000000000000000 Apr 21 20:18:00 titus kernel: [ 226.891346] RBP: ffff8100b77c9d6f R08: ffff8100b77c8000 R09: 0000000000000000 Apr 21 20:18:00 titus kernel: [ 226.891349] R10: ffff810037d00240 R11: 0000000000000000 R12: ffff8100b5d7cc00 Apr 21 20:18:00 titus kernel: [ 226.891352] R13: ffff8100b664a540 R14: ffff8100b5d27dc0 R15: ffff8100b5da9660 Apr 21 20:18:00 titus kernel: [ 226.891355] FS: 00002abf788fbb00(0000) GS:ffffffff80562000(0000) knlGS:0000000000000000 Apr 21 20:18:00 titus kernel: [ 226.891358] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 21 20:18:00 titus kernel: [ 226.891361] CR2: 0000000000000078 CR3: 00000000b6e02000 CR4: 00000000000006e0 Apr 21 20:18:00 titus kernel: [ 226.891364] Process minicom (pid: 6242, threadinfo ffff8100b77c8000, task ffff8100b21a0140) Apr 21 20:18:00 titus kernel: [ 226.891366] Stack: ffff8100b5d7cc00 ffff8100b5d8eff0 0c00000000000282 ffff8100b5d7cc00 Apr 21 20:18:00 titus kernel: [ 226.891372] ffff8100b664a540 ffff8100b6dce800 ffff8100b5d7cc18 00000000ffffffed Apr 21 20:18:00 titus kernel: [ 226.891376] ffff8100b6fbb980 ffffffff8852a2f8 ffff8100b85ef000 000000000bc00000 Apr 21 20:18:00 titus kernel: [ 226.891380] Call Trace: Apr 21 20:18:00 titus kernel: [ 226.891393] [_end+132674420/2130038908] :usbserial:serial_open+0x118/0x190 Apr 21 20:18:00 titus kernel: [ 226.891413] [tty_open+438/848] tty_open+0x1b6/0x350 Apr 21 20:18:00 titus kernel: [ 226.891420] [chrdev_open+386/480] chrdev_open+0x182/0x1e0 Apr 21 20:18:00 titus kernel: [ 226.891424] [chrdev_open+0/480] chrdev_open+0x0/0x1e0 Apr 21 20:18:00 titus kernel: [ 226.891428] [__dentry_open+252/496] __dentry_open+0xfc/0x1f0 Apr 21 20:18:00 titus kernel: [ 226.891434] [do_filp_open+45/64] do_filp_open+0x2d/0x40 Apr 21 20:18:00 titus kernel: [ 226.891440] [do_setitimer+365/1216] do_setitimer+0x16d/0x4c0 Apr 21 20:18:00 titus kernel: [ 226.891449] [do_sys_open+90/256] do_sys_open+0x5a/0x100 Apr 21 20:18:00 titus kernel: [ 226.891454] [system_call+126/131] system_call+0x7e/0x83 Apr 21 20:18:00 titus kernel: [ 226.891463] Apr 21 20:18:00 titus kernel: [ 226.891464] Apr 21 20:18:00 titus kernel: [ 226.891464] Code: 44 8b 47 78 09 c2 48 8b 43 38 c7 47 04 01 00 00 00 48 89 4f Apr 21 20:18:00 titus kernel: [ 226.891475] RSP <ffff8100b77c9d58> Here's the output of lsusb Bus 007 Device 001: ID 0000:0000 Bus 006 Device 001: ID 0000:0000 Bus 005 Device 001: ID 0000:0000 Bus 004 Device 003: ID 03f0:4f11 Hewlett-Packard Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 002: ID 9710:7720 MosChip Semiconductor Bus 001 Device 001: ID 0000:0000 And the output of: lsusb -vd 9710:7720 Bus 001 Device 002: ID 9710:7720 MosChip Semiconductor Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 0 bDeviceProtocol 255 bMaxPacketSize0 8 idVendor 0x9710 MosChip Semiconductor idProduct 0x7720 bcdDevice 1.00 iManufacturer 0 iProduct 0 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 53 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 5 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 255 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 255 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x85 EP 5 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x06 EP 6 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 255 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x87 EP 7 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 1 Device Status: 0x0002 (Bus Powered) Remote Wakeup Enabled ** Affects: linux-source-2.6.20 (Ubuntu) Importance: Undecided Status: Unconfirmed -- mos7720.ko oops on open https://bugs.launchpad.net/bugs/108490 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs 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