when trying to access /dev/ttyUSB0, which is a port on a dual port usb-serial cable (mos7720 based) an kernel OOPS happens the driver loads ok, first access via minicom -> OOPS (config.gz attached)
Mar 6 11:21:49 emerald Unable to handle kernel paging request at ffff81093d0e3668 RIP: Mar 6 11:21:49 emerald [<ffffffff88164431>] :usbserial:serial_open+0x91/0x190 Mar 6 11:21:49 emerald PGD 8063 PUD 0 Mar 6 11:21:49 emerald Oops: 0000 [1] SMP Mar 6 11:21:49 emerald CPU 0 Mar 6 11:21:49 emerald Modules linked in: snd_rtctimer snd_seq_midi snd_emu10k1_synth snd_emux_synth snd_seq_virmidi snd_seq_midi_emul snd_pcm_oss snd_mixer_oss snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq nls_iso8859_15 vmnet(PF) vmmon(PF) rfcomm l2cap it87 hwmon_vid i2c_isa eeprom lm90 fuse nls_iso8859_1 nls_cp850 kqemu capability dazuko commoncap eth1394 tuner psmouse tvaudio msp3400 nvidia(P) k8temp mos7720 usbserial skge snd_bt87x forcedeth snd_emu10k1 snd_rawmidi snd_seq_device snd_util_mem snd_hwdep bttv video_buf ir_common compat_ioctl32 btcx_risc tveeprom videodev v4l2_common v4l1_compat ohci1394 hci_usb bluetooth zaurus cdc_ether usbnet snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_timer snd snd_page_alloc i2c_nforce2 Mar 6 11:21:49 emerald Pid: 11948, comm: minicom Tainted: PF 2.6.21-rc2-emi #1 Mar 6 11:21:49 emerald RIP: 0010:[<ffffffff88164431>] [<ffffffff88164431>] :usbserial:serial_open+0x91/0x190 Mar 6 11:21:49 emerald RSP: 0018:ffff8100bbe3bda8 EFLAGS: 00010293 Mar 6 11:21:49 emerald RAX: 00000000ffffff01 RBX: 000000000bc00000 RCX: ffff8100bd72a248 Mar 6 11:21:49 emerald RDX: 00000000000000ff RSI: ffff81010b780b80 RDI: ffff81013d0e3ea0 Mar 6 11:21:49 emerald RBP: ffff81013d0e3e40 R08: 0000000000000000 R09: ffff8100bd72a2a8 Mar 6 11:21:49 emerald R10: 000000000000028f R11: 0000000000000002 R12: ffff8100bd72a000 Mar 6 11:21:49 emerald R13: 0000000000000000 R14: 00000000ffffffed R15: ffff81010b780b80 Mar 6 11:21:49 emerald FS: 00002b80ce8e5da0(0000) GS:ffffffff808a200 (0000) knlGS:00000000f65519c0 Mar 6 11:21:49 emerald CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Mar 6 11:21:49 emerald CR2: ffff81093d0e3668 CR3: 00000000bd7c2000 CR4: 00000000000006e0 Mar 6 11:21:49 emerald Process minicom (pid: 11948, threadinfo ffff8100bbe3a000, task ffff810109d727f0) Mar 6 11:21:49 emerald Stack: ffff81010a583f80 000000000bc00000 ffff81010b780b80 0000000000000000 Mar 6 11:21:49 emerald 0000000000000100 0000000000008902 ffff81013fc2d680 ffffffff805253a6 Mar 6 11:21:49 emerald ffff8100bd72a000 000000000b780b80 0000000000000000 ffff81013df58c08 Mar 6 11:21:49 emerald Call Trace: Mar 6 11:21:49 emerald [<ffffffff805253a6>] tty_open+0x1b6/0x360 Mar 6 11:21:49 emerald [<ffffffff8024afe2>] chrdev_open+0x182/0x1e0 Mar 6 11:21:49 emerald [<ffffffff8024ae60>] chrdev_open+0x0/0x1e0 Mar 6 11:21:49 emerald [<ffffffff8021eccd>] __dentry_open+0xed/0x1e0 Mar 6 11:21:49 emerald [<ffffffff8022855d>] do_filp_open+0x2d/0x40 Mar 6 11:21:49 emerald [<ffffffff80234c6f>] do_setitimer+0x16f/0x350 Mar 6 11:21:49 emerald [<ffffffff802199ca>] do_sys_open+0x5a/0x100 Mar 6 11:21:49 emerald [<ffffffff802601ce>] system_call+0x7e/0x83 Mar 6 11:21:49 emerald Mar 6 11:21:49 emerald Mar 6 11:21:49 emerald Code: 48 8b 5c c5 20 48 85 db 0f 84 c2 00 00 00 4c 8d 6b 18 66 41 Mar 6 11:21:49 emerald RIP [<ffffffff88164431>] :usbserial:serial_open+0x91/0x190 Mar 6 11:21:49 emerald RSP <ffff8100bbe3bda8> Mar 6 11:21:49 emerald CR2: ffff81093d0e3668
config.gz
Description: GNU Zip compressed data
