The effect described below was observed in the kernel 3.2.1 After connection of the USB device implementing the USB mass storage class, I got the following warning in my /var/log/messages: Jan 20 11:36:02 WZLap kernel: [ 1393.751330] usb 4-1.3.3: new full-speed USB device number 10 using ehci_hcd Jan 20 11:36:02 WZLap kernel: [ 1393.844330] usb 4-1.3.3: New USB device found,idVendor=03eb, idProduct=2045 Jan 20 11:36:02 WZLap kernel: [ 1393.844336] usb 4-1.3.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Jan 20 11:36:02 WZLap kernel: [ 1393.844339] usb 4-1.3.3: Product: LUFA Mass Storage Demo Jan 20 11:36:02 WZLap kernel: [ 1393.844341] usb 4-1.3.3: Manufacturer: Dean Camera Jan 20 11:36:02 WZLap kernel: [ 1393.845006] scsi10 : usb-storage 4-1.3.3:1.0 Jan 20 11:36:02 WZLap mtp-probe: checking bus 4, device 10: "/sys/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.3/4-1.3.3" Jan 20 11:36:02 WZLap mtp-probe: bus: 4, device: 10 was not an MTP device Jan 20 11:36:03 WZLap kernel: [ 1394.842465] scsi 10:0:0:0: Direct-Access LUFA Dataflash Disk 0.00 PQ: 0 ANSI: 0 Jan 20 11:36:03 WZLap kernel: [ 1394.844515] sd 10:0:0:0: [sdb] 3911680 512-byte logical blocks: (2.00 GB/1.86 GiB) Jan 20 11:36:03 WZLap kernel: [ 1394.886248] sd 10:0:0:0: [sdb] Write Protect is off Jan 20 11:36:03 WZLap kernel: [ 1395.036332] sdb: sdb1 sdb2 Jan 20 11:36:03 WZLap kernel: [ 1395.113963] sd 10:0:0:0: [sdb] Attached SCSI removable disk Jan 20 11:36:12 WZLap kernel: [ 1404.558396] ------------[ cut here ]------------ Jan 20 11:36:12 WZLap kernel: [ 1404.558403] WARNING: at block/genhd.c:1568 disk_clear_events+0xb7/0xe4() Jan 20 11:36:12 WZLap kernel: [ 1404.558405] Hardware name: Dell System Vostro 3750 Jan 20 11:36:12 WZLap kernel: [ 1404.558406] Modules linked in: nls_utf8 nls_cp437 vfat fat hidp hid tun ipx acpi_cpufreq mperf cpufreq_conservative cpufreq_userspace cpufreq_stats cpufreq_powersave p8023 parport_pc ppdev lp parport rfcomm bnep binfmt_misc uinput fuse nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_tcpudp xt_owner iptable_filter ip_tables x_tables loop sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt kvm_intel kvm snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_midi arc4 snd_rawmidi snd_seq_midi_event uvcvideo videodev media snd_seq btusb v4l2_compat_ioctl32 nouveau i915 ttm snd_timer snd_seq_device iwlwifi drm_kms_helper drm mac80211 bluetooth snd cfg80211 i2c_i801 i2c_algo_bit soundcore ftdi_sio mxm_wmi i2c_core usbserial psmouse pcspkr evdev dell_wmi serio_raw sparse_keymap intel_agp dell_laptop dcdbas intel_gtt agpgart wmi snd_page_alloc iTCO_ Jan 20 11:36:12 WZLap kernel: wdt iTCO_vendor_support processor battery video rfkill ac button power_supply ext4 mbcache jbd2 crc16 dm_mod ums_realtek usb_storage uas sr_mod sd_mod cdrom crc_t10dif ahci libahci libata scsi_mod r8169 mii thermal xhci_hcd thermal_sys ehci_hcd usbcore usb_common [last unloaded: scsi_wait_scan] Jan 20 11:36:12 WZLap kernel: [ 1404.558480] Pid: 3848, comm: blkid Not tainted 3.2.1 #2 Jan 20 11:36:12 WZLap kernel: [ 1404.558482] Call Trace: Jan 20 11:36:12 WZLap kernel: [ 1404.558487] [<ffffffff810455e7>] ? warn_slowpath_common+0x78/0x8c Jan 20 11:36:12 WZLap kernel: [ 1404.558489] [<ffffffff81195613>] ? disk_clear_events+0xb7/0xe4 Jan 20 11:36:12 WZLap kernel: [ 1404.558495] [<ffffffff8111d61b>] ? check_disk_change+0x22/0x50 Jan 20 11:36:12 WZLap kernel: [ 1404.558502] [<ffffffffa00eb547>] ? sd_open+0xe7/0x193 [sd_mod] Jan 20 11:36:12 WZLap kernel: [ 1404.558505] [<ffffffff8111e57e>] ? __blkdev_get+0x270/0x37e Jan 20 11:36:12 WZLap kernel: [ 1404.558509] [<ffffffff8111e92f>] ? blkdev_get+0x2a3/0x2a3 Jan 20 11:36:12 WZLap kernel: [ 1404.558511] [<ffffffff8111e851>] ? blkdev_get+0x1c5/0x2a3 Jan 20 11:36:12 WZLap kernel: [ 1404.558513] [<ffffffff8111e92f>] ? blkdev_get+0x2a3/0x2a3 Jan 20 11:36:12 WZLap kernel: [ 1404.558517] [<ffffffff810f4f51>] ? __dentry_open+0x19c/0x2b3 Jan 20 11:36:12 WZLap kernel: [ 1404.558520] [<ffffffff810fe2c0>] ? dget+0x12/0x1d Jan 20 11:36:12 WZLap kernel: [ 1404.558523] [<ffffffff8110178a>] ? do_last+0x552/0x58c Jan 20 11:36:12 WZLap kernel: [ 1404.558526] [<ffffffff811018b9>] ? path_openat+0xce/0x31c Jan 20 11:36:12 WZLap kernel: [ 1404.558529] [<ffffffff81101b6f>] ? user_path_at_empty+0x53/0x7b Jan 20 11:36:12 WZLap kernel: [ 1404.558534] [<ffffffff810b62ef>] ? get_pageblock_flags_group+0x3a/0x6e Jan 20 11:36:12 WZLap kernel: [ 1404.558538] [<ffffffff81101bc9>] ? do_filp_open+0x2a/0x6e Jan 20 11:36:12 WZLap kernel: [ 1404.558542] [<ffffffff81329632>] ? _cond_resched+0x7/0x1c Jan 20 11:36:12 WZLap kernel: [ 1404.558546] [<ffffffff811a9139>] ? __strncpy_from_user+0x18/0x48 Jan 20 11:36:12 WZLap kernel: [ 1404.558550] [<ffffffff8110a7c7>] ? alloc_fd+0x64/0x108 Jan 20 11:36:12 WZLap kernel: [ 1404.558554] [<ffffffff810f5e0f>] ? do_sys_open+0x5e/0xe5 Jan 20 11:36:12 WZLap kernel: [ 1404.558558] [<ffffffff8132f8d2>] ? system_call_fastpath+0x16/0x1b Jan 20 11:36:12 WZLap kernel: [ 1404.558561] ---[ end trace 28871ac7ad8a2a73 ]--- Jan 20 11:36:37 WZLap kernel: [ 1429.431472] FAT-fs (sdb1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive! -- Best Regards, Wojciech Zabołotny -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
