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    SubjectErrors with USB Disk
    Hi,

    I'm trying to use an USB Disk (IDE Disk in external USB Case), but
    strange file system errors occurend and tools as dosfsck reproducably
    hang.

    kingfisher:/home/schabi# uname -a
    Linux kingfisher 2.6.0 #1 Wed Dec 24 19:16:00 CET 2003 i686 GNU/Linux

    kingfisher:/home/schabi# cat /proc/version
    Linux version 2.6.0 (root@kingfisher) (gcc-Version 3.3.2 (Debian)) #1
    Wed Dec 24 19:16:00 CET 2003

    I attached a kernel log excerpt, it seems as there's a bug in the slab
    allocater.

    As I used 2.6.0, was there some work up to now (2.6.2rc2) in this area
    so I should test using this newer kernel again?

    I'm willing to do some debug work and run tests if you tell me what to
    do, but I have very limited kernel developer knowledge.

    Thanks,
    Markus
    --
    markus schaber | dipl. informatiker
    logi-track ag | rennweg 14-16 | ch 8001 zürich
    phone +41-43-888 62 52 | fax +41-43-888 62 53
    mailto:schaber@logi-track.com | www.logi-track.com
    kingfisher:/home/schabi# tail -f /var/log/messages
    Jan 21 00:26:48 kingfisher kernel: SCSI error : <0 0 0 0> return code = 0x70000
    Jan 21 00:26:48 kingfisher kernel: end_request: I/O error, dev sda, sector 431
    Jan 21 00:27:38 kingfisher kernel: usb 1-5: USB disconnect, address 2
    Jan 21 00:27:38 kingfisher kernel: hub 1-0:1.0: new USB device on port 5, assigned address 3
    Jan 21 00:27:38 kingfisher kernel: scsi1 : SCSI emulation for USB Mass Storage devices
    Jan 21 00:27:38 kingfisher kernel: Vendor: ST312002 Model: 6A Rev: 0811
    Jan 21 00:27:38 kingfisher kernel: Type: Direct-Access ANSI SCSI revision: 02
    Jan 21 00:27:38 kingfisher kernel: SCSI device sda: 234441648 512-byte hdwr sectors (120034 MB)
    Jan 21 00:27:38 kingfisher kernel: sda: sda1
    Jan 21 00:27:38 kingfisher kernel: Attached scsi disk sda at scsi1, channel 0, id 0, lun 0
    Jan 21 00:30:43 kingfisher kernel: eth0: Media Link Off
    Jan 21 00:31:23 kingfisher kernel: usb 1-5: USB disconnect, address 3
    Jan 21 00:31:27 kingfisher kernel: scsi: Device offlined - not ready after error recovery: host 1 channel 0 id 0 lun 0
    Jan 21 00:31:27 kingfisher kernel: SCSI error : <1 0 0 0> return code = 0x6040000
    Jan 21 00:31:27 kingfisher kernel: end_request: I/O error, dev sda, sector 191
    Jan 21 00:31:27 kingfisher kernel: Call Trace:
    Jan 21 00:31:27 kingfisher kernel: [kmem_cache_destroy+133/243] kmem_cache_destroy+0x85/0xf3
    Jan 21 00:31:27 kingfisher kernel: [scsi_destroy_command_freelist+89/135] scsi_destroy_command_freelist+0x59/0x87
    Jan 21 00:31:27 kingfisher kernel: [scsi_host_dev_release+50/138] scsi_host_dev_release+0x32/0x8a
    Jan 21 00:31:27 kingfisher kernel: [device_release+32/120] device_release+0x20/0x78
    Jan 21 00:31:27 kingfisher kernel: [scsi_block_when_processing_errors+126/128] scsi_block_when_processing_errors+0x7e/0x80
    Jan 21 00:31:27 kingfisher kernel: [kobject_cleanup+152/154] kobject_cleanup+0x98/0x9a
    Jan 21 00:31:27 kingfisher kernel: [acqseq_lock.5+608519974/1068914328] scsi_disk_put+0x19/0x29 [sd_mod]
    Jan 21 00:31:27 kingfisher kernel: [acqseq_lock.5+608520941/1068914328] sd_open+0xfc/0x103 [sd_mod]
    Jan 21 00:31:27 kingfisher kernel: [acqseq_lock.5+608520689/1068914328] sd_open+0x0/0x103 [sd_mod]
    Jan 21 00:31:27 kingfisher kernel: [do_open+947/1048] do_open+0x3b3/0x418
    Jan 21 00:31:27 kingfisher kernel: [bdev_test+0/20] bdev_test+0x0/0x14
    Jan 21 00:31:27 kingfisher kernel: [bdev_set+0/16] bdev_set+0x0/0x10
    Jan 21 00:31:27 kingfisher kernel: [blkdev_open+60/128] blkdev_open+0x3c/0x80
    Jan 21 00:31:27 kingfisher kernel: [dentry_open+317/510] dentry_open+0x13d/0x1fe
    Jan 21 00:31:27 kingfisher kernel: [filp_open+98/100] filp_open+0x62/0x64
    Jan 21 00:31:27 kingfisher kernel: [sys_open+91/139] sys_open+0x5b/0x8b
    Jan 21 00:31:27 kingfisher kernel: [syscall_call+7/11] syscall_call+0x7/0xb
    Jan 21 00:31:27 kingfisher kernel:
    Jan 21 00:31:29 kingfisher kernel: hub 1-0:1.0: new USB device on port 5, assigned address 4
    Jan 21 00:31:29 kingfisher kernel: kmem_cache_create: duplicate cache scsi_cmd_cache
    Jan 21 00:31:29 kingfisher kernel: ------------[ cut here ]------------
    Jan 21 00:31:29 kingfisher kernel: kernel BUG at mm/slab.c:1268!
    Jan 21 00:31:29 kingfisher kernel: invalid operand: 0000 [#1]
    Jan 21 00:31:29 kingfisher kernel: CPU: 0
    Jan 21 00:31:29 kingfisher kernel: EIP: 0060:[kmem_cache_create+940/1180] Tainted: P
    Jan 21 00:31:29 kingfisher kernel: EFLAGS: 00010202
    Jan 21 00:31:29 kingfisher kernel: EIP is at kmem_cache_create+0x3ac/0x49c
    Jan 21 00:31:29 kingfisher kernel: eax: 00000032 ebx: dfddd750 ecx: c04812f8 edx: c03ca6f8
    Jan 21 00:31:29 kingfisher kernel: esi: c038fc8f edi: c038fc8f ebp: dfcafb6c esp: dfdcdd54
    Jan 21 00:31:29 kingfisher kernel: ds: 007b es: 007b ss: 0068
    Jan 21 00:31:29 kingfisher kernel: Process khubd (pid: 5, threadinfo=dfdcc000 task=dff8e080)
    Jan 21 00:31:29 kingfisher kernel: Stack: c037bc00 c038fc80 00002000 dfdcdd70 dfcafba8 ffffffff ffffff80 00000080
    Jan 21 00:31:29 kingfisher kernel: c9403400 c0404a00 c940340c c0404a28 c026949a c038fc80 00000180 00000080
    Jan 21 00:31:29 kingfisher kernel: 00002000 00000000 00000000 000001c4 c9403400 c94035c4 c0408400 c026a453
    Jan 21 00:31:29 kingfisher kernel: Call Trace:
    Jan 21 00:31:29 kingfisher kernel: [scsi_setup_command_freelist+116/252] scsi_setup_command_freelist+0x74/0xfc
    Jan 21 00:31:29 kingfisher kernel: [scsi_host_alloc+403/660] scsi_host_alloc+0x193/0x294
    Jan 21 00:31:29 kingfisher kernel: [default_wake_function+0/18] default_wake_function+0x0/0x12
    Jan 21 00:31:29 kingfisher kernel: [usb_stor_acquire_resources+172/263] usb_stor_acquire_resources+0xac/0x107
    Jan 21 00:31:29 kingfisher kernel: [storage_probe+265/451] storage_probe+0x109/0x1c3
    Jan 21 00:31:29 kingfisher kernel: [dput+34/530] dput+0x22/0x212
    Jan 21 00:31:29 kingfisher kernel: [usb_probe_interface+115/147] usb_probe_interface+0x73/0x93
    Jan 21 00:31:29 kingfisher kernel: [bus_match+63/106] bus_match+0x3f/0x6a
    Jan 21 00:31:29 kingfisher kernel: [device_attach+65/145] device_attach+0x41/0x91
    Jan 21 00:31:29 kingfisher kernel: [bus_add_device+91/159] bus_add_device+0x5b/0x9f
    Jan 21 00:31:29 kingfisher kernel: [device_add+161/288] device_add+0xa1/0x120
    Jan 21 00:31:29 kingfisher kernel: [usb_set_configuration+463/569] usb_set_configuration+0x1cf/0x239
    Jan 21 00:31:29 kingfisher kernel: [usb_new_device+589/1024] usb_new_device+0x24d/0x400
    Jan 21 00:31:29 kingfisher kernel: [hub_port_connect_change+442/788] hub_port_connect_change+0x1ba/0x314
    Jan 21 00:31:29 kingfisher kernel: [hub_events+723/838] hub_events+0x2d3/0x346
    Jan 21 00:31:29 kingfisher kernel: [hub_thread+45/228] hub_thread+0x2d/0xe4
    Jan 21 00:31:29 kingfisher kernel: [ret_from_fork+6/20] ret_from_fork+0x6/0x14
    Jan 21 00:31:29 kingfisher kernel: [default_wake_function+0/18] default_wake_function+0x0/0x12
    Jan 21 00:31:29 kingfisher kernel: [hub_thread+0/228] hub_thread+0x0/0xe4
    Jan 21 00:31:29 kingfisher kernel: [kernel_thread_helper+5/11] kernel_thread_helper+0x5/0xb
    Jan 21 00:31:29 kingfisher kernel:
    Jan 21 00:31:29 kingfisher kernel: Code: 0f 0b f4 04 f2 b3 37 c0 8b 0b e9 76 ff ff ff 8b 47 34 c7 04


    kingfisher:/home/schabi# uname -a
    Linux kingfisher 2.6.0 #1 Wed Dec 24 19:16:00 CET 2003 i686 GNU/Linux

    kingfisher:/home/schabi# cat /proc/version
    Linux version 2.6.0 (root@kingfisher) (gcc-Version 3.3.2 (Debian)) #1 Wed Dec 24 19:16:00 CET 2003

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