[OOPS] 2.5.70-bk15: sbp2: oops on unplug, replug

[Torrey Hoffman <thoffman@arnor.net>]

After (re)booting 2.5.70-bk15 I plugged in a 250 GB drive, mounted the
single reiserfs partition on it, copied some data to it, and ran "sync".

Without unmounting the partition, I then unplugged the firewire cable,
and a few seconds later plugged it in again.  This produced an OOPS. 
The dmesg log of the whole thing is as follows:

- - - -

SCSI device sda: 490234752 512-byte hdwr sectors (251000 MB)
sda: asking for cache data failed
sda: assuming drive cache: write through
 sda: sda1
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
found reiserfs format "3.6" with standard journal
Reiserfs journal params: device sda1, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
reiserfs: checking transaction log (sda1) for (sda1)
Using r5 hash to sort names
ieee1394: Node 01:1023 changed to 00:1023
ieee1394: Device removed: ID:BUS[00:1023]  GUID[0004830000002cb3]
ieee1394: sbp2: Logged out of SBP-2 device
ieee1394: sbp2: Logged into SBP-2 device
ieee1394: sbp2: Node[00:1023]: Max speed [S400] - Max payload [2048]
  Vendor: Maxtor 4  Model: A250J8            Rev:     
  Type:   Direct-Access                      ANSI SCSI revision: 06
SCSI device sda: 490234752 512-byte hdwr sectors (251000 MB)
sda: asking for cache data failed
sda: assuming drive cache: write through
Unable to handle kernel NULL pointer dereference at virtual address 0000004c
 printing eip:
e88caaae
*pde = 00000000
Oops: 0000 [#1]
CPU:    0
EIP:    0060:[<e88caaae>]    Not tainted
EFLAGS: 00010286
EIP is at scsi_device_get+0xe/0x40 [scsi_mod]
eax: 00000000   ebx: c1740900   ecx: 00000001   edx: e68f2b60
esi: e68f2b60   edi: e6dd54e0   ebp: e68a5a20   esp: e68a5a20
ds: 007b   es: 007b   ss: 0068
Process knodemgrd_0 (pid: 350, threadinfo=e68a4000 task=e75f00c0)
Stack: e68a5a3c e88b3319 e68f2b60 c02117a2 c1740900 e88b32f0 e88b5c60 e68a5a7c 
       c0151fba e51f9ba0 e68a5b30 e66cdf18 c0118bcc e68a5a7c 00000046 e7fedc30 
       00000001 c1740918 c0118d9a 00000000 c1740900 00000001 e68a5b30 e68a5bb8 
Call Trace:
 [<e88b3319>] sd_open+0x29/0xf0 [sd_mod]
 [<c02117a2>] get_gendisk+0x22/0x40
 [<e88b32f0>] sd_open+0x0/0xf0 [sd_mod]
 [<e88b5c60>] +0x0/0x100 [sd_mod]
 [<c0151fba>] do_open+0x2ea/0x320
 [<c0118bcc>] schedule+0x19c/0x340
 [<c0118d9a>] default_wake_function+0x2a/0x30
 [<c0152055>] blkdev_get+0x65/0x70
 [<c0175004>] register_disk+0xb4/0x150
 [<c0211731>] add_disk+0x51/0x60
 [<c02116b0>] exact_match+0x0/0x10
 [<c02116c0>] exact_lock+0x0/0x20
 [<e88b47c3>] sd_probe+0x1a3/0x260 [sd_mod]
 [<e88b5bc4>] +0x4/0x70 [sd_mod]
 [<c020baf3>] bus_match+0x43/0x80
 [<e88b5bc4>] +0x4/0x70 [sd_mod]
 [<e88b5bf4>] +0x34/0x70 [sd_mod]
 [<e88d8d1c>] scsi_bus_type+0x5c/0xe8 [scsi_mod]
 [<c020bb7f>] device_attach+0x4f/0x90
 [<e88b5bc4>] +0x4/0x70 [sd_mod]
 [<e88d8cc0>] scsi_bus_type+0x0/0xe8 [scsi_mod]
 [<c020bd33>] bus_add_device+0x63/0xb0
 [<c020ae1f>] device_add+0xcf/0x100
 [<e88d0720>] scsi_device_release+0x0/0x20 [scsi_mod]
 [<e88d8cc0>] scsi_bus_type+0x0/0xe8 [scsi_mod]
 [<e88d0824>] scsi_device_register+0xe4/0x180 [scsi_mod]
 [<e88d2758>] +0x4b8/0xc00 [scsi_mod]
 [<e88cfbae>] scsi_add_lun+0x1be/0x3a0 [scsi_mod]
 [<e88cfe36>] scsi_probe_and_add_lun+0xa6/0x120 [scsi_mod]
 [<e88cffb5>] scsi_add_device+0x35/0x50 [scsi_mod]
 [<e88a39f9>] sbp2_start_device+0x219/0x3d0 [sbp2]
 [<e88a37a3>] sbp2_start_ud+0xa3/0xe0 [sbp2]
 [<e88a3472>] sbp2_probe+0x32/0x40 [sbp2]
 [<e88a876c>] sbp2_driver+0xc/0x70 [sbp2]
 [<c020baf3>] bus_match+0x43/0x80
 [<e88a876c>] sbp2_driver+0xc/0x70 [sbp2]
 [<e88a879c>] sbp2_driver+0x3c/0x70 [sbp2]
 [<e88c885c>] ieee1394_bus_type+0x5c/0x100 [ieee1394]
 [<c020bb7f>] device_attach+0x4f/0x90
 [<e88a876c>] sbp2_driver+0xc/0x70 [sbp2]
 [<e88c8800>] ieee1394_bus_type+0x0/0x100 [ieee1394]
 [<c020bd33>] bus_add_device+0x63/0xb0
 [<c020ae1f>] device_add+0xcf/0x100
 [<e88c867c>] nodemgr_dev_template_ud+0xbc/0xc0 [ieee1394]
 [<e88be768>] nodemgr_process_unit_directory+0x188/0x490 [ieee1394]
 [<e88c1199>] +0x289/0x330 [ieee1394]
 [<e88bec52>] nodemgr_process_root_directory+0x1e2/0x1f0 [ieee1394]
 [<e88bef3e>] nodemgr_process_config_rom+0x8e/0xc0 [ieee1394]
 [<e88c873c>] nodemgr_dev_template_ne+0xbc/0xc0 [ieee1394]
 [<e88be203>] nodemgr_create_node+0x153/0x1e0 [ieee1394]
 [<e88bf376>] nodemgr_node_probe_one+0xe6/0xf0 [ieee1394]
 [<e88bf4c4>] nodemgr_node_probe+0x104/0x110 [ieee1394]
 [<e88bf7b8>] nodemgr_host_thread+0x118/0x180 [ieee1394]
 [<e88bf6a0>] nodemgr_host_thread+0x0/0x180 [ieee1394]
 [<c010912d>] kernel_thread_helper+0x5/0x18

Code: 8b 40 4c 8b 00 85 c0 74 0b 83 38 02 74 19 ff 80 a0 00 00 00 
 

-- 
Torrey Hoffman <thoffman@arnor.net>