Hello
1. Once, when there were some problems with the target I had the
following oops:
========================================================================
11:0:0:0: scsi: Device offlined - not ready after error recovery
BUG: unable to handle kernel NULL pointer dereference at virtual address
00000000
printing eip:
c0241964
*pde = 00000000
Oops: 0000 [#1]
PREEMPT SMP
Modules linked in: qla2xxx firmware_class scsi_transport_fc pcspkr
w83627hf hwmon_vid eeprom adm1021 i2c_isa binfmt_misc dm_mirror dm_mod
video button battery ac ehci_hcd sg uhci_hcd e1000 i2c_i801 e7xxx_edac
i2c_core usbcore
CPU: 0
EIP: 0060:[<c0241964>] Not tainted VLI
EFLAGS: 00010202 (2.6.17.2 #7)
EIP is at make_class_name+0x28/0x8d
eax: 00000000 ebx: ffffffff ecx: ffffffff edx: cc5331f0
esi: 0000000b edi: 00000000 ebp: 00000000 esp: cadfce8c
ds: 007b es: 007b ss: 0068
Process fc_wq_11 (pid: 10579, threadinfo=cadfc000 task=f7928030)
Stack: cc5331f0 c03cb7c4 cc5331f0 c03cb7c4 c03cb7cc c0241b82 c03cb740
00000000
e6cd203c cc5331f0 cc533098 f73e3800 00000202 c0241c60 cc533000
c025b994
cc533000 e6cd2038 c025b9e5 cc533000 e6cd2000 c025ba79 f73e3814
dd8d1044
Call Trace:
<c0241b82> class_device_del+0x93/0x169 <c0241c60>
class_device_unregister+0x8/0x10
<c025b994> __scsi_remove_device+0x26/0x60 <c025b9e5>
scsi_remove_device+0x17/0x20
<c025ba79> __scsi_remove_target+0x8b/0xb7 <c025badc>
__remove_child+0x0/0x18
<c025baf0> __remove_child+0x14/0x18 <c023fb18>
device_for_each_child+0x23/0x41
<c025bad3> scsi_remove_target+0x2e/0x37 <f88edb5f>
fc_rport_final_delete+0x32/0x6a [scsi_transport_fc]
<c012a4ae> run_workqueue+0x72/0xe6 <f88edb2d>
fc_rport_final_delete+0x0/0x6a [scsi_transport_fc]
<c012abd1> worker_thread+0x13b/0x15a <c01156fe>
default_wake_function+0x0/0xc
<c012aa96> worker_thread+0x0/0x15a <c012d36c> kthread+0x9f/0xc4
<c012d2cd> kthread+0x0/0xc4 <c0100d35> kernel_thread_helper+0x5/0xb
Code: 89 c8 c3 55 57 56 53 83 ec 04 89 04 24 89 c2 8b 40 4c 8b 38 31 ed
bb ff ff ff ff 89 d9 89 e8 f2 ae f7 d1 49 89 ce 8b 7a 08 89 d9 <f2> ae
f7 d1 49 89 ca 8d 4e 02 8d 04 0a ba d0 00 00 00 e8 59 4b
EIP: [<c0241964>] make_class_name+0x28/0x8d SS:ESP 0068:cadfce8c
========================================================================
2. If "rmmod" is called too soon after "modprobe" sometimes the
following messages appear in the kernel log (I made them one func name
per line for readability).
========================================================================
ERROR: FC host 'qla2xxx' attempted to flush work, when no workqueue created.
<f88edfdb> fc_remote_port_add+0x31/0x37c [scsi_transport_fc]
<f89e2ea3> qla2x00_reg_remote_port+0x1d4/0x28a [qla2xxx]
<f89e1ae0> qla2x00_do_dpc+0x32a/0x33f [qla2xxx]
<f89e17b6> qla2x00_do_dpc+0x0/0x33f [qla2xxx]
<c012d36c> kthread+0x9f/0xc4
<c012d2cd> kthread+0x0/0xc4
<c0100d35> kernel_thread_helper+0x5/0xb
ERROR: FC host 'qla2xxx' attempted to flush work, when no workqueue created.
<f88edd22> fc_remote_port_rolechg+0x96/0xf6 [scsi_transport_fc]
<f89e2ef5> qla2x00_reg_remote_port+0x226/0x28a [qla2xxx]
<f89e1ae0> qla2x00_do_dpc+0x32a/0x33f [qla2xxx]
<f89e17b6> qla2x00_do_dpc+0x0/0x33f [qla2xxx]
<c012d36c> kthread+0x9f/0xc4
<c012d2cd> kthread+0x0/0xc4
<c0100d35> kernel_thread_helper+0x5/0xb
========================================================================
Kernel is 2.6.17.2.
Vlad
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