Hi,
We have been running ietd for months successfully and today encountered
a kernel bug that appears to have taken one of the target ids offline. I
find the following info in the kernel log (see below). The client
machine is a windows 2003 server with microsoft iscsi initiator. The
ietd is version 0.4.12 (no patches applied). The kernel is
2.6.13-1.1532_FC4smp. I have seen one other post earlier like this from
someone else, however did not find any followup. I am still
investigating what changed perhaps at the client side (that client has
been also using the iscsi-target server since it was built, so it is not
a new client).
Feb 14 04:30:49 iscsi-target1 kernel: check_cmd_sn(520) sequence error
(d33e,1c4d5a)
Feb 14 04:30:49 iscsi-target1 kernel: cmnd_rx_start(1600) 1 1fa382d -4
Feb 14 04:30:49 iscsi-target1 kernel: cmnd_skip_pdu(437) 1fa382d 1 28 0
Feb 14 04:30:49 iscsi-target1 kernel: iscsi_cmnd_remove(407) cmnd
ed473290 still on some list?, 1d, 28, c1, 2d38fa01, 200, d33e, 0 0 1
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bc7c4f>]
iscsi_cmnd_remove+0xdd/0x1c7 [iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bc9bf0>]
cmnd_release+0xd1/0x20f [iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bc9b15>] set_cork+0x3a/0x44
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bcb34f>] send+0x1a4/0x26f
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bca547>]
is_data_available+0x27/0x37 [iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bcb44d>] process_io+0x33/0x61
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bcb6da>] istd+0x8e/0xf3
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bcb64c>] istd+0x0/0xf3
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<c01343d9>] kthread+0x93/0x97
Feb 14 04:30:49 iscsi-target1 kernel: [<c0134346>] kthread+0x0/0x97
Feb 14 04:30:49 iscsi-target1 kernel: [<c0101ca1>]
kernel_thread_helper+0x5/0xb
Feb 14 04:30:49 iscsi-target1 kernel: ------------[ cut here
]------------
Feb 14 04:30:49 iscsi-target1 kernel: kernel BUG at
/usr/src/iscsitarget-0.4.12/kernel/iscsi.c:414!
Feb 14 04:30:49 iscsi-target1 kernel: invalid operand: 0000 [#1]
Feb 14 04:30:49 iscsi-target1 kernel: SMP
Feb 14 04:30:49 iscsi-target1 kernel: Modules linked in: iscsi_trgt(U)
crc32c libcrc32c ipt_REJECT ipt_state ip_conntrack iptable_filter
ip_tables parport_pc lp parport ipv6 autofs4 rfcomm
l2cap bluetooth sunrpc video button battery ac ohci_hcd i2c_piix4
i2c_core shpchp tg3 floppy dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod
aacraid aic7xxx scsi_transport_spi sd_mod scsi_mod
Feb 14 04:30:49 iscsi-target1 kernel: CPU: 1
Feb 14 04:30:49 iscsi-target1 kernel: EIP: 0060:[<f8bc7c4f>] Not
tainted VLI
Feb 14 04:30:49 iscsi-target1 kernel: EFLAGS: 00010282
(2.6.13-1.1532_FC4smp)
Feb 14 04:30:49 iscsi-target1 kernel: EIP is at
iscsi_cmnd_remove+0xdd/0x1c7 [iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: eax: cd7b9ffd ebx: ed4732b0
ecx: f8bd7304 edx: 00000000
Feb 14 04:30:49 iscsi-target1 kernel: esi: ed473290 edi: e49f2800
ebp: 00000000 esp: cd7b9f08
Feb 14 04:30:49 iscsi-target1 snmpd[12408]: Connection from UDP:
[172.17.0.8]:47384
Feb 14 04:30:49 iscsi-target1 kernel: ds: 007b es: 007b ss: 0068
Feb 14 04:30:49 iscsi-target1 snmpd[12408]: Received SNMP packet(s) from
UDP: [172.17.0.8]:47384
Feb 14 04:30:49 iscsi-target1 kernel: Process istd7 (pid: 30238,
threadinfo=cd7b9000 task=da1f2aa0)
Feb 14 04:30:49 iscsi-target1 snmpd[12408]: Connection from UDP:
[172.17.0.8]:47384
Feb 14 04:30:49 iscsi-target1 kernel: Stack: f8bd1910 f8bd6c43 00000197
ed473290 0000001d 00000028 000000c1 2d38fa01
Feb 14 04:30:49 iscsi-target1 kernel: 00000200 0000d33e 00000000
00000000 00000001 e49f2800 ed473290 ed4732ec
Feb 14 04:30:49 iscsi-target1 kernel: f8bc9bf0 00000004 cd7b9000
c039f100 f8bc9b15 00000000 00000000 e49f2800
Feb 14 04:30:49 iscsi-target1 kernel: Call Trace:
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bc9bf0>]
cmnd_release+0xd1/0x20f [iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bc9b15>] set_cork+0x3a/0x44
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bcb34f>] send+0x1a4/0x26f
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bca547>]
is_data_available+0x27/0x37 [iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bcb44d>] process_io+0x33/0x61
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bcb6da>] istd+0x8e/0xf3
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<f8bcb64c>] istd+0x0/0xf3
[iscsi_trgt]
Feb 14 04:30:49 iscsi-target1 kernel: [<c01343d9>] kthread+0x93/0x97
Feb 14 04:30:49 iscsi-target1 kernel: [<c0134346>] kthread+0x0/0x97
Feb 14 04:30:49 iscsi-target1 kernel: [<c0101ca1>]
kernel_thread_helper+0x5/0xb
Feb 14 04:30:49 iscsi-target1 kernel: Code: 51 20 89 54 24 10 89 44 24
0c c7 44 24 08 9b 01 00 00 c7 44 24 04 43 6c bd f8 c7 04 24 f8 0d bd f8
e8 fd 99 55 c7 e8 50 cc 53 c7 <0f> 0b 9e 01 ac
18 bd f8 8b 16 8b 46 04 3b 30 0f 85 a3 00 00 00
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