Shi, Harris <Harris.Shi@xxxxxxx> wrote: > Information from /var/log/messages: > =================================== > Dec 17 15:58:14 timon kernel: sd 6:0:0:2: [sdd] Sense Key : Recovered Error [current] > Dec 17 15:58:14 timon kernel: sd 6:0:0:2: [sdd] <<vendor>> ASC=0x95 ASCQ=0x1ASC=0x95 ASCQ=0x1 > Dec 17 15:58:25 timon kernel: connection2:0: ping timeout of 15 secs expired, last rx 19237, last ping 20487, now 24237 > Dec 17 15:58:25 timon kernel: connection2:0: detected conn error (1011) > Dec 17 15:58:26 timon iscsid: Kernel reported iSCSI connection 2:0 error (1011) state (3) > > > > Information from Serial output: > =============================== > Oops: 0002 [#1] SMP > last sysfs file: /sys/devices/system/cpu/cpu3/cache/index1/shared_cpu_map > Modules linked in: radeon drm agpgart crc32c libcrc32c ib_iser rdma_cm ib_cm nfs iw_cm lockd ib_sa ib_mad nfs_acl ib_core i6 > IP: [<c011a274>] __ticket_spin_lock+0x8/0x19 > *pdpt = 00000000319fe001 *pde = 0000000000000000 > BUG: unable to handle kernel NULL pointer dereference at 00000086 > IP: [<c011a274>] __ticket_spin_lock+0x8/0x19 > *pdpt = 0000000000546001 *pde = 0000000000000000 > ipv6 af_packet microcode fuse loop dm_mod mptctl e1000 iTCO_wdt sr_mod video iTCO_vendor_support e752x_edac output shpchp ] > > Pid: 0, comm: swapper Not tainted (2.6.28-rc8-test-1-pae #1) PowerEdge 2850 > EIP: 0060:[<c011a274>] EFLAGS: 00010086 CPU: 3 > EIP is at __ticket_spin_lock+0x8/0x19 > EAX: 00000086 EBX: f10f6380 ECX: f20b5400 EDX: 00000100 > ESI: f18223b0 EDI: 00000000 EBP: f38a5e78 ESP: f38a5e78 > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 > Process swapper (pid: 0, ti=f38a4000 task=f38a2fd0 task.ti=f38a4000) > Stack: > f38a5e80 c0328e0f f38a5e98 f9298389 00000002 f10f6380 f18223b0 00000000 > f38a5ea4 f7e13396 f11b9300 f38a5eb0 c0212539 f11b9300 f38a5ed4 c02125f2 > f18225b8 00000282 f389c000 f18224f4 00000100 f389c000 c0212573 f38a5f08 > Call Trace: > [<c0328e0f>] ? _spin_lock+0x15/0x18 > [<f9298389>] ? iscsi_eh_cmd_timed_out+0x24/0xb0 [libiscsi] > [<f7e13396>] ? scsi_times_out+0x35/0x61 [scsi_mod] > [<c0212539>] ? blk_rq_timed_out+0xc/0x46 I could not match my listing exactly with this output, but it appears that the session is NULL when we call into iscsi_eh_cmd_timed_out. An addr2line would help verify the iscsi_eh_cmd_timed_out line. I added Mike C to the email cc for possible comments on the error messages displayed above and if that would lead to cleanup of structures referenced in iscsi_eh_cmd_timed_out. Question on the system setup. Are you using mpp in this kernel as I did not see it in the module list? -andmike -- Michael Anderson andmike@xxxxxxxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
