When connecting DELL TL2000 tape library (with SAS cable and serial attached SCSI controller Adaptec ASC-1405 Unified Serial HBA), the system (kernel 2.6.32-279.1.1.el6.x86_64) hang up.<br />
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Jul 11 19:23:25 backup92a kernel: BUG: soft lockup - CPU#1 stuck for 67s! [scsi_eh_8:334]<br />
Jul 11 19:23:25 backup92a kernel: Modules linked in: ch osst st autofs4 bnx2fc fcoe 8021q libfcoe garp stp libfc llc scsi_transport_fc scsi_tgt sunrpc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables i2c_i801 i2c_core sg iTCO_wdt iTCO_vendor_support i5000_edac edac_core i5k_amb ioatdma dca shpchp ext4 mbcache jbd2 sd_mod crc_t10dif e1000e megaraid_sas sr_mod cdrom mvsas libsas scsi_transport_sas ahci pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod be2iscsi bnx2i cnic uio ipv6 cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio libiscsi_tcp qla4xxx iscsi_boot_sysfs libiscsi scsi_transport_iscsi [last unloaded: scsi_wait_scan]<br />
Jul 11 19:23:25 backup92a kernel: CPU 1 <br />
Jul 11 19:23:25 backup92a kernel: Modules linked in: ch osst st autofs4 bnx2fc fcoe 8021q libfcoe garp stp libfc llc scsi_transport_fc scsi_tgt sunrpc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables i2c_i801 i2c_core sg iTCO_wdt iTCO_vendor_support i5000_edac edac_core i5k_amb ioatdma dca shpchp ext4 mbcache jbd2 sd_mod crc_t10dif e1000e megaraid_sas sr_mod cdrom mvsas libsas scsi_transport_sas ahci pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod be2iscsi bnx2i cnic uio ipv6 cxgb4i cxgb4 cxgb3i libcxgbi cxgb3 mdio libiscsi_tcp qla4xxx iscsi_boot_sysfs libiscsi scsi_transport_iscsi [last unloaded: scsi_wait_scan]<br />
Jul 11 19:23:25 backup92a kernel: <br />
Jul 11 19:23:25 backup92a kernel: Pid: 334, comm: scsi_eh_8 Not tainted 2.6.32-279.1.1.el6.x86_64 <a href="http://bugs.centos.org/view.php?id=1">0000001</a> NEC Express5800/120Rh-1 [N8100-1387E]/MS-9192-01S<br />
Jul 11 19:23:25 backup92a kernel: RIP: 0010:[<ffffffff81500128>] [<ffffffff81500128>] _spin_lock+0x18/0x30<br />
Jul 11 19:23:25 backup92a kernel: RSP: 0018:ffff880125f29c70 EFLAGS: 00000202<br />
Jul 11 19:23:25 backup92a kernel: RAX: 0000000000000044 RBX: ffff880125f29c70 RCX: 000000000000797c<br />
Jul 11 19:23:25 backup92a kernel: RDX: 0000000000000045 RSI: 0000000000000046 RDI: ffff880125f40008<br />
Jul 11 19:23:25 backup92a kernel: RBP: ffffffff8100bc0e R08: 00000000000101ce R09: 00000000ffffffff<br />
Jul 11 19:23:25 backup92a kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff880125f29c40<br />
Jul 11 19:23:25 backup92a kernel: R13: 0000000000000000 R14: ffff880127523a00 R15: ffff880125489000<br />
Jul 11 19:23:25 backup92a kernel: FS: 0000000000000000(0000) GS:ffff880028300000(0000) knlGS:0000000000000000<br />
Jul 11 19:23:25 backup92a kernel: CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b<br />
Jul 11 19:23:25 backup92a kernel: CR2: 00007feab404fc30 CR3: 0000000125bf4000 CR4: 00000000000006e0<br />
Jul 11 19:23:25 backup92a kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br />
Jul 11 19:23:25 backup92a kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400<br />
Jul 11 19:23:25 backup92a kernel: Process scsi_eh_8 (pid: 334, threadinfo ffff880125f28000, task ffff880125d96080)<br />
Jul 11 19:23:25 backup92a kernel: Stack:<br />
Jul 11 19:23:25 backup92a kernel: ffff880125f29ce0 ffffffffa0222f8a 0000000000000060 ffff880125534bd8<br />
Jul 11 19:23:25 backup92a kernel: <d> 0000000000000000 0000000000000001 ffff880125f514e0 0000000075792f95<br />
Jul 11 19:23:25 backup92a kernel: <d> ffff8801268971c0 0000000000000000 ffff880125534bc0 ffff880125f40000<br />
Jul 11 19:23:25 backup92a kernel: Call Trace:<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffffa0222f8a>] ? mvs_slot_complete+0x17a/0x4f0 [mvsas]<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffffa0224e44>] ? mvs_abort_task_set+0x194/0x1d0 [mvsas]<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff810096f0>] ? __switch_to+0xd0/0x320<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffffa0161a39>] ? sas_scsi_recover_host+0x389/0xdd0 [libsas]<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff8136945a>] ? scsi_error_handler+0x13a/0x6d0<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff81369320>] ? scsi_error_handler+0x0/0x6d0<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff81091d66>] ? kthread+0x96/0xa0<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff8100c14a>] ? child_rip+0xa/0x20<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff81091cd0>] ? kthread+0x0/0xa0<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff8100c140>] ? child_rip+0x0/0x20<br />
Jul 11 19:23:25 backup92a kernel: Code: 44 00 00 f0 81 2f 00 00 00 01 74 05 e8 e2 e3 d7 ff c9 c3 55 48 89 e5 0f 1f 44 00 00 b8 00 00 01 00 f0 0f c1 07 0f b7 d0 c1 e8 10 <39> c2 74 0e f3 90 0f b7 17 eb f5 83 3f 00 75 f4 eb df c9 c3 0f <br />
Jul 11 19:23:25 backup92a kernel: Call Trace:<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffffa0222f8a>] ? mvs_slot_complete+0x17a/0x4f0 [mvsas]<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffffa0224e44>] ? mvs_abort_task_set+0x194/0x1d0 [mvsas]<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff810096f0>] ? __switch_to+0xd0/0x320<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffffa0161a39>] ? sas_scsi_recover_host+0x389/0xdd0 [libsas]<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff8136945a>] ? scsi_error_handler+0x13a/0x6d0<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff81369320>] ? scsi_error_handler+0x0/0x6d0<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff81091d66>] ? kthread+0x96/0xa0<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff8100c14a>] ? child_rip+0xa/0x20<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff81091cd0>] ? kthread+0x0/0xa0<br />
Jul 11 19:23:25 backup92a kernel: [<ffffffff8100c140>] ? child_rip+0x0/0x20<br />
Jul 11 19:23:38 backup92a kernel: INFO: task scsi_id:1632 blocked for more than 120 seconds.
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