From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 81861] New: mvsas.ko v0.8.16 error messages and kernel crashes attaching 4 SATA drives to specific HP SAS expander ports Date: Thu, 07 Aug 2014 17:33:26 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail.kernel.org ([198.145.19.201]:38742 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757264AbaHGRde convert rfc822-to-8bit (ORCPT ); Thu, 7 Aug 2014 13:33:34 -0400 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 00006201C0 for ; Thu, 7 Aug 2014 17:33:31 +0000 (UTC) Received: from bugzilla2.web.kernel.org (bugzilla2.web.kernel.org [172.20.200.52]) by mail.kernel.org (Postfix) with ESMTP id C1A7A2018E for ; Thu, 7 Aug 2014 17:33:28 +0000 (UTC) Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D81861 Bug ID: 81861 Summary: mvsas.ko v0.8.16 error messages and kernel crashes attaching 4 SATA drives to specific HP SAS expander ports Product: SCSI Drivers Version: 2.5 Kernel Version: 3.16.0-031600rc6 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: blocking Priority: P1 Component: Other Assignee: scsi_drivers-other@kernel-bugs.osdl.org Reporter: linux-ide@crashplan.pro Regression: No The issues are (1) error messages and (2) kernel crashes when attaching= 4 drives (1 SFF SAS cable) to specific ports of a SAS expander. The issue is only tested with HP SAS port expander (PMC Sierra PM8005 c= hip) running firmware 2.08. This expander has 36/4=3D9 SAS ports. 1 port of type SFF-8088, labelled 1C on the PCB. 8 port of type SFF-8087, labelled 2C till 9C on the PCB. Port =E2=80=9C1C=E2=80=9D is connected to a Supermicro SAS2LP-MV8, Marv= ell 88SE9485 based chip, lspci output is inserted below. The issue is not always identical. When attaching the 4 drives to diffe= rent port numbers on the port multiplier, this is what happens in this order= : 2C, 3C, 4C =3D ok 5C =3D error 6C, 7C, 8C =3D kernel crash 9C =3D error After that first run from port 2 till 9, the issue seems more random: 9C =3D kernel crash 4C =3D kernel crash 3C =3D error 9C =3D error 7C =3D kernel crash 3C =3D error 2C =3D ok 4C =3D kernel crash The =E2=80=9Cerror message=E2=80=9D on ports 5C and 9C is: scsi 5:0:4:0: Failed to get diagnostic page 0x8000002 scsi 5:0:4:0: Failed to bind enclosure -19 =3D=3D=3D=3D Most testing is done with Ubuntu 14.04.1 running Ubuntu=E2=80=99s suppl= ied mainline kernel 3.16.0-rc6.=20 # modprobe -v mvsas insmod /lib/modules/3.16.0-031600rc6-generic/kernel/drivers/scsi/scsi_transpor= t_sas.ko insmod /lib/modules/3.16.0-031600rc6-generic/kernel/drivers/scsi/libsas/libsas= =2Eko insmod /lib/modules/3.16.0-031600rc6-generic/kernel/drivers/scsi/mvsas/= mvsas.ko =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Other tested kernels, with similar results =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D kernel Mainline 3.16-20140724 kernel Ubuntu 3.13.11 kernel Ubuntu 3.13.0-24 kernel Ubuntu 3.12.25 kernel Ubuntu 2.6.32 =3D no SAS expander detected -> no further testing =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D No drives attached to expander =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D # lsscsi [4:0:0:0] disk ATA OCZ-VERTEX 1.3 /dev/sda [5:0:0:0] enclosu HP HP SAS EXP Card 2.08 - =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 2C =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D # lsscsi [4:0:0:0] disk ATA OCZ-VERTEX 1.3 /dev/sda [6:0:0:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdb [6:0:1:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdc [6:0:2:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdd [6:0:3:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sde [6:0:4:0] enclosu HP HP SAS EXP Card 2.08 - =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 3C =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D # lsscsi [4:0:0:0] disk ATA OCZ-VERTEX 1.3 /dev/sda [6:0:4:0] enclosu HP HP SAS EXP Card 2.08 - [6:0:5:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdb [6:0:6:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdc [6:0:7:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdd [6:0:8:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sde =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 4C =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D # lsscsi [4:0:0:0] disk ATA OCZ-VERTEX 1.3 /dev/sda [6:0:4:0] enclosu HP HP SAS EXP Card 2.08 - [6:0:9:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdb [6:0:10:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdc [6:0:11:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sdd [6:0:12:0] disk ATA Hitachi HDS5C302 AAB0 /dev/sde =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 5C =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D scsi 5:0:4:0: Failed to get diagnostic page 0x8000002 scsi 5:0:4:0: Failed to bind enclosure -19 # lsscsi [4:0:0:0] disk ATA OCZ-VERTEX 1.3 /dev/sda [5:0:4:0] enclosu HP HP SAS EXP Card 2.08 - =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 6C =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Kernel crash (data from OCR-ed screenshot): [ 263.190030] R13 ffff88020e837808 R14: ffff88021b4a0080 R15: ffff88003= 6cll200 [ 269.130052] FS: 00007f9ef5abb740(0000) GS:ffff88021b200000(0000) knlGS:0000000000000000 =20 [ 269.190074] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 269.190091] CR2 00007f9ef5ac2000 CR3: 000000020fbd8000 CR4: 000000000= 00407f0 [ 269.190111] Stack: =20 [ 269.190118] 0000000000000000 0000000000000002 ffff88021f5f7f08 dead000000200200 =20 [ 269.190145] ffff38020dl037b0 0000000000000046 ffff88020eb81e38 ffffffff811b06ae =20 [ 269.190171] ffff38020e837798 ffff88020d69bl40 ffff88020dl037b0 ffff88020dl00000 =20 [ 269.190197] Call Trace: [ 269.190210] [] ? dma_pool_alloc+0xce/0x100 [ 269.190229] [] mvs_task_prep+0x58b/0x620 [mvsas] [ 269.190248] [] mvs_task_exec.isra.14+0x68/0xf0 [mvsa= s] [ 269.190269] [] mvs_queue_command+0x39/0x40 [mvsas] [ 269.190291] [] sas_ata_qc_issue+0x28b/0x2d0 [libsas] [ 269.190312] [] ata_qc_issue+0xl8f/0x2d0 [ 269.190331] [] ? ata_scsi_rw_xlat+0x230/0x230 [ 269.190349] [] ata_scsi_translate+0xb4/0x1b0 [ 269.190369] [] ata_sas_queuecmd+0xl21/0x2b0 [ 269.190389] [] sas_queuecommand+0x20f/0x280 [libsas] [ 269.190409] [] scsi_dispatch_cmd+0xce/0x280 [ 269.190428] [] scsi_request_fn+0x372/0x490 [ 269.190447] [] __blk_run_queue+0x37/0x50 [ 269.190465] [] __elv_add_request+0xef/0x310 [ 269.190483] [] blk_execute_rq_noujait+0xb3/0x190 [ 269.190504] [] ? kmem_cache_alloc_node+0xle3/0x200 [ 269.190523] [] blk_execute_rq+0x8d/0x160 [ 269.190542] [] ? security_capable+0x18/0x20 [ 269.190561] [] ? ns_capable+0x30/0x60 [ 269.190578] [] ? capable+0x17/0x20 [ 269.191191] [] ? blk_verify_command+0x25/0x70 [ 269.191806] [] sg_io+0x168/0x2c0 [ 269.192422] [] scsi_cmd_ioct1+0x227/0x520 [ 269.193030] [] ? __handle_mm_fault+0x1db/0x360 [ 269.193631] [] scsi_cmd_blk_ioctl+0x4e/0x60 [ 269.194231] [] sd_ioctl+0xd7/0xl60 [ 269.194810] [] blkdev_ioctl+0xde/0x810 [ 269.195373] [] ? vtime_account_user+0x5d/0x70 [ 269.195921] [] block_ioct1+0x40/0x50 [ 269.196449] [] do_vfs_ioct1+0x75/0x2c0 [ 269.196966] [] ? syscall_trace_enter+0x165/0x280 [ 269.197475] [] ? context_tracking_user_enter+0x25/0x= 30 [ 269.197972] [] SyS_ioctl+0x91/0xb0 [ 269.198458] [] tracesys+0xe1/0xe6 [ 269.198930] Code: 00 00 48 8b 0c c8 0f 84 a7 02 00 00 44 89 c0 41 b9= 00 10 00 00 48 8d 34 80 48 3d 04 70 48 3d b4 c3 b3 55 02 00 8b 43 58 89 46 lc <8b> 89 54 02 00 00 44 89 C0 8b 7b 58 0d 00 00 00 = 70 4c 8b 53 48 [ 269.200019] RIP [] mvs_task_prep_ata+0x80/0x3a0 [mv= sas] =20 [ 269.200534] RSP =20 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 7C =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Kernel crash (from OCR-ed screenshot): [ 38.934484] OS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.934501] CR2: 0000000000000254 CR3: 0000000001C12000 CR4: 000000000= 00407e0 [ 38.934522] Stack: [ 38.934529] ffff88021b214400 ffff880200000000 0000000000000282 0000000000000000 [ 38.934556] ffff8300d4c03618 0000000000000046 ffff8300d5b01e38 ffffffff811b06ae [ 38.934582] ffff88021b214400 ffff88020d65el40 ffff8800d4c03618 ffff8800d4c00000 [ 38.934608] Call Trace: [ 38.934619] [] ? dma_pool_alloc+0xce/0xl00 [ 38.934638] [] mvs_task_prep+0x58b/0x620 [mvsas] [ 38.934659] [] ? ttwu_do_activate.constprop.111+0x66= /0x70 [ 38.934682] [] mvs_task_exec.isra.14+0x68/0xf0 [mvsa= s] [ 38.934703] [] mvs_queue_command+0x39/0x40 [mvsas] [ 38.934725] [] sas_ata_qc_issue+0x28b/0x2d0 [libsas] [ 38.934747] [] ata_qc_issue+0xl8f/0x2d0 [ 38.934764] [] ata_exec_internal_sg+0x2f8/0x5d0 [ 38.934783] [] ata_exec_internal+0x72/0xb0 [ 38.934802] [] ata_do_dev_read_id+0x2a/0x30 [ 38.934821] [] ? sas_ata_internal_abort+0xl20/0xl20 = [libsas] [ 38.934843] [] ata_dev_read_id+0x245/0x460 [ 38.934861] [] ? ata_eh_reset+0x24c/0xe20 [ 38.934878] [] ata_eh_revalidate_and_attach+0xl98/0x= 3a0 [ 38.934899] [] ata_eh_recover+0x599/0x7e0 [ 38.934917] [] ? sata_print_link_status+0xc0/0xc0 [ 38.934937] [] ? sas_ata_internal_abort+0xl20/0xl20 = [libsas] [ 38.934959] [] ? sata_std_hardreset+0x50/0x50 [ 38.934978] [] ? sas_ata_internal_abort+0xl20/0xl20 = [libsas] [ 38.935618] [] ? sata_std_hardreset+0x50/0x50 [ 38.936257] [] ? sas_ata_internal_abort+0xl20/0xl20 = [libsas] [ 38.936905] [] ata_do_eh+0x52/0xc0 [ 38.937538] [] ? sata_print_link_status+0xc0/0xc0 [ 38.938163] [] ata_std_error_handler+0x47/0x80 [ 38.938783] [] ? ata_eh_handle_port_resume+0x38/0xl6= 0 [ 38.939410] [] ata_scsi_port_error_handler+0x39b/0x5= a0 [ 38.940024] [] async_sas_ata_eh+0x55/0x90 [libsas] [ 38.940621] [] async_run_entry_fn+0x3b/0xl40 [ 38.941201] [] process_one_work+0xl7f/0x4c0 [ 38.941767] [] worker_thread+0xllb/0x3f0 [ 38.942320] [] ? create_and_start_worker+0x80/0x80 [ 38.942864] [] kthread+0xc9/0xe0 [ 38.943398] [] ? flush_kthread_worker+0xb0/0xb0 [ 38.943927] [] ret_from_fork+0x7c/0xb0 [ 38.944443] [] ? flush_kthread_worker+0xb0/0xb0 [ 38.944956] Code: 00 00 48 8b 0c c8 0f 84 a7 02 00 00 44 89 c0 41 b9 0= 0 10 00 00 48 8d 34 80 48 8d 04 70 48 8d b4 c3 b8 55 02 00 8b 43 58 89 46 lc <8b> 89 54 02 00 00 44 89 c0 8b 7b 58 Od 00 00 00 = 70 4c 8b 53 48 [ 38.946132] RIP [] mvs_task_prep_ata+0x80/0x3a0 [mvs= as] 38.9466881 RSP =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 8C =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Kernel crash (text from OCR-ed screenshot): [ 335.117520] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 335.117537] CR2: 00007fff5S6452C0 CR3: 0000000001C12000 CR4: 00000000= 000407e0 [ 335.117557] Stack: [ 335.117565] ffff88021b214400 ffff880200000000 0000000000000282 74737572745f7374 [ 335.117591] ffff8800d5b03618 0000000000000046 ffff88020f301e38 ffffffff311b06ae [ 335.117617] ffff8802lb214400 ffff8800d4bda280 ffff8800d5b03618 ffff8800d5b00000 [ 335.117644] Call Trace: [ 335.117656] [] ? dma_pool_alloc+0xce/0x100 [ 335.117676] [] mvs_task_prep+0x58b/0x620 [mvsas] [ 335.117697] [] ? ttwu_do_activate.constprop.111+0x6= 6/0x70 [ 335.117720] [] mvs_task_exec.isra.14+0x68/0xf0 [mvs= as] [ 335.117741] [] mvs_queue_command+0x39/0x40 [mvsas] [ 335.117764] [] sas_ata_qc_issue+0x28b/0x2d0 [libsas= ] [ 335.117786] [] ata_qc_issue+0xl8f/0x2d0 [ 335.117804] [] ata_exec_internal_sg+0x2f8/0x5d0 [ 335.117823] [] ata_exec_internal+0x72/0xb0 [ 335.117842] [] ata_do_dev_read_id+0x2a/0x30 [ 335.117861] [] ? sas_ata_internal_abort+0xl20/0xl20 [libsas] [ 335.117883] [] ata_dev_read_id+0x245/0x460 [ 335.117901] [] ? ata_eh_reset+0x24c/0xe20 [ 335.117919] [] ata_eh_revalidate_and_attach+0xl98/0= x3a0 [ 335.117940] [] ata_eh_recover+0x599/0x7e0 [ 335.117959] [] ? sata_print_link_status+0xc0/0xc0 [ 335.117979] [] ? sas_ata_internal_abort+0xl20/0xl20 [libsas] [ 335.118001] [] ? sata_std_hardreset+0x50/0x50 [ 335.118019] [] ? sas_ata_internal_abort+0xl20/0xl20 [libsas] [ 335.118041] [] ? sata_std_hardreset+0x50/0x50 [ 335.118061] [] ? sas_ata_internal_abort+0xl20/0xl20 [libsas] [ 335.118083] [] ata_do_eh+0x52/0xc0 [ 335.118709] [] ? sata_print_link_status+0xc0/0xc0 [ 335.119338] [] ata_std_error_handler+0x47/0x80 [ 335.119970] [] ? ata_eh_handle_port_resume+0x38/0xl= 60 [ 335.120600] [] ata_scsi_port_error_handler+0x39b/0x= 5a0 [ 335.121215] [] async_sas_ata_eh+0x55/0x90 [libsas] [ 335.121812] [] async_run_entry_fn+0x3b/0xl40 [ 335.122394] [] process_one_work+0xl7f/0x4c0 [ 335.122963] [] ? maybe_create_worker+0xbb/0xlc5 [ 335.123520] [] worker_thread+0xllb/0x3f0 [ 335.124064] [] ? create_and_start_worker+0x80/0x80 [ 335.124605] [] kthread+0xc9/0xe0 [ 335.125133] [] ? flush_kthread_worker+0xb0/0xb0 [ 335.125654] [] ret_from_fork+0x7c/0xb0 [ 335.126169] [] ? flush_kthread_worker+0xb0/0xb0 [ 335.126685] Code: 00 00 48 8b 0c C8 0f 84 a7 02 00 00 44 89 C0 41 b9 = 00 10 00 00 48 8d 34 80 48 8d 04 70 48 8d b4 c3 b8 55 02 00 8b 43 58 89 46 lc <8b> 89 54 02 00 00 44 89 C0 8b 7b 58 0d 00 00 00 = 70 4c 8b 53 48 [ 335.127858] RIP [] mvs_task_prep_ata+0x80/0x3a0 [mv= sas] [ 335.128415] RSP =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 9C =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D scsi 5:0:4:0: Failed to get diagnostic page 0x8000002 scsi 5:0:4:0: Failed to bind enclosure -19 # lsscsi [4:0:0:0] disk ATA OCZ-VERTEX 1.3 /dev/sda [5:0:4:0] enclosu HP HP SAS EXP Card 2.08 - =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D With 4 drives (brown#4) attached to expander port 9C [a second time], =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Kernel crash (text from screen OCR): [ 35.957789] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.957806] CR2: 00007f6c3faf8000 CR3: 0000000001c12000 CR4: 000000000= 00407f0 [ 35.957826] Stack: [ 35.957833] ffff88021b314400 ffff880200000000 0000000000000282 eb3377d73948ca01 [ 35.957860] ffff88020ed037b0 0000000000000046 ffff88020ec01e38 ffffffff811b06ae [ 35.957885] ffff88021b314400 ffff88020d66ddc0 ffff88020ed037b0 ffff88020ed00000 [ 35.957912] Call Trace: [ 35.957924] [] ? dma_pool_alloc+0xce/0x100 [ 35.957944] [] mvs_task_prep+0x58b/0x620 [mvsas] [ 35.957965] [] ? ttwu_do_activate.constprop.111+0x66= /0x70 [ 35.957987] [] mvs_task_exec.isra.14+0x68/0xf0 [mvsa= s] [ 35.958008] [] mvs_queue_command+0x39/0x40 [mvsas] [ 35.958030] [] sas_ata_qc_issue+0x28b/0x2d0 [libsas] [ 35.958052] [] ata_qc_issue+0xl8f/0x2d0 [ 35.958069] [] ata_exec_internal_sg+0x2f8/0x5d0 [ 35.958089] [] ata_exec_internal+0x72/0xb0 [ 35.958107] [] ata_do_dev_read_id+0x2a/0x30 [ 35.958126] [] ? sas_ata_internal_abort+0xl20/0xl20 = [libsas] [ 35.958148] [] ata_dev_read_id+0x245/0x460 [ 35.958166] [] ? ata_eh_reset+0x24c/0xe20 [ 35.958185] [] ata_eh_revalidate_and_attach+0xl98/0x= 3a0 [ 35.958205] [] ata_eh_recover+0x599/0x7e0 [ 35.958223] [] ? sata_print_link_status+0xc0/0xc0 [ 35.958243] [] ? sas_ata_internal_abort+0xl20/0xl20 = [libsas] [ 35.958265] [] ? sata_std_hardreset+0x50/0x50 [ 35.958283] [] ? sas_ata_internal_abort+0xl20/0xl20 = [libsas] [ 35.958305] [] ? sata_std_hardreset+0x50/0x50 [ 35.958324] [] ? sas_ata_internal_abort+0xl20/0xl20 = [libsas] [ 35.958346] [] ata_do_eh+0x52/0xc0 [ 35.958971] [] ? sata_print_link_status+0xc0/0xc0 [ 35.959600] [] ata_std_error_handler+0x47/0x80 [ 35.960231] [] ? ata_eh_handle_port_resume+0x38/0xl6= 0 [ 35.960861] [] ata_scsi_port_error_handler+0x39b/0x5= a0 [ 35.961475] [] async_sas_ata_eh+0x55/0x90 [libsas] [ 35.962071] [] async_run_entry_fn+0x3b/0xl40 [ 35.962652] [] process_one_work+0xl7f/0x4c0 [ 35.963218] [] ? maybe_create_worker+0xbb/0xlc5 [ 35.963775] [] worker_thread+0x11b/0x3f0 [ 35.964319] [] ? create_and_start_worker+0x80/0x80 [ 35.964858] [] kthread+0xc9/0xe0 [ 35.965385] [] ? flush_kthread_worker+0xb0/0xb0 [ 35.965904] [] ret_from_fork+0x7c/0xb0 [ 35.966418] [] ? fIush_kthread_worker+0xb0/0xb0 [ 35.966932] Code: 00 00 48 8b 0c c8 0f 84 a7 02 00 00 44 89 C0 41 b9 0= 0 10 00 00 48 8d 34 80 48 8d 04 70 48 8d b4 c3 b8 55 02 00 8b 43 58 89 46 lc <8b> 89 54 02 00 00 44 89 C0 8b 7b 58 0d 00 00 00 = 70 4c 8b 53 48 [ 35.968100] RIP [] mvs_task_prep_ata+0x80/0x3a0 [mvs= as] [ 35.968656] RSP =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D # lspci -nn -s 01: -vv 01:00.0 RAID bus controller [0104]: Marvell Technology Group Ltd. 88SE9= 485 SAS/SATA 6Gb/s controller [1b4b:9485] (rev 03) Subsystem: Marvell Technology Group Ltd. Device [1b4b:9480] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >TAbort- SERR-