From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 81861] Oops by mvsas v0.8.16: sas: ataX: end_device-Y:0:Z: dev
error handler -> general protection fault, RIP: mvs_task_prep_ata+0x80/0x3a0
Date: Sat, 23 Aug 2014 20:04:10 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=81861
--- Comment #13 from linux-ide@crashplan.pro ---
It dies between printing the second and the third variable:
[ 30.455440] sas: DONE DISCOVERY on port 0, pid:128, result:0
[ 30.455502] sas: Enter sas_scsi_recover_host busy: 0 failed: 0
[ 30.455534] sas: ata6: end_device-5:0:20: dev error handler
[ 30.455744] sas: ata7: end_device-5:0:21: dev error handler
[ 30.456186] sas: ata8: end_device-5:0:22: dev error handler
[ 30.456367] sas: ata9: end_device-5:0:23: dev error handler
[ 30.611146] [0 ffff8800d8e255b8 44]
[ 30.611959] [0 ffff8800d8e255b8 46]
[ 30.612511] [2 ffff8800d8e25668
[ 30.612537] BUG: unable to handle kernel NULL pointer dereference at
0000000000000255
[ 30.613511] IP: [] mvs_task_prep+0x782/0xdd0 [mvsas]
[ 30.614003] PGD 0
[ 30.614486] Oops: 0000 [#1] SMP
[ 30.614967] Modules linked in: mvsas(OF) libsas scsi_transport_sas
x86_pkg_temp_thermal intel_powerclamp hid_generic coretemp usbhid kvm_intel
i915 kvm hid crct10dif_pclmul drm_kms_helper crc32_pclmul ghash_clmulni_intel
cryptd drm netconsole configfs i2c_algo_bit serio_raw mei_me lpc_ich mei lp
video mac_hid parport psmouse r8169 mii ahci libahci
[ 30.616702] CPU: 0 PID: 6 Comm: kworker/u4:0 Tainted: GF O
3.13.0-35-generic #62-Ubuntu
[ 30.617279] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./H81
Pro BTC, BIOS P1.80 07/21/2014
[ 30.617853] Workqueue: events_unbound async_run_entry_fn
[ 30.618426] task: ffff8802139b0000 ti: ffff8802139ae000 task.ti:
ffff8802139ae000
[ 30.619007] RIP: 0010:[] []
mvs_task_prep+0x782/0xdd0 [mvsas]
[ 30.619604] RSP: 0018:ffff8802139af8c0 EFLAGS: 00010096
[ 30.620188] RAX: ffff8800d8e03618 RBX: 0000000000000002 RCX:
0000000000002ace
[ 30.620779] RDX: 00000000000064e6 RSI: 0000000000000046 RDI:
0000000000000046
[ 30.621363] RBP: ffff8802139af958 R08: 0000000000000086 R09:
0000000000000426
[ 30.621941] R10: ffff880213bf4098 R11: 0000000000000001 R12:
0000000000000001
[ 30.622508] R13: ffff8800d8e00000 R14: ffff8800d8e03618 R15:
ffff88007f912500
[ 30.623068] FS: 0000000000000000(0000) GS:ffff88021f200000(0000)
knlGS:0000000000000000
[ 30.623649] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 30.624238] CR2: 0000000000000255 CR3: 0000000002c0e000 CR4:
00000000000407f0
[ 30.624844] Stack:
[ 30.625450] ffffffff8109d415 ffff88021f314440 ffff88021f314440
ffff88021f314440
[ 30.626097] ffff88020f97064c ffff8800d8e01e38 ffff880211d6fe00
ffff8800d8e25660
[ 30.626752] ffff88007f740080 ffff8800d8e02678 0000000181098129
ffff8800d8e25668
[ 30.627413] Call Trace:
[ 30.628072] [] ? sched_clock_cpu+0xb5/0x100
[ 30.628753] [] mvs_task_exec.isra.13+0x5d/0xe0 [mvsas]
[ 30.629450] [] mvs_queue_command+0x30c/0x320 [mvsas]
[ 30.630155] [] ? kmem_cache_alloc+0x1b2/0x1e0
[ 30.630867] [] ? sas_free_task+0x37/0x40 [libsas]
[ 30.631593] [] sas_ata_qc_issue+0x24b/0x290 [libsas]
[ 30.632326] [] ata_qc_issue+0x172/0x380
[ 30.633067] [] ata_exec_internal_sg+0x2b3/0x570
[ 30.633817] [] ata_exec_internal+0x5a/0xa0
[ 30.634570] [] ata_dev_read_id+0x274/0x550
[ 30.635332] [] ? sas_ata_printk+0x80/0x80 [libsas]
[ 30.636166] [] ata_eh_recover+0x74b/0x1310
[ 30.636938] [] ? ata_phys_link_online+0x30/0x30
[ 30.637721] [] ? sas_ata_printk+0x80/0x80 [libsas]
[ 30.638512] [] ? ata_phys_link_offline+0x30/0x30
[ 30.639314] [] ? sas_ata_printk+0x80/0x80 [libsas]
[ 30.640119] [] ? ata_phys_link_offline+0x30/0x30
[ 30.640933] [] ? sas_ata_printk+0x80/0x80 [libsas]
[ 30.641758] [] ata_do_eh+0x49/0xc0
[ 30.642588] [] ? ata_phys_link_online+0x30/0x30
[ 30.643425] [] ata_std_error_handler+0x3e/0x80
[ 30.644271] [] ata_scsi_port_error_handler+0x56a/0x940
[ 30.645128] [] async_sas_ata_eh+0x4a/0x80 [libsas]
[ 30.645996] [] async_run_entry_fn+0x37/0x130
[ 30.646871] [] process_one_work+0x182/0x450
[ 30.647750] [] worker_thread+0x121/0x410
[ 30.648638] [] ? rescuer_thread+0x430/0x430
[ 30.649534] [] kthread+0xd2/0xf0
[ 30.650429] [] ? kthread_create_on_node+0x1c0/0x1c0
[ 30.651321] [] ret_from_fork+0x7c/0xb0
[ 30.652211] [] ? kthread_create_on_node+0x1c0/0x1c0
[ 30.653102] Code: 03 47 23 a0 31 c0 e8 62 b7 4e e1 48 8b 4d c0 41 8b 45 58
48 c7 c7 07 47 23 a0 89 41 1c 48 89 ce 31 c0 e8 46 b7 4e e1 48 8b 45 d0 <41> 8b
8c 24 54 02 00 00 41 bc 00 10 00 00 41 8b 75 58 48 c7 c7
[ 30.655215] RIP [] mvs_task_prep+0x782/0xdd0 [mvsas]
[ 30.656195] RSP
[ 30.657163] CR2: 0000000000000255
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