Issue

• crashed in hpsa driver during a disk add
• crashed in hpsa driver when ruling hpssacli utility

crash> sys
     RELEASE: 3.10.0-327.3.1.el7.x86_64
     VERSION: #1 SMP Fri Nov 20 05:40:26 EST 2015
     MACHINE: x86_64  (2297 Mhz)
      MEMORY: 255.9 GB
       PANIC: "BUG: unable to handle kernel NULL pointer dereference at 0000000000000048"
...
crash> bt
PID: 14999  TASK: ffff881fed0ef300  CPU: 31  COMMAND: "systemd-udevd"
 #0 [ffff881fba90f640] machine_kexec at ffffffff81051beb
 #1 [ffff881fba90f6a0] crash_kexec at ffffffff810f2522
 #2 [ffff881fba90f770] oops_end at ffffffff8163e128
 #3 [ffff881fba90f798] no_context at ffffffff8162e27b
 #4 [ffff881fba90f7e8] __bad_area_nosemaphore at ffffffff8162e311
 #5 [ffff881fba90f830] bad_area at ffffffff8162e635
 #6 [ffff881fba90f858] __do_page_fault at ffffffff81640f95
 #7 [ffff881fba90f8b8] do_page_fault at ffffffff816410c3
 #8 [ffff881fba90f8e0] page_fault at ffffffff8163d388
    [exception RIP: hpsa_scsi_ioaccel_queue_command+50]
    RIP: ffffffffa004cc62  RSP: ffff881fba90f998  RFLAGS: 00010246
    RAX: 0000000000000001  RBX: ffff880036602700  RCX: ffff881fba90fa40
    RDX: 0000000006170007  RSI: ffff880036602700  RDI: ffff881feed08000
    RBP: ffff881fba90fa08   R8: 000000000000000a   R9: ffff881fce536010
    R10: 0000000000000000  R11: 0000000000000001  R12: ffff881feed08000
    R13: 0000000000000000  R14: 00000000df8ee1b0  R15: 0000000000000200
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #9 [ffff881fba90fa10] hpsa_ioaccel_submit at ffffffffa004d4f6 [hpsa]
#10 [ffff881fba90fa88] hpsa_scsi_queue_command at ffffffffa004de7f [hpsa]
#11 [ffff881fba90fad0] scsi_dispatch_cmd at ffffffff81417a9a
#12 [ffff881fba90faf8] scsi_request_fn at ffffffff81420a21
#13 [ffff881fba90fb60] __blk_run_queue at ffffffff812c7323
#14 [ffff881fba90fb78] queue_unplugged at ffffffff812c73da
#15 [ffff881fba90fbb0] blk_flush_plug_list at ffffffff812cbc58
#16 [ffff881fba90fc10] blk_finish_plug at ffffffff812cc064
#17 [ffff881fba90fc28] __do_page_cache_readahead at ffffffff81175c9e
#18 [ffff881fba90fce8] force_page_cache_readahead at ffffffff811761f9
#19 [ffff881fba90fd28] page_cache_sync_readahead at ffffffff81176283
#20 [ffff881fba90fd38] generic_file_aio_read at ffffffff8116a93b
#21 [ffff881fba90fe08] blkdev_aio_read at ffffffff812195ec
#22 [ffff881fba90fe30] do_sync_read at ffffffff811ddbfd
#23 [ffff881fba90ff08] vfs_read at ffffffff811de35c
#24 [ffff881fba90ff38] sys_read at ffffffff811deeaf
#25 [ffff881fba90ff80] system_call_fastpath at ffffffff816458c9

IP: [<ffffffffa010a8d7>] hpsa_scsi_ioaccel_queue_command+0x17/0x60 [hpsa]
PGD 836a7e067 PUD 8356b7067 PMD 0
Oops: 0002 [#1] PREEMPT SMP
Modules linked in: bonding ipv6 iTCO_wdt iTCO_vendor_support microcode serio_raw pcspkr sb_edac edac_core ipmi_si ipmi_msghandler joydev i2c_i801 lpc_ich hpilo hpwdt ioatdma dca sg bnx2x ptp pps_core libcrc32c mdio acpi_power_meter hwmon ext4 jbd2 mbcache sd_mod crc_t10dif crct10dif_common hpsa wmi mgag200 ttm drm_kms_helper drm i2c_algo_bit sysimgblt sysfillrect i2c_core syscopyarea dm_mirror dm_region_hash dm_log dm_mod
CPU: 27 PID: 8168 Comm: cmascsid Not tainted 3.10.0-327.rt56.171.el6rt.x86_64 #1
Hardware name: HP ProLiant BL460c Gen9, BIOS I36 09/24/2015