[LTP] LTP master testing on arm64 hikey

[Naresh Kamboju]

LTP master branch tested on arm64 Hikey device and we have noticed
following observations,


LTP Syscalls,
-------------------
utimensat01 1 TBROK: can't read /etc/sudoers
https://lkft.validation.linaro.org/scheduler/job/203110#L12218

LTP fs,

The newly added test cases failed.

read_all_dev: fail
read_all_proc: fail
read_all_sys: fail

kernel dump when running LTP fs tests,

[ 1300.112030] raid6: int64x2  gen()   683 MB/s
[ 1300.184024] raid6: int64x2  xor()   603 MB/s
[ 1300.256046] raid6: int64x4  gen()  1056 MB/s
[ 1300.328016] raid6: int64x4  xor()   745 MB/s
[ 1300.400044] raid6: int64x8  gen()   986 MB/s
[ 1300.472043] raid6: int64x8  xor()   745 MB/s
[ 1300.544015] raid6: neonx1   gen()   742 MB/s
[ 1300.616036] raid6: neonx1   xor()   851 MB/s
[ 1300.688016] raid6: neonx2   gen()  1180 MB/s
[ 1300.760019] raid6: neonx2   xor()  1198 MB/s
[ 1300.832224] raid6: neonx4   gen()  1537 MB/s
[ 1300.904031] raid6: neonx4   xor()  1435 MB/s
[ 1300.976046] raid6: neonx8   gen()  1620 MB/s
[ 1301.048024] raid6: neonx8   xor()  1511 MB/s
[ 1301.052449] raid6: using algorithm neonx8 gen() 1620 MB/s
[ 1301.058045] raid6: .... xor() 1511 MB/s, rmw enabled
[ 1301.063203] raid6: using neon recovery algorithm
[ 1301.092481] xor: measuring software checksum speed
[ 1301.136024]    8regs     :  2280.000 MB/sec
[ 1301.180019]    8regs_prefetch:  2034.000 MB/sec
[ 1301.224018]    32regs    :  2797.000 MB/sec
[ 1301.268018]    32regs_prefetch:  2359.000 MB/sec
[ 1301.272805] xor: using function: 32regs (2797.000 MB/sec)
[ 1301.383951] Btrfs loaded, crc32c=crc32c-arm64-ce
[ 1301.426892] uart-pl011 f7112000.uart: no DMA platform data
[ 1301.662370] Unable to handle kernel paging request at virtual
address ffff7dfffee00000
[ 1301.662379] Mem abort info:
[ 1301.673872]   ESR = 0x96000006
[ 1301.673880]   Exception class = DABT (current EL), IL = 32 bits
[ 1301.673885]   SET = 0, FnV = 0
[ 1301.673890]   EA = 0, S1PTW = 0
[ 1301.673894] Data abort info:
[ 1301.673899]   ISV = 0, ISS = 0x00000006
[ 1301.673903]   CM = 0, WnR = 0
[ 1301.673912] swapper pgtable: 4k pages, 48-bit VAs, pgdp = 00000000be577448
[ 1301.673917] [ffff7dfffee00000] pgd=0000000001658803,
pud=0000000001659803, pmd=0000000000000000
[ 1301.674399] Internal error: Oops: 96000006 [#1] PREEMPT SMP
[ 1301.721431] Modules linked in: cuse btrfs xor zstd_decompress
zstd_compress xxhash raid6_pq tun asix usbnet crc32_ce crct10dif_ce
hci_uart adv7511 cec bluetooth ecdh_generic kirin_drm rfkill
drm_kms_helper dw_drm_dsi drm drm_panel_orientation_quirks fuse
[ 1301.721509] CPU: 1 PID: 7826 Comm: read_all Not tainted 4.16.0 #1
[ 1301.721513] Hardware name: HiKey Development Board (DT)
[ 1301.721519] pstate: 40000005 (nZcv daif -PAN -UAO)
[ 1301.721540] pc : read_port+0xd4/0x170
[ 1301.764723] lr : read_port+0x9c/0x170
[ 1301.764726] sp : ffff000016603d20

<>

[ 1310.644163] dwc2 f72c0000.usb: Mode Mismatch Interrupt: currently
in Host mode
[ 1310.644176] dwc2 f72c0000.usb: Mode Mismatch Interrupt: currently
in Host mode
[ 1310.644189] dwc2 f72c0000.usb: Mode Mismatch Interrupt: currently
in Host mode
[ 1327.832272] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 1327.832287] 4-...0: (0 ticks this GP)
idle=6a2/1/4611686018427387904 softirq=71103/71103 fqs=3228
[ 1327.832291] (detected by 3, t=6502 jiffies, g=70806, c=70805, q=121109)
[ 1327.832302] Task dump for CPU 4:
[ 1327.832307] read_all        R  running task        0  7825      1 0x0000020a
[ 1327.832319] Call trace:
[ 1327.832335]  __switch_to+0x9c/0xe0
[ 1327.832345]  page_wait_table+0x4280/0x4800

Broadcast message fro[ 1344.329981] systemd-journald[1642]: /dev/kmsg
buffer overrun, some messages lost.
m systemd-journald@hikey (Mon 2018-03-26 14:44:28 UTC):
[ 1344.341386] Unable to handle kernel paging request at virtual
address ffff7dfffee00000

kernel[2801]: [ 1301.674399[ 1344.352987] Mem abort info:
] Internal error: Oops: 96000006[ 1344.352992]   ESR = 0x96000006
 [#1] PREEMPT SMP
[ 1344.352998]   Exception class = DABT (current EL), IL = 32 bits
[ 1344.353001]   SET = 0, FnV = 0
[ 1344.353004]   EA = 0, S1PTW = 0
[ 1344.353007] Data abort info:
[ 1344.353011]   ISV = 0, ISS = 0x00000006
[ 1344.353014]   CM = 0, WnR = 0
[ 1344.353021] swapper pgtable: 4k pages, 48-bit VAs, pgdp = 00000000be577448
[ 1344.353025] [ffff7dfffee00000] pgd=0000000001658803,
pud=0000000001659803, pmd=0000000000000000
[ 1344.353041] Internal error: Oops: 96000006 [#2] PREEMPT SMP
[ 1344.353049] Modules linked in: cuse btrfs xor zstd_decompress
zstd_compress xxhash raid6_pq tun asix usbnet crc32_ce crct10dif_ce
hci_uart adv7511 cec bluetooth ecdh_generic kirin_drm rfkill
drm_kms_helper dw_drm_dsi drm drm_panel_orientation_quirks fuse
[ 1344.426968] CPU: 7 PID: 7825 Comm: read_all Tainted: G      D
   4.16.0 #1
[ 1344.426971] Hardware name: HiKey Development Board (DT)
[ 1344.426978] pstate: 40000005 (nZcv daif -PAN -UAO)
[ 1344.426992] pc : read_port+0xd4/0x170
[ 1344.426998] lr : read_port+0x9c/0x170

Ref links:
https://lkft.validation.linaro.org/scheduler/job/203101#L2159
https://lkft.validation.linaro.org/scheduler/job/203101#L8030
https://lkft.validation.linaro.org/scheduler/job/203110#L12218

Best regards
Naresh Kamboju