Re: [PATCH v3] arm64: mm: Fix NOMAP page initialization

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Hi Prakash,

On 2017/1/6 13:22, Prakash B wrote:
Hi Hanjun,


a update here, tested on 4.9,

 - Applied Ard's two patches only
 - Applied Robert's patch only

Both of them can work fine on D05 with NUMA enabled, which means
boot ok and LTP MM stress test is passed.

It is  not related to this patch set.
LTP "cpuset01" test  crashes with latest 4.9,  4.10-rc1 and 4.10-rc2 kernels on
Thunderx 2S .  Do you see any such behaviour on D05.

I didn't test "cpuset01" on D05 but according to the test in
Linaro, LTP full test is passed on D05 with Ard's 2 patches.


Any idea what might be causing this issue.

Since it's not happening on D05, maybe it's related to
the firmware? (just a wild guess...)

Thanks
Hanjun



  227.627546] cpuset01: page allocation stalls for 10096ms, order:0,
mode:0x24200ca(GFP_HIGHUSER_MOVABLE)
[  227.627586] CPU: 53 PID: 11017 Comm: cpuset01 Not tainted 4.9.04kNUMA+ #2
[  227.627591] Hardware name: www.cavium.com ThunderX Unknown/ThunderX
Unknown, BIOS 0.3 Aug 24 2016
[  227.627599] Call trace:
[  227.627623] [<ffff000008089f10>] dump_backtrace+0x0/0x238
[  227.627640] [<ffff00000808a16c>] show_stack+0x24/0x30
[  227.627656] [<ffff00000846fb50>] dump_stack+0x94/0xb4
[  227.627679] [<ffff0000081eb4f8>] warn_alloc+0x138/0x150
[  227.627686] [<ffff0000081ec0a4>] __alloc_pages_nodemask+0xb04/0xcf0
[  227.627697] [<ffff000008245988>] alloc_pages_vma+0xc8/0x270
[  227.627715] [<ffff00000821f604>] handle_mm_fault+0xc8c/0xfd8
[  227.627732] [<ffff00000809a488>] do_page_fault+0x2c0/0x368
[  227.627744] [<ffff0000080812ec>] do_mem_abort+0x6c/0xe0
[  227.627752] Exception stack(0xffff801f55823e00 to 0xffff801f55823f30)
[  227.627763] 3e00: 0000000000000000 0000ffff92682000
ffffffffffffffff 0000ffff9252b3e8
[  227.627774] 3e20: 0000000020000000 0000000000000000
000000000000a000 0000000000000003
[  227.627785] 3e40: 0000000000000022 ffffffffffffffff
0000000000000123 00000000000000de
[  227.627793] 3e60: ffff000008972000 0000000000000015
ffff801f55823e90 0000000000040900
[  227.627800] 3e80: 0000000000000000 ffff0000080836f0
0000000000000000 0000ffff92682000
[  227.627809] 3ea0: ffffffffffffffff 0000ffff92575d8c
0000000000000000 0000000000040900
[  227.627819] 3ec0: 0000ffff92682000 00000000000000f7
0000000000004fc0 0000000000000022
[  227.627828] 3ee0: 0000000000000000 0000000000000000
0000ffff925f5508 f7f7f7f7f7f7f7f7
[  227.627838] 3f00: 0000ffff92686ff0 0000000000002ab8
0101010101010101 0000000000000020
[  227.627847] 3f20: 0000000000000000 0000000000000000
[  227.627858] [<ffff000008083324>] el0_da+0x18/0x1c
[  227.627865] Mem-Info:
[  227.627899] active_anon:38613 inactive_anon:8174 isolated_anon:0
                active_file:25148 inactive_file:64173 isolated_file:0
                unevictable:742 dirty:0 writeback:0 unstable:0
                slab_reclaimable:29066 slab_unreclaimable:67304
                mapped:22876 shmem:2597 pagetables:1240 bounce:0
                free:65582521 free_pcp:1834 free_cma:0


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