FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit f47233c2d34f243ecdaac179c3408a39ff9216a7 ("x86/mm/ASLR: Propagate base load address calculation")


+---------------------------------------------------------+-------+------------+
|                                                         | v3.19 | f47233c2d3 |
+---------------------------------------------------------+-------+------------+
| boot_successes                                          | 54    | 0          |
| boot_failures                                           | 10    | 10         |
| BUG:kernel_test_hang                                    | 10    |            |
| WARNING:at_arch/x86/mm/ioremap.c:#__ioremap_check_ram() | 0     | 10         |
| backtrace:create_setup_data_nodes                       | 0     | 10         |
| backtrace:boot_params_ksysfs_init                       | 0     | 10         |
| backtrace:kernel_init_freeable                          | 0     | 10         |
+---------------------------------------------------------+-------+------------+


[    0.490087] NET: Registered protocol family 16
[    0.498533] cpuidle: using governor menu
[    0.499891] ------------[ cut here ]------------
[    0.500021] WARNING: CPU: 0 PID: 1 at arch/x86/mm/ioremap.c:63 __ioremap_check_ram+0x445/0x4a0()
[    0.501015] ioremap on RAM pfn 0x3416
[    0.502013] Modules linked in:
[    0.503017] CPU: 0 PID: 1 Comm: swapper Not tainted 3.19.0-04793-g2c303f7 #3
[    0.504013] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    0.505014]  0000000000000009 ffff880012d8bb88 ffffffff81cedc16 ffff880012d8bbc8
[    0.507424]  ffffffff810dd1a0 0000000000000000 0000000000000001 0000000000000001
[    0.509420]  0000000000003416 0000000000000001 0000000000000001 ffff880012d8bc28
[    0.511415] Call Trace:
[    0.512028]  [<ffffffff81cedc16>] dump_stack+0x2e/0x3e
[    0.513023]  [<ffffffff810dd1a0>] warn_slowpath_common+0xe0/0x160
[    0.514021]  [<ffffffff810dd316>] warn_slowpath_fmt+0x56/0x60
[    0.515022]  [<ffffffff8107f4a5>] __ioremap_check_ram+0x445/0x4a0
[    0.516022]  [<ffffffff8107f060>] ? trace_do_page_fault+0x9b0/0x9b0
[    0.517020]  [<ffffffff810ec948>] walk_system_ram_range+0x128/0x140
[    0.518022]  [<ffffffff82d9081f>] ? create_setup_data_nodes+0xd1/0x488
[    0.519019]  [<ffffffff82d9081f>] ? create_setup_data_nodes+0xd1/0x488
[    0.520021]  [<ffffffff8107f882>] __ioremap_caller+0x172/0x850
[    0.521021]  [<ffffffff81080064>] ioremap_cache+0x24/0x30
[    0.522019]  [<ffffffff82d9081f>] create_setup_data_nodes+0xd1/0x488
[    0.523023]  [<ffffffff81493c9c>] ? internal_create_group+0x4ac/0x830
[    0.524020]  [<ffffffff82d90c76>] boot_params_ksysfs_init+0xa0/0xf9
[    0.525020]  [<ffffffff810005f1>] do_one_initcall+0x371/0x4c0
[    0.526019]  [<ffffffff82d90bd6>] ? create_setup_data_nodes+0x488/0x488
[    0.527024]  [<ffffffff82d8afd5>] kernel_init_freeable+0x368/0x4ba
[    0.528022]  [<ffffffff81ce15d0>] ? rest_init+0x260/0x260
[    0.529020]  [<ffffffff81ce15e6>] kernel_init+0x16/0x240
[    0.530023]  [<ffffffff81d0253a>] ret_from_fork+0x7a/0xb0
[    0.531021]  [<ffffffff81ce15d0>] ? rest_init+0x260/0x260
[    0.532033] ---[ end trace b6a2b7ddc92922e5 ]---
[    0.534367] ACPI: bus type PCI registered



Thanks,
Ying Huang