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Date:   Thu, 4 Jan 2018 13:49:30 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Michal Hocko <mhocko@...e.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Jérôme Glisse <jglisse@...hat.com>,
        Balbir Singh <bsingharora@...il.com>,
        Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Dan Williams <dan.j.williams@...el.com>,
        David Nellans <dnellans@...dia.com>,
        Evgeny Baskakov <ebaskakov@...dia.com>,
        Johannes Weiner <hannes@...xchg.org>,
        John Hubbard <jhubbard@...dia.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Mark Hairgrove <mhairgrove@...dia.com>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Sherry Cheung <SCheung@...dia.com>,
        Subhash Gutti <sgutti@...dia.com>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Bob Liu <liubo95@...wei.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp-robot] [mm/memory_hotplug]  3072e413e3:
 page_allocation_failure:order:#,mode:#(GFP_KERNEL|__GFP_RETRY_MAYFAIL|__GFP_ZERO),nodemask=(null)


FYI, we noticed the following commit (built with gcc-7):

commit: 3072e413e305e353cd4654f8a57d953b66e85bf3 ("mm/memory_hotplug: introduce add_pages")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: nvml
with following parameters:

	group: obj
	test: pmem
	nr_pmem: 1
	fs: ext4
	mount_option: dax



on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 2 -m 1G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):



         Starting /etc/rc.local Compatibility...
         Starting OpenBSD Secure Shell server...
         Starting LKP bootstrap...
rc.local[2139]: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/lkp/lkp/src/bin
LKP: HOSTNAME vm-lkp-hsw01-1G-10, MAC 52:54:00:12:34:56, kernel 4.13.0-09235-g3072e41 1, serial console /dev/ttyS0
[    6.268581] systemd-udevd: page allocation failure: order:9, mode:0x14084c0(GFP_KERNEL|__GFP_RETRY_MAYFAIL|__GFP_ZERO), nodemask=(null)
[    6.270880] systemd-udevd cpuset=/ mems_allowed=0
[    6.271638] CPU: 0 PID: 1811 Comm: systemd-udevd Tainted: G           O    4.13.0-09235-g3072e41 #1
[    6.273289] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[    6.274930] Call Trace:
[    6.275644]  dump_stack+0x8e/0xc8
[    6.276289]  warn_alloc+0xe4/0x165
[    6.276922]  ? find_next_bit+0xb/0xd
[    6.277579]  __alloc_pages_nodemask+0xe1a/0xef1
[    6.278476]  vmemmap_alloc_block+0x43/0x84
[    6.279224]  alloc_block_buf+0x15/0x3a
[    6.280040]  __vmemmap_alloc_block_buf+0x12b/0x13e
[    6.280798]  vmemmap_populate+0x115/0x2ed
[    6.281487]  sparse_mem_map_populate+0x27/0x38
[    6.282230]  sparse_add_one_section+0x76/0x15b
[    6.282949]  __add_pages+0x122/0x211
[    6.283607]  add_pages+0x1a/0x68
[    6.284227]  arch_add_memory+0x43/0x4b
[    6.284888]  devm_memremap_pages+0x27a/0x396
[    6.285596]  __wrap_devm_memremap_pages+0x50/0x59 [nfit_test_iomap]
[    6.286467]  pmem_attach_disk+0x305/0x4e4 [nd_pmem]
[    6.287223]  ? kfree_const+0x20/0x23
[    6.287868]  ? kobject_put+0x165/0x16d
[    6.288531]  ? put_device+0x17/0x1a
[    6.289169]  nd_pmem_probe+0x8f/0x94 [nd_pmem]
[    6.289889]  nvdimm_bus_probe+0x6c/0x10b [libnvdimm]
[    6.290653]  driver_probe_device+0x1d4/0x3cb
[    6.291359]  __driver_attach+0xbb/0xde
[    6.292018]  ? driver_probe_device+0x3cb/0x3cb
[    6.292738]  ? driver_probe_device+0x3cb/0x3cb
[    6.293456]  bus_for_each_dev+0x6d/0x85
[    6.294121]  driver_attach+0x1e/0x20
[    6.294771]  bus_add_driver+0x13b/0x222
[    6.295440]  driver_register+0x88/0xbf
[    6.296098]  ? 0xffffffffa0005000
[    6.296724]  __nd_driver_register+0x75/0x7c [libnvdimm]
[    6.297506]  ? 0xffffffffa0005000
[    6.298129]  pmem_init+0x1e/0x1000 [nd_pmem]
[    6.298834]  do_one_initcall+0x90/0x131
[    6.299503]  ? kmem_cache_alloc_trace+0xc9/0x179
[    6.300290]  ? do_init_module+0x27/0x1dd
[    6.300964]  do_init_module+0x5f/0x1dd
[    6.301627]  load_module+0x1ae2/0x20ea
[    6.302291]  ? kernel_read+0x43/0x55
[    6.302936]  SyS_finit_module+0xb8/0xc5
[    6.303606]  ? SyS_finit_module+0xb8/0xc5
[    6.304291]  do_syscall_64+0x69/0xee
[    6.304936]  entry_SYSCALL64_slow_path+0x25/0x25
[    6.305670] RIP: 0033:0x7ff6c5c940f9
[    6.306316] RSP: 002b:00007ffcd9b9da98 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    6.307594] RAX: ffffffffffffffda RBX: 0000562413ad7ed0 RCX: 00007ff6c5c940f9
[    6.308535] RDX: 0000000000000000 RSI: 00007ff6c65ac265 RDI: 000000000000000f
[    6.309477] RBP: 00007ff6c65ac265 R08: 0000000000000000 R09: 00007ffcd9b9e010
[    6.310416] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000000
[    6.311360] R13: 0000562413acfc70 R14: 0000000000020000 R15: 0000562412068924
[    6.312319] Mem-Info:
[    6.360020] active_anon:15233 inactive_anon:2237 isolated_anon:0
[    6.360020]  active_file:4 inactive_file:3 isolated_file:0
[    6.360020]  unevictable:106641 dirty:0 writeback:0 unstable:0
[    6.360020]  slab_reclaimable:6418 slab_unreclaimable:2577
[    6.360020]  mapped:3538 shmem:2265 pagetables:696 bounce:0
[    6.360020]  free:62722 free_pcp:128 free_cma:51196
[    6.372019] Node 0 active_anon:61340kB inactive_anon:8948kB active_file:16kB inactive_file:12kB unevictable:426564kB isolated(anon):0kB isolated(file):0kB mapped:14152kB dirty:0kB writeback:0kB shmem:9060kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[    6.375805] Node 0 DMA free:3520kB min:788kB low:984kB high:1180kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[    6.388022] lowmem_reserve[]: 0 656 656 656 656


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong

View attachment "config-4.13.0-09235-g3072e41" of type "text/plain" (108157 bytes)

View attachment "job-script" of type "text/plain" (4053 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (17748 bytes)

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