FYI, we noticed the following commit:

commit e7c1db75fed821a961ce1ca2b602b08e75de0cd8 ("mm: Prevent __alloc_pages_nodemask() RCU CPU stall warnings")
https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next

in testcase: boot

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

caused below changes:


+----------------------------------------------------------------------+------------+------------+
|                                                                      | 7cebc6b63b | e7c1db75fe |
+----------------------------------------------------------------------+------------+------------+
| boot_successes                                                       | 0          | 0          |
| boot_failures                                                        | 14         | 14         |
| invoked_oom-killer:gfp_mask=0x                                       | 2          |            |
| Mem-Info                                                             | 2          |            |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes     | 2          |            |
| BUG:sleeping_function_called_from_invalid_context_at_mm/swap.c       | 12         | 14         |
| calltrace:run_init_process                                           | 12         | 14         |
| calltrace:SyS_execve                                                 | 7          | 5          |
| calltrace:SyS_exit_group                                             | 12         | 13         |
| calltrace:SyS_read                                                   | 1          |            |
| WARNING:at_fs/sysfs/dir.c:#sysfs_warn_dup                            | 2          | 1          |
| calltrace:parport_pc_init                                            | 2          | 1          |
| calltrace:SyS_finit_module                                           | 2          | 1          |
| WARNING:at_lib/kobject.c:#kobject_add_internal                       | 2          | 1          |
| calltrace:SyS_munmap                                                 | 2          |            |
| BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c | 0          | 8          |
| calltrace:SyS_clone                                                  | 0          | 1          |
+----------------------------------------------------------------------+------------+------------+



[    8.953192] BUG: sleeping function called from invalid context at mm/page_alloc.c:3746
[    8.956353] in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: swapper/0
[    8.958262] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W       4.9.0-rc1-00048-ge7c1db7 #1
[    8.961309] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[    8.964341]  ffff880029a03720 ffffffff81472549 ffffffff81e0d4c0 0000000002281220
[    8.967460]  ffff880029a03738 ffffffff810a8583 ffff8800364be080 ffff880029a037c0
[    8.970582]  ffffffff81190be5 ffffffff81e0d4c0 ffffffff81e0d4c0 ffffffff81e0d4c0
[    8.973694] Call Trace:
[    8.974871]  <IRQ> 
[    8.975317]  [<ffffffff81472549>] dump_stack+0x63/0x8a
[    8.977116]  [<ffffffff810a8583>] ___might_sleep+0xd3/0x120
[    8.978852]  [<ffffffff81190be5>] __alloc_pages_nodemask+0xd5/0x2f0
[    8.980663]  [<ffffffff811e5335>] alloc_pages_current+0x95/0x140
[    8.982401]  [<ffffffff811efd70>] new_slab+0x3c0/0x5a0
[    8.984001]  [<ffffffff811f1b4c>] ? kfree+0x15c/0x170
[    8.985648]  [<ffffffff811f1110>] ___slab_alloc+0x3a0/0x4b0
[    8.987316]  [<ffffffff818734a1>] ? inet_twsk_alloc+0x41/0x160
[    8.989031]  [<ffffffff818734a1>] ? inet_twsk_alloc+0x41/0x160
[    8.990743]  [<ffffffff811f1240>] __slab_alloc+0x20/0x40
[    8.992365]  [<ffffffff811f264f>] kmem_cache_alloc+0x17f/0x1c0
[    8.994079]  [<ffffffff818734a1>] inet_twsk_alloc+0x41/0x160
[    8.995763]  [<ffffffff8189103e>] tcp_time_wait+0x4e/0x290
[    8.997414]  [<ffffffff81884dbb>] tcp_rcv_state_process+0xd6b/0xd70
[    8.999199]  [<ffffffff813fd0fb>] ? security_sock_rcv_skb+0x3b/0x50
[    9.000989]  [<ffffffff8188e532>] tcp_v4_do_rcv+0xb2/0x200
[    9.002649]  [<ffffffff8188fde0>] tcp_v4_rcv+0x910/0xa10
[    9.004270]  [<ffffffff81905000>] ? ipv6_chk_mcast_addr+0x120/0x140
[    9.006068]  [<ffffffff818e03a8>] ? ip6_input_finish+0xf8/0x460
[    9.007792]  [<ffffffff81868a71>] ip_local_deliver_finish+0xa1/0x1d0
[    9.009590]  [<ffffffff81868d50>] ip_local_deliver+0x60/0xe0
[    9.011266]  [<ffffffff8188f4ba>] ? tcp_v4_early_demux+0x13a/0x150
[    9.013038]  [<ffffffff818686fd>] ip_rcv_finish+0xdd/0x3b0
[    9.014693]  [<ffffffff81869033>] ip_rcv+0x263/0x390
[    9.016257]  [<ffffffff81664fe0>] ? e1000_intr+0xa0/0x120
[    9.017904]  [<ffffffff81824993>] __netif_receive_skb_core+0x513/0xa60
[    9.019733]  [<ffffffff8105a52b>] ? native_apic_msr_write+0x2b/0x30
[    9.021513]  [<ffffffff8189521c>] ? tcp4_gro_receive+0x11c/0x1c0
[    9.023267]  [<ffffffff81824ef8>] __netif_receive_skb+0x18/0x60
[    9.024998]  [<ffffffff81824f78>] netif_receive_skb_internal+0x38/0xb0
[    9.026822]  [<ffffffff81826054>] napi_gro_receive+0xd4/0x130
[    9.028514]  [<ffffffff816679aa>] e1000_clean_rx_irq+0x19a/0x510
[    9.030252]  [<ffffffff81666e00>] e1000_clean+0x260/0x8c0
[    9.031892]  [<ffffffff810b7798>] ? account_entity_enqueue+0xd8/0x100
[    9.033707]  [<ffffffff818257f9>] net_rx_action+0x229/0x390
[    9.035367]  [<ffffffff81971934>] __do_softirq+0x104/0x2ab
[    9.037032]  [<ffffffff81086bf1>] irq_exit+0xf1/0x100
[    9.038616]  [<ffffffff81971674>] do_IRQ+0x54/0xd0
[    9.040149]  [<ffffffff8196f50c>] common_interrupt+0x8c/0x8c
[    9.041828]  <EOI> 
[    9.042256]  [<ffffffff8196e2e6>] ? native_safe_halt+0x6/0x10
[    9.044674]  [<ffffffff8196dfe0>] default_idle+0x20/0xf0
[    9.046295]  [<ffffffff81038d1f>] arch_cpu_idle+0xf/0x20
[    9.047923]  [<ffffffff8196e453>] default_idle_call+0x23/0x30
[    9.049628]  [<ffffffff810c75d9>] cpu_startup_entry+0x189/0x200
[    9.051355]  [<ffffffff81960785>] rest_init+0x85/0x90
[    9.053096]  [<ffffffff81ffaf7a>] start_kernel+0x407/0x414
[    9.054860]  [<ffffffff81ffa120>] ? early_idt_handler_array+0x120/0x120
[    9.056765]  [<ffffffff81ffa2d6>] x86_64_start_reservations+0x2a/0x2c
[    9.058658]  [<ffffffff81ffa415>] x86_64_start_kernel+0x13d/0x14c


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong