linux-kernel - linux/drivers/cpuidle: cpuidle_enter

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Date:   Wed, 7 Feb 2018 14:59:36 +0800
From:   Li Wang <wangli.ahau@...il.com>
To:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Colin Cross <ccross@...roid.com>,
        Nicholas Piggin <npiggin@...il.com>
Cc:     linux-kernel@...r.kernel.org
Subject: linux/drivers/cpuidle: cpuidle_enter_state() issue

Hi Kernel-developers,

The flowing call trace was catch from kernel-v4.15, could anyone help
to analysis the cpuidle problem?
or, if you need any more detail info pls let me know.

Test Env:
IBM KVM Guest on ibm-p8-kvm-03
POWER8E (raw), altivec supported
9216 MB memory, 107 GB disk space

--------8<----------------
[15002.722413] swapper/15: page allocation failure: order:0,
mode:0x1080020(GFP_ATOMIC), nodemask=(null)
[15002.853793] swapper/15 cpuset=/ mems_allowed=0
[15002.853932] CPU: 15 PID: 0 Comm: swapper/15 Not tainted 4.15.0 #1
[15002.854019] Call Trace:
[15002.854129] [c00000023ff77650] [c000000000940b50]
.dump_stack+0xac/0xfc (unreliable)
[15002.854285] [c00000023ff776e0] [c00000000026c678] .warn_alloc+0xe8/0x180
[15002.854376] [c00000023ff777a0] [c00000000026d50c]
.__alloc_pages_nodemask+0xd6c/0xf90
[15002.854490] [c00000023ff77980] [c0000000002e9cc0]
.alloc_pages_current+0x90/0x120
[15002.854624] [c00000023ff77a10] [c0000000007990cc]
.skb_page_frag_refill+0x8c/0x120
[15002.854746] [c00000023ff77aa0] [d000000003a561a8]
.try_fill_recv+0x368/0x620 [virtio_net]
[15003.422855] [c00000023ff77ba0] [d000000003a568ec]
.virtnet_poll+0x25c/0x380 [virtio_net]
[15003.423864] [c00000023ff77c70] [c0000000007c18d0] .net_rx_action+0x330/0x4a0
[15003.424024] [c00000023ff77d90] [c000000000960d50] .__do_softirq+0x150/0x3a8
[15003.424197] [c00000023ff77e90] [c0000000000ff608] .irq_exit+0x198/0x1b0
[15003.424342] [c00000023ff77f10] [c000000000015504] .__do_irq+0x94/0x1f0
[15003.424485] [c00000023ff77f90] [c000000000026d5c] .call_do_irq+0x14/0x24
[15003.424627] [c00000023bc63820] [c0000000000156ec] .do_IRQ+0x8c/0x100
[15003.424776] [c00000023bc638c0] [c000000000008b34]
hardware_interrupt_common+0x114/0x120
[15003.424963] --- interrupt: 501 at .snooze_loop+0xa4/0x1c0
    LR = .snooze_loop+0x60/0x1c0
[15003.425164] [c00000023bc63bb0] [c00000023bc63c50]
0xc00000023bc63c50 (unreliable)
[15003.425346] [c00000023bc63c30] [c00000000075104c]
.cpuidle_enter_state+0xac/0x390
[15003.425534] [c00000023bc63ce0] [c000000000157adc] .call_cpuidle+0x3c/0x70
[15003.425669] [c00000023bc63d50] [c000000000157e90] .do_idle+0x2a0/0x300
[15003.425815] [c00000023bc63e20] [c0000000001580ac]
.cpu_startup_entry+0x2c/0x40
[15003.425995] [c00000023bc63ea0] [c000000000045790]
.start_secondary+0x4d0/0x520
[15003.426170] [c00000023bc63f90] [c00000000000aa70]
start_secondary_prolog+0x10/0x14
-------------8<-------------------

Any response will be appreciated!

-- 
Regards,
Li Wang
Email: wangli.ahau@...il.com