linux-kernel - [lkp] [x86/mm] 05024080c7: WARNING: CPU: 2 PID: 4250 at arch/x86/mm/tlb.c:410 flush_tlb

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Date:	Wed, 30 Mar 2016 13:56:56 +0800
From:	kernel test robot <xiaolong.ye@...el.com>
To:	Andy Lutomirski <luto@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [x86/mm] 05024080c7: WARNING: CPU: 2 PID: 4250 at
 arch/x86/mm/tlb.c:410 flush_tlb_func+0x1b4/0x1c0()

FYI, we noticed the below Call Trace warning log showed with your commit.

https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/pcid
commit 05024080c74d6a95ceac36a7c8aece0ed961aec7 ("x86/mm: Try to preserve old TLB entries using PCID")


[  112.925662] perf interrupt took too long (2506 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[  113.231394] perf interrupt took too long (5013 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
[  280.018660] ------------[ cut here ]------------
[  280.018990] WARNING: CPU: 2 PID: 4250 at arch/x86/mm/tlb.c:410 flush_tlb_func+0x1b4/0x1c0()
[  280.019560] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sg sr_mod cdrom sd_mod dcdbas ata_generic coretemp pata_acpi snd_hda_codec_realtek kvm_intel snd_hda_codec_generic ata_piix kvm irqbypass i7core_edac crc32c_intel serio_raw snd_hda_codec_hdmi pcspkr edac_core libata snd_hda_intel firewire_ohci usb_storage snd_hda_codec firewire_core crc_itu_t snd_hda_core snd_hwdep snd_pcm snd_timer snd soundcore shpchp acpi_cpufreq broadcom bcm_phy_lib
[  280.023594] CPU: 2 PID: 4250 Comm: mmap1_threads Not tainted 4.5.0-rc2-00217-g0502408 #3
[  280.024087] Hardware name: Dell Inc. Studio XPS 8000/0X231R, BIOS A01 08/11/2009
[  280.024579]  ffffffff81bbd1b8 ffff88013fc83ee0 ffffffff8141d762 0000000000000000
[  280.025213]  ffff88013fc83f18 ffffffff81079486 ffff88013fc9ba40 ffff88013da4bc08
[  280.025846]  ffffffffffffffff ffff88013da4bc08 0000000100000000 ffff88013fc83f28
[  280.026575] Call Trace:
[  280.026822]  <IRQ>  [<ffffffff8141d762>] dump_stack+0x4b/0x69
[  280.027238]  [<ffffffff81079486>] warn_slowpath_common+0x86/0xc0
[  280.027629]  [<ffffffff8107957a>] warn_slowpath_null+0x1a/0x20
[  280.027974]  [<ffffffff8106a694>] flush_tlb_func+0x1b4/0x1c0
[  280.028308]  [<ffffffff8106a4e0>] ? do_flush_tlb_all+0x50/0x50
[  280.028657]  [<ffffffff810f8f0b>] flush_smp_call_function_queue+0x7b/0x160
[  280.029046]  [<ffffffff810f9a33>] generic_smp_call_function_single_interrupt+0x13/0x60
[  280.029533]  [<ffffffff8104d917>] smp_call_function_interrupt+0x27/0x40
[  280.029903]  [<ffffffff818db39c>] call_function_interrupt+0x8c/0xa0
[  280.030266]  <EOI>  [<ffffffff810c481d>] ? rwsem_spin_on_owner+0x3d/0x90
[  280.030744]  [<ffffffff818d83b1>] rwsem_down_write_failed+0xe1/0x360
[  280.031110]  [<ffffffff8142b683>] call_rwsem_down_write_failed+0x13/0x20
[  280.031489]  [<ffffffff818d7cb0>] ? down_write+0x40/0x50
[  280.031819]  [<ffffffff811a6fc3>] vm_munmap+0x33/0x60
[  280.032137]  [<ffffffff811a7012>] SyS_munmap+0x22/0x30
[  280.032451]  [<ffffffff818d9cee>] entry_SYSCALL_64_fastpath+0x12/0x6d
[  280.032821] ---[ end trace f27b71185e2f9b5f ]---
[  280.032821] ---[ end trace f27b71185e2f9b5f ]---


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Xiaolong Ye

View attachment "config-4.5.0-rc2-00217-g0502408" of type "text/plain" (145401 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (16780 bytes)

View attachment "job.yaml" of type "text/plain" (3550 bytes)

View attachment "reproduce" of type "text/plain" (800 bytes)