linux-kernel - [x86/mm] e2a7dcce31: kernel_BUG_at

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Message-ID: <20170527133113.GA33229@inn.lkp.intel.com>
Date:   Sat, 27 May 2017 21:31:13 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     Rik van Riel <riel@...hat.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Nadav Amit <namit@...are.com>, Michal Hocko <mhocko@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...capital.net>, lkp@...org
Subject: [x86/mm]  e2a7dcce31: kernel_BUG_at_arch/x86/mm/tlb.c


FYI, we noticed the following commit:

commit: e2a7dcce31f10bd7471b4245a6d1f2de344e7adf ("x86/mm: Rework lazy TLB to track the actual loaded mm")
https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git x86/tlbflush_cleanup

in testcase: will-it-scale
with following parameters:

	test: readseek2
	cpufreq_governor: performance

test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two.
test-url: https://github.com/antonblanchard/will-it-scale


on test machine: 32 threads Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz with 64G memory

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


+------------------------------------------+------------+------------+
|                                          | ed3e5f1969 | e2a7dcce31 |
+------------------------------------------+------------+------------+
| boot_successes                           | 11         | 1          |
| boot_failures                            | 0          | 4          |
| kernel_BUG_at_arch/x86/mm/tlb.c          | 0          | 4          |
| invalid_opcode:#[##]                     | 0          | 4          |
| Kernel_panic-not_syncing:Fatal_exception | 0          | 4          |
+------------------------------------------+------------+------------+



[   22.777203] kernel BUG at arch/x86/mm/tlb.c:39!
[   22.784095] invalid opcode: 0000 [#1] SMP
[   22.788850] Modules linked in: ip_tables
[   22.793503] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.12.0-rc2-00061-ge2a7dcc #1
[   22.802448] Hardware name: Intel Corporation S2600CP/S2600CP, BIOS SE5C600.86B.99.99.x036.091920111209 09/19/2011
[   22.814399] task: ffff88081bb725c0 task.stack: ffffc90006358000
[   22.821303] RIP: 0010:leave_mm+0x39/0x40
[   22.825950] RSP: 0018:ffffc9000635be48 EFLAGS: 00010046
[   22.832065] RAX: 0000000000000001 RBX: ffffffff81fa8ba0 RCX: 000000000000001f
[   22.840312] RDX: ffffffff81f1f9a0 RSI: ffffffff81fa8ba0 RDI: 0000000000000002
[   22.848568] RBP: ffffc9000635be70 R08: 0000000000000760 R09: 0000000000000008
[   22.856823] R10: ffffc9000635be50 R11: 0000000000000760 R12: 0000000000000004
[   22.865069] R13: 0000000000000005 R14: 0000000000000030 R15: ffffffff81fa8d80
[   22.873325] FS:  0000000000000000(0000) GS:ffff88081f280000(0000) knlGS:0000000000000000
[   22.882838] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.889527] CR2: 000055635b17b0b8 CR3: 0000000001e09000 CR4: 00000000000406e0
[   22.897780] Call Trace:
[   22.900782]  ? intel_idle+0x109/0x110
[   22.905159]  cpuidle_enter_state+0xf2/0x2d0
[   22.910118]  cpuidle_enter+0x17/0x20
[   22.914388]  call_cpuidle+0x23/0x40
[   22.918551]  do_idle+0x189/0x1e0
[   22.922431]  cpu_startup_entry+0x1d/0x20
[   22.927091]  start_secondary+0x107/0x130
[   22.931750]  secondary_startup_64+0x9f/0x9f
[   22.936692] Code: 8b 05 04 bd fa 7e 83 f8 01 74 20 48 81 fa a0 f9 f1 81 74 15 55 31 d2 48 c7 c6 a0 f9 f1 81 31 ff 48 89 e5 e8 9a ff ff ff 5d f3 c3 <0f> 0b 0f 1f 44 00 00 66 66 66 66 90 55 48 8b 05 37 f5 02 01 48 
[   22.958497] RIP: leave_mm+0x39/0x40 RSP: ffffc9000635be48
[   22.964859] ---[ end trace 1426870dcae851dd ]---


To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Kernel Test Robot

View attachment "config-4.12.0-rc2-00061-ge2a7dcc" of type "text/plain" (159381 bytes)

View attachment "job-script" of type "text/plain" (6855 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (17900 bytes)

View attachment "job.yaml" of type "text/plain" (4447 bytes)