linux-kernel - [x86/topology] 05aa90edc7: kernel_BUG_at

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Date:   Tue, 12 Sep 2017 07:46:51 +0800
From:   kernel test robot <fengguang.wu@...el.com>
To:     Andi Kleen <andi@...stfloor.org>
Cc:     x86@...nel.org, prarit@...hat.com, kan.liang@...el.com,
        peterz@...radead.org, linux-kernel@...r.kernel.org,
        Andi Kleen <ak@...ux.intel.com>, lkp@...org
Subject: [x86/topology]  05aa90edc7:
 kernel_BUG_at_arch/x86/kernel/cpu/common.c

FYI, we noticed the following commit:

commit: 05aa90edc7910ec3d1ed791fa77371b3acb9bf08 ("x86/topology: Avoid wasting 128k for package id array")
url: https://github.com/0day-ci/linux/commits/Andi-Kleen/perf-x86-intel-uncore-Cache-logical-pkg-id-in-uncore-driver/20170910-025322


in testcase: pm-qa
with following parameters:

	test: cpuidle



on test machine: qemu-system-x86_64 -enable-kvm -cpu kvm64,+ssse3 -smp 2 -m 8G

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


+--------------------------------------------+------------+------------+
|                                            | b62bc52ffc | 05aa90edc7 |
+--------------------------------------------+------------+------------+
| boot_successes                             | 0          | 0          |
| boot_failures                              | 0          | 36         |
| invalid_opcode:#[##]                       | 0          | 32         |
| kernel_BUG_at_arch                         | 0          | 3          |
| Kernel_panic-not_syncing:Fatal_exception   | 0          | 26         |
| kernel_BUG_at_arch/x86/kernel/cpu/common.c | 0          | 9          |
| Kernel_panic-not_syncing:Fatal_exc         | 0          | 2          |
| Kernel_panic-not_syncing:Fatal_exceptf810  | 0          | 1          |
+--------------------------------------------+------------+------------+



[  277.992221] kernel BUG at arch/x86/kernel/cpu/common.c:1061!
[  277.993885] invalid opcode: 0000 [#1] SMP
[  277.994707] Modules linked in:
[  277.995237] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.13.0-00002-g05aa90ed #26
[  277.996567] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[  277.998765] task: ffff9b2555034300 task.stack: ffffabde018f0000
[  278.000063] RIP: 0010:identify_secondary_cpu+0x6a/0x71
[  278.001055] RSP: 0000:ffffabde018f3f10 EFLAGS: 00010086
[  278.001699] RAX: 00000000ffffffe4 RBX: ffff9b255f40a100 RCX: 0000000000000007
[  278.002621] RDX: 0000000000000000 RSI: ffffffff8c13baf7 RDI: ffff9b255f5ce040
[  278.003674] RBP: ffffabde018f3f20 R08: 00000049c6d945a5 R09: 0000000000000001
[  278.005029] R10: 0000000000000000 R11: ffffffff90a8af67 R12: 0000000000000001
[  278.006221] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[  278.007529] FS:  0000000000000000(0000) GS:ffff9b255f400000(0000) knlGS:0000000000000000
[  278.009384] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  278.010798] CR2: 0000000000000000 CR3: 00000001b222c000 CR4: 00000000000006e0
[  278.012134] Call Trace:
[  278.012458]  smp_store_cpu_info+0x3e/0x40
[  278.013008]  start_secondary+0x2f/0xe5
[  278.013538]  secondary_startup_64+0x9f/0x9f
[  278.014083] Code: 0f b7 8b d4 00 00 00 89 c2 44 89 e6 48 c7 c7 19 1f c3 8e e8 55 7c 0b 00 0f b7 bb da 00 00 00 44 89 e6 e8 f9 df 00 00 85 c0 74 02 <0f> 0b 5b 41 5c 5d c3 55 48 89 e5 41 54 53 80 7f 01 08 48 89 fb 
[  278.017392] RIP: identify_secondary_cpu+0x6a/0x71 RSP: ffffabde018f3f10
[  278.018303] ---[ end trace 791e5b1aeb0d5a6c ]---


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,
lkp

View attachment "config-4.13.0-00002-g05aa90ed" of type "text/plain" (161838 bytes)

View attachment "job-script" of type "text/plain" (4186 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (29540 bytes)