linux-kernel - f7f99cf8bd:

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Message-ID: <20180302121656.gtds7f52cngd5r3w@inn>
Date:   Fri, 2 Mar 2018 20:16:56 +0800
From:   kernel test robot <fengguang.wu@...el.com>
To:     Igor Stoppa <igor.stoppa@...wei.com>
Cc:     mhocko@...nel.org, willy@...radead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Igor Stoppa <igor.stoppa@...wei.com>,
        lkp@...org
Subject: f7f99cf8bd:

FYI, we noticed the following commit (built with gcc-4.9):

commit: f7f99cf8bd76d91678e1d8b012a3df449a5c8558 ("crash vmalloc_to_page()")
url: https://github.com/0day-ci/linux/commits/Igor-Stoppa/mm-crash-in-vmalloc_to_page-misuse-or-bug/20180224-002514
base: git://git.cmpxchg.org/linux-mmotm.git master

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu Nehalem -smp 2 -m 512M

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


+------------------------------------------+------------+------------+
|                                          | 745388a346 | f7f99cf8bd |
+------------------------------------------+------------+------------+
| boot_successes                           | 10         | 0          |
| boot_failures                            | 2          | 11         |
| BUG:workqueue_lockup-pool                | 1          |            |
| WARNING:at_mm/vmalloc.c:#vmalloc_to_page | 1          | 11         |
| RIP:vmalloc_to_page                      | 1          | 11         |
+------------------------------------------+------------+------------+





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-4.16.0-rc2-mm1-00153-gf7f99cf" of type "text/plain" (130487 bytes)

View attachment "job-script" of type "text/plain" (4291 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (14824 bytes)