linux-kernel - [lkp-robot] [asm] c1aad8dcc4: BUG:kernel_hang_in_boot

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Date:   Tue, 16 May 2017 09:19:57 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: [lkp-robot] [asm]  c1aad8dcc4: BUG:kernel_hang_in_boot_stage


FYI, we noticed the following commit:

commit: c1aad8dcc49382399f48541dc47b6e30b0ef1b62 ("asm-generic: zero in __get_user(), not __get_user_fn()")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: trinity
with following parameters:

	runtime: 300s

test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/


on test machine: qemu-system-x86_64 -enable-kvm -smp 2 -m 420M

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


+-----------------------------------------------------------------------+------------+------------+
|                                                                       | 3fb5007528 | c1aad8dcc4 |
+-----------------------------------------------------------------------+------------+------------+
| boot_successes                                                        | 0          | 0          |
| boot_failures                                                         | 13         | 14         |
| page_allocation_failure:order:#,mode:#(__GFP_NORETRY),nodemask=(null) | 9          |            |
| Mem-Info                                                              | 9          |            |
| WARNING:at_kernel/trace/trace.c:#trace_init                           | 9          |            |
| page_allocation_failure:order:#,mode:#(__GFP_NOTRACK),nodemask=(null) | 2          |            |
| Kernel_panic-not_syncing:cannot_initialize_percpu_area(err=-#)        | 4          |            |
| BUG:kernel_hang_in_boot_stage                                         | 0          | 14         |
+-----------------------------------------------------------------------+------------+------------+



[    0.000000] BRK [0x095c5000, 0x095c5fff] PGTABLE
[    0.000000] BRK [0x095c6000, 0x095c6fff] PGTABLE
[    0.000000] BRK [0x095c7000, 0x095c7fff] PGTABLE

Elapsed time: 440
BUG: kernel hang in boot stage

initrds=(
	/osimage/yocto/yocto-tiny-i386-2016-04-22.cgz
	/lkp/scheduled/vm-lkp-nhm-dp1-yocto-ia32-5/trinity-300s-yocto-tiny-i386-2016-04-22.cgz-c1aad8dcc49382399f48541dc47b6e30b0ef1b62-20170515-127570-ve362v-0.cgz
	/lkp/lkp/lkp-i386.cgz


To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong

View attachment "config-4.11.0-rc1-00007-gc1aad8d" of type "text/plain" (141478 bytes)

View attachment "job-script" of type "text/plain" (4023 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (1880 bytes)