linux-kernel - [x86/boot] 39c7962093: BUG:kernel_hang_in_early-boot_stage,last_printk:Decompressing_Linux...Parsing

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Date:   Sat, 11 Mar 2017 22:26:50 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...capital.net>, lkp@...org
Subject: [x86/boot]  39c7962093:
 BUG:kernel_hang_in_early-boot_stage,last_printk:Decompressing_Linux...Parsing_ELF

FYI, we noticed the following commit:

commit: 39c79620934c172758aa52f400a12392e5c023a4 ("x86/boot: Clear BSS-like regions in the kernel ELF parser")
https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git rodata

in testcase: boot

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

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

+-----------------------------------------------------------------------------------+------------+------------+
|                                                                                   | 114daf036f | 39c7962093 |
+-----------------------------------------------------------------------------------+------------+------------+
| boot_successes                                                                    | 7          | 0          |
| boot_failures                                                                     | 0          | 8          |
| BUG:kernel_hang_in_early-boot_stage,last_printk:Decompressing_Linux...Parsing_ELF | 0          | 8          |
+-----------------------------------------------------------------------------------+------------+------------+

output_len: 0x01e5e9c0
kernel_total_size: 0x02b76000

Decompressing Linux... Parsing ELF... 
Elapsed time: 410
BUG: kernel hang in early-boot stage, last printk: Decompressing Linux... Parsing ELF...
Linux version 4.11.0-rc1-00004-g39c7962 #303
Command line: ip=::::vm-lkp-nhm-dp2-yocto-ia32-7::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-nhm-dp2-yocto-ia32-7/boot-1-yocto-tiny-i386-2016-04-22.cgz-39c79620934c172758aa52f400a12392e5c023a4-20170311-101067-1h2se95-0.yaml ARCH=i386 kconfig=i386-randconfig-i1-201710 branch=linux-devel/devel-catchup-201703111121 commit=39c79620934c172758aa52f400a12392e5c023a4 BOOT_IMAGE=/pkg/linux/i386-randconfig-i1-201710/gcc-4.8/39c79620934c172758aa52f400a12392e5c023a4/vmlinuz-4.11.0-rc1-00004-g39c7962 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-nhm-dp2-yocto-ia32/yocto-tiny-i386-2016-04-22.cgz/i386-randconfig-i1-201710/gcc-4.8/39c79620934c172758aa52f400a12392e5c023a4/0 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 net.ifnames=0 printk.devkmsg=on panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 drbd.minor_count=8 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw drbd.minor_count=8

initrds=(
	/osimage/yocto/yocto-tiny-i386-2016-04-22.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,
Kernel Test Robot

View attachment "config-4.11.0-rc1-00004-g39c7962" of type "text/plain" (144485 bytes)

View attachment "job-script" of type "text/plain" (4050 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (1280 bytes)