Re: [LKP] [xarray] 4e99d4e957: BUG:soft_lockup-CPU##stuck_for#s

[Rong Chen]

On 12/11/2018 10:29 PM, Matthew Wilcox wrote:

On Tue, Dec 11, 2018 at 05:54:41PM +0800, kernel test robot wrote:

# To reproduce,
# 1) save job-script and this script (both are attached in 0day report email)
# 2) run this script with your compiled kernel and optional env 
$INSTALL_MOD_PATH

kernel=$1

initrds=(
        /osimage/yocto/yocto-tiny-i386-2016-04-22.cgz
        /lkp/lkp/lkp-i386.cgz
        
/osimage/deps/debian-x86_64-2016-08-31.cgz/run-ipconfig.i386_2016-09-03.cgz
)

HTTP_PREFIX=https://download.01.org/0day-ci/lkp-qemu
wget --timestamping "${initrds[@]/#/$HTTP_PREFIX}"

{
        cat "${initrds[@]//*\//}"
        [[ $INSTALL_MOD_PATH ]] && (
                cd "$INSTALL_MOD_PATH"


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

When I do this, the only output I get is:

make: Entering directory '/home/willy/kernel/lkp-tests/bin/event'
gcc    -c -o wakeup.o wakeup.c
gcc  -static -o wakeup wakeup.o
rm -f wakeup.o
strip wakeup
make: Leaving directory '/home/willy/kernel/lkp-tests/bin/event'

Running under sh -x, I get as far as:

+ exec /home/willy/kernel/lkp-tests/lkp-exec/qemu -k 
../idrext/.build-yocto/arch/x86/boot/bzImage job-script

Editing that script to set -x, I get to:

+ /home/willy/kernel/lkp-tests/sbin/pack -f -a x86_64 lkp-src
make: Entering directory '/home/willy/kernel/lkp-tests/bin/event'
gcc    -c -o wakeup.o wakeup.c
gcc  -static -o wakeup wakeup.o
rm -f wakeup.o
strip wakeup
make: Leaving directory '/home/willy/kernel/lkp-tests/bin/event'
+ exit

which would seem to indicate your 'pack' command failed with a non-zero
exit code?  Adding set -x to _that_ script gives me:

+ find . -type d -exec chmod g+rwx '{}' ';'
+ chmod -R g+rw etc lib root usr
+ '[' -d /osimage/addon-x86_64 ']'
+ gzip -n -9 /home/willy/.lkp/cache/lkp-x86_64.cpio
+ mv -f /home/willy/.lkp/cache/lkp-x86_64.cpio.gz 
/home/willy/.lkp/cache/lkp-x86_64.cgz
+ [[ -n '' ]]
+ [[ -n '' ]]
+ exit

I'm using your top-of-tree lkp-tests, commit
e28c726dfe85e3e595ba4776a4eb92f2559d3ac0

By the way, I took this kernel config and ran it under one of your other
test cases (the one which runs Trinity) and didn't see a boot problem,
so either it's something specific to this setup, or the problem got
fixed between this commit and current top-of-tree.

Please accept my apologies for taking your time, the reproduce tool was broken 
for a long time, and it's fixed now.
if it can't be reproduced, here is the original 
bzImage(https://download.01.org/0day-ci/lkp-qemu/fbc/4e99d4e9579d3b950bf4b38d0d64eb1b9be78761/).

Best Regards,
Rong Chen