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Message-ID: <20190705081403.GG17490@shao2-debian>
Date: Fri, 5 Jul 2019 16:14:03 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: David Sterba <dsterba@...e.com>
Cc: Nikolay Borisov <nborisov@...e.com>,
LKML <linux-kernel@...r.kernel.org>,
Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org
Subject: [btrfs] eb13e6c23d: BUG:kernel_hang_in_test_stage
FYI, we noticed the following commit (built with gcc-7):
commit: eb13e6c23d84e49758a297ca79fd987fb67c0a10 ("btrfs: switch extent_buffer blocking_writers from atomic to int")
https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git master
in testcase: xfstests
with following parameters:
disk: 4HDD
fs: btrfs
test: generic-slow2
test-description: xfstests is a regression test suite for xfs and other files ystems.
test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 2G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+----------------------------------------------------+------------+------------+
| | 06acfbd1b4 | eb13e6c23d |
+----------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 19 | 24 |
| BUG:kernel_reboot-without-warning_in_test_stage | 19 | 12 |
| BUG:kernel_hang_in_boot-around-mounting-root_stage | 0 | 1 |
| BUG:kernel_hang_in_test_stage | 0 | 11 |
+----------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
Stopping System Logging Service...
Stopping Permit User Sessions...
Stopping /etc/rc.local Compatibility...
Stopping LSB: Execute the kexec -e command to reboot system...
Unmounting /inn/result...
BUG: kernel hang in test stage
Elapsed time: 4240
qemu-img create -f qcow2 disk-vm-snb-2G-415-0 256G
qemu-img create -f qcow2 disk-vm-snb-2G-415-1 256G
To reproduce:
# build kernel
cd linux
cp config-5.2.0-rc7-00058-geb13e6c .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
Thanks,
Rong Chen
View attachment "config-5.2.0-rc7-00058-geb13e6c" of type "text/plain" (196397 bytes)
View attachment "job-script" of type "text/plain" (5520 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (16664 bytes)
View attachment "xfstests" of type "text/plain" (796 bytes)
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