| #! /bin/bash |
| |
| ################################################################################ |
| ## ## |
| ## Copyright (c) 2009 FUJITSU LIMITED ## |
| ## ## |
| ## This program is free software; you can redistribute it and#or modify ## |
| ## it under the terms of the GNU General Public License as published by ## |
| ## the Free Software Foundation; either version 2 of the License, or ## |
| ## (at your option) any later version. ## |
| ## ## |
| ## This program is distributed in the hope that it will be useful, but ## |
| ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ## |
| ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ## |
| ## for more details. ## |
| ## ## |
| ## You should have received a copy of the GNU General Public License ## |
| ## along with this program; if not, write to the Free Software ## |
| ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ## |
| ## ## |
| ## Author: Li Zefan <lizf@cn.fujitsu.com> ## |
| ## ## |
| ################################################################################ |
| |
| cd $LTPROOT/testcases/bin |
| |
| export TCID="cgroup_regression_test" |
| export TST_TOTAL=10 |
| export TST_COUNT=1 |
| |
| failed=0 |
| |
| tst_kvercmp 2 6 29 |
| if [ $? -eq 0 ]; then |
| tst_brkm TCONF ignored "test must be run with kernel 2.6.29 or newer" |
| exit 0 |
| elif [ ! -f /proc/cgroups ]; then |
| tst_brkm TCONF ignored "Kernel does not support for control groups; skipping testcases"; |
| exit 0 |
| elif [ "x$(id -ru)" != x0 ]; then |
| tst_brkm TCONF ignored "Test must be run as root" |
| exit 0 |
| fi |
| |
| dmesg -c > /dev/null |
| nr_bug=`dmesg | grep -c "kernel BUG"` |
| nr_null=`dmesg | grep -c "kernel NULL pointer dereference"` |
| nr_warning=`dmesg | grep -c "^WARNING"` |
| nr_lockdep=`dmesg | grep -c "possible recursive locking detected"` |
| |
| # check_kernel_bug - check if some kind of kernel bug happened |
| check_kernel_bug() |
| { |
| new_bug=`dmesg | grep -c "kernel BUG"` |
| new_null=`dmesg | grep -c "kernel NULL pointer dereference"` |
| new_warning=`dmesg | grep -c "^WARNING"` |
| new_lockdep=`dmesg | grep -c "possible recursive locking detected"` |
| |
| # no kernel bug is detected |
| if [ $new_bug -eq $nr_bug -a $new_warning -eq $nr_warning -a \ |
| $new_null -eq $nr_null -a $new_lockdep -eq $nr_lockdep ]; then |
| return 1 |
| fi |
| |
| # some kernel bug is detected |
| if [ $new_bug -gt $nr_bug ]; then |
| tst_resm TFAIL "kernel BUG was detected!" |
| fi |
| if [ $new_warning -gt $nr_warning ]; then |
| tst_resm TFAIL "kernel WARNING was detected!" |
| fi |
| if [ $new_null -gt $nr_null ]; then |
| tst_resm TFAIL "kernel NULL pointer dereference!" |
| fi |
| if [ $new_lockdep -gt $nr_lockdep ]; then |
| tst_resm TFAIL "kernel lockdep warning was detected!" |
| fi |
| |
| nr_bug=$new_bug |
| nr_null=$new_null |
| nr_warning=$new_warning |
| nr_lockdep=$new_lockdep |
| |
| echo "check_kernel_bug found something!" |
| dmesg |
| failed=1 |
| return 0 |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: There was a race when keeping forking processes and at the same |
| # time cat /cgroup/tasks (should be the very first time to read |
| # /cgroup/tasks, otherwise this bug won't be triggered) |
| # Kernel: 2.6.24, 2.6.25-rcX |
| # Links: http://lkml.org/lkml/2007/10/17/224 |
| # http://lkml.org/lkml/2008/3/5/332 |
| # http://lkml.org/lkml/2008/4/16/493 |
| # Fix: commit 0e04388f0189fa1f6812a8e1cb6172136eada87e |
| #--------------------------------------------------------------------------- |
| test_1() |
| { |
| ./fork_processes & |
| sleep 1 |
| |
| mount -t cgroup -o none,name=foo cgroup cgroup/ |
| if [ $? -ne 0 ]; then |
| tst_resm TFAIL "failed to mount cgroup filesystem" |
| failed=1 |
| /bin/kill -SIGTERM $! |
| return |
| fi |
| cat cgroup/tasks > /dev/null |
| |
| check_kernel_bug |
| if [ $? -eq 1 ]; then |
| tst_resm TPASS "no kernel bug was found" |
| fi |
| |
| /bin/kill -SIGTERM $! |
| wait $! |
| umount cgroup/ |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: a cgroup's notify_on_release flag did not inherit from its parent. |
| # Kernel: 2.6.24-rcX |
| # Links: http://lkml.org/lkml/2008/2/25/12 |
| # Fix: commit bc231d2a048010d5e0b49ac7fddbfa822fc41109 |
| #--------------------------------------------------------------------------- |
| test_2() |
| { |
| mount -t cgroup -o none,name=foo cgroup cgroup/ |
| if [ $? -ne 0 ]; then |
| tst_resm TFAIL "Failed to mount cgroup filesystem" |
| failed=1 |
| return 1 |
| fi |
| |
| echo 0 > cgroup/notify_on_release |
| mkdir cgroup/0 |
| val1=`cat cgroup/0/notify_on_release` |
| |
| echo 1 > cgroup/notify_on_release |
| mkdir cgroup/1 |
| val2=`cat cgroup/1/notify_on_release` |
| |
| if [ $val1 -ne 0 -o $val2 -ne 1 ]; then |
| tst_resm TFAIL "wrong notify_on_release value" |
| failed=1 |
| else |
| tst_resm TPASS "notify_on_release is inherited" |
| fi |
| |
| rmdir cgroup/0 cgroup/1 |
| umount cgroup/ |
| |
| return $failed |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: Accessing NULL cgrp->dentry when reading /proc/sched_debug |
| # Kernel: 2.6.26-2.6.28 |
| # Links: http://lkml.org/lkml/2008/10/30/44 |
| # http://lkml.org/lkml/2008/12/12/107 |
| # http://lkml.org/lkml/2008/12/16/481 |
| # Fix: commit a47295e6bc42ad35f9c15ac66f598aa24debd4e2 |
| #--------------------------------------------------------------------------- |
| test_3() |
| { |
| if [ ! -e /proc/sched_debug ]; then |
| tst_resm TCONF "CONFIG_SCHED_DEBUG is not enabled" |
| return |
| fi |
| |
| grep -q -w "cpu" /proc/cgroups |
| if [ $? -ne 0 ]; then |
| tst_resm TCONF "CONFIG_CGROUP_SCHED is not enabled" |
| return |
| fi |
| |
| # Run the test for 30 secs |
| mount -t cgroup -o cpu xxx cgroup/ |
| if [ $? -ne 0 ]; then |
| tst_resm TFAIL "Failed to mount cpu subsys" |
| failed=1 |
| return |
| fi |
| |
| ./test_3_1.sh & |
| pid1=$! |
| ./test_3_2.sh & |
| pid2=$! |
| |
| sleep 30 |
| /bin/kill -SIGUSR1 $pid1 $pid2 |
| wait $pid1 |
| wait $pid2 |
| |
| check_kernel_bug |
| if [ $? -eq 1 ]; then |
| tst_resm TPASS "no kernel bug was found" |
| fi |
| |
| rmdir cgroup/* 2> /dev/null |
| umount cgroup/ |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: cgroup hierarchy lock's lockdep subclass may overflow |
| # Kernel: 2.6.29-rcX |
| # Link: http://lkml.org/lkml/2009/2/4/67 |
| # Fix: |
| #--------------------------------------------------------------------------- |
| test_4() |
| { |
| if [ ! -e /proc/lockdep ]; then |
| tst_resm TCONF "CONFIG_LOCKDEP is not enabled" |
| return |
| fi |
| |
| # MAX_LOCKDEP_SUBCLASSES is 8, so number of subsys should be > 8 |
| lines=`cat /proc/cgroups | wc -l` |
| if [ $lines -le 9 ]; then |
| tst_resm TCONF "require more than 8 cgroup subsystems" |
| return |
| fi |
| |
| mount -t cgroup -o none,name=foo cgroup cgroup/ |
| mkdir cgroup/0 |
| rmdir cgroup/0 |
| umount cgroup/ |
| |
| dmesg | grep -q "MAX_LOCKDEP_SUBCLASSES too low" |
| if [ $? -eq 0 ]; then |
| tst_resm TFAIL "lockdep BUG was found" |
| failed=1 |
| return |
| else |
| tst_resm TPASS "no lockdep BUG was found" |
| fi |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: When mount cgroup fs and the fs was busy, root_count should not be |
| # decremented in cgroup_kill_sb() |
| # Kernel: 2.6.29-rcX |
| # Links: https://openvz.org/pipermail/devel/2009-January/016345.html |
| # http://lkml.org/lkml/2009/1/28/190 |
| # Fix: commit 839ec5452ebfd5905b9c69b20ceb640903a8ea1a |
| #--------------------------------------------------------------------------- |
| test_5() |
| { |
| lines=`cat /proc/cgroups | wc -l` |
| if [ $lines -le 2 ]; then |
| tst_resm TCONF "require at least 2 cgroup subsystems" |
| return |
| fi |
| |
| subsys1=`tail -n 1 /proc/cgroups | awk '{ print $1 }'` |
| subsys2=`tail -n 2 /proc/cgroups | head -1 | awk '{ print $1 }'` |
| |
| mount -t cgroup -o $subsys1,$subsys2 xxx cgroup/ |
| if [ $? -ne 0 ]; then |
| tst_resm TFAIL "mount $subsys1 and $subsys2 failed" |
| failed=1 |
| return |
| fi |
| |
| # This 2nd mount should fail |
| mount -t cgroup -o $subsys1 xxx cgroup/ 2> /dev/null |
| if [ $? -eq 0 ]; then |
| tst_resm TFAIL "mount $subsys1 should fail" |
| umount cgroup/ |
| failed=1 |
| return |
| fi |
| |
| mkdir cgroup/0 |
| # Otherwise we can't attach task |
| if [ "$subsys1" == cpuset -o "$subsys2" == cpuset ]; then |
| echo 0 > cgroup/0/cpuset.cpus 2> /dev/null |
| echo 0 > cgroup/0/cpuset.mems 2> /dev/null |
| fi |
| |
| sleep 100 & |
| echo $! > cgroup/0/tasks |
| |
| check_kernel_bug |
| if [ $? -eq 1 ]; then |
| tst_resm TPASS "no kernel bug was found" |
| fi |
| |
| # clean up |
| /bin/kill -SIGTERM $! > /dev/null |
| wait $! |
| rmdir cgroup/0 |
| umount cgroup/ |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: There was a race between cgroup_clone and umount |
| # Kernel: 2.6.24 - 2.6.28, 2.6.29-rcX |
| # Links: http://lkml.org/lkml/2008/12/24/124 |
| # Fix: commit 7b574b7b0124ed344911f5d581e9bc2d83bbeb19 |
| #--------------------------------------------------------------------------- |
| test_6() |
| { |
| grep -q -w "ns" /proc/cgroups |
| if [ $? -ne 0 ]; then |
| tst_resm TCONF "CONFIG_CGROUP_NS" |
| return |
| fi |
| |
| # run the test for 30 secs |
| ./test_6_1.sh & |
| pid1=$! |
| ./test_6_2 & |
| pid2=$! |
| |
| sleep 30 |
| /bin/kill -SIGUSR1 $pid1 |
| /bin/kill -SIGTERM $pid2 |
| wait $pid1 |
| wait $pid2 |
| |
| check_kernel_bug |
| if [ $? -eq 1 ]; then |
| tst_resm TPASS "no kernel bug was found" |
| fi |
| |
| # clean up |
| mount -t cgroup -o ns xxx cgroup/ > /dev/null 2>&1 |
| rmdir cgroup/[1-9]* > /dev/null 2>&1 |
| umount cgroup/ |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: There was a bug when remount cgroup fs with some dead subdirs in |
| # it (rmdir()ed but still has some refcnts on it). It caused memory |
| # leak, and may cause oops when cat /proc/sched_debug. |
| # Kernel: 2.6.24 - 2.6.27, 2.6.28-rcX |
| # Links: http://lkml.org/lkml/2008/12/10/369 |
| # Fix: commit 307257cf475aac25db30b669987f13d90c934e3a |
| #--------------------------------------------------------------------------- |
| test_7_1() |
| { |
| mount -t cgroup -o $subsys xxx cgroup/ |
| if [ $? -ne 0 ]; then |
| tst_resm TFAIL "failed to mount $subsys" |
| failed=1 |
| return |
| fi |
| |
| mkdir cgroup/0 |
| sleep 100 < cgroup/0 & # add refcnt to this dir |
| rmdir cgroup/0 |
| |
| # remount with new subsystems added |
| # since 2.6.28, this remount will fail |
| mount -t cgroup -o remount xxx cgroup/ 2> /dev/null |
| /bin/kill -SIGTERM $! |
| wait $! |
| umount cgroup/ |
| } |
| |
| test_7_2() |
| { |
| mount -t cgroup -o none,name=foo cgroup cgroup/ |
| if [ $? -ne 0 ]; then |
| tst_resm TFAIL "failed to mount cgroup" |
| failed=1 |
| return |
| fi |
| |
| mkdir cgroup/0 |
| sleep 100 < cgroup/0 & # add refcnt to this dir |
| rmdir cgroup/0 |
| |
| # remount with some subsystems removed |
| # since 2.6.28, this remount will fail |
| mount -t cgroup -o remount,$subsys xxx cgroup/ 2> /dev/null |
| /bin/kill -SIGTERM $! |
| wait $! |
| umount cgroup/ |
| |
| # due to the bug, reading /proc/sched_debug may lead to oops |
| grep -q -w "cpu" /proc/cgroups |
| if [ $? -ne 0 -o ! -e /proc/sched_debug ]; then |
| return |
| fi |
| |
| tmp=0 |
| while [ $tmp -lt 50 ] ; do |
| echo 3 > /proc/sys/vm/drop_caches |
| cat /proc/sched_debug > /dev/null |
| : $(( tmp += 1 )) |
| done |
| } |
| |
| test_7() |
| { |
| lines=`cat /proc/cgroups | wc -l` |
| if [ $lines -le 2 ]; then |
| tst_resm TCONF "require at least 2 cgroup subsystems" |
| slt_result $SLT_Untested |
| return |
| fi |
| |
| subsys=`tail -n 1 /proc/cgroups | awk '{ print $1 }'` |
| |
| # remount to add new subsystems to the hierarchy |
| i=1 |
| while [ $i -le 2 ] ; do |
| test_7_$i |
| if [ $? -ne 0 ]; then |
| return |
| fi |
| |
| check_kernel_bug |
| if [ $? -eq 0 ]; then |
| return |
| fi |
| : $(( i += 1 )) |
| done |
| |
| tst_resm TPASS "no kernel bug was found" |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: oops when get cgroupstat of a cgroup control file |
| # Kernel: 2.6.24 - 2.6.27, 2.6.28-rcX |
| # Links: http://lkml.org/lkml/2008/11/19/53 |
| # Fix: commit 33d283bef23132c48195eafc21449f8ba88fce6b |
| #--------------------------------------------------------------------------- |
| test_8() |
| { |
| mount -t cgroup -o none,name=foo cgroup cgroup/ |
| if [ $? -ne 0 ]; then |
| tst_resm TFAIL "failed to mount cgroup filesystem" |
| failed=1 |
| return |
| fi |
| |
| ./getdelays -C cgroup/tasks > /dev/null 2>&1 |
| if [ $? -eq 0 ]; then |
| tst_resm TFAIL "should have failed to get cgroupstat of tasks file" |
| umount cgroup/ |
| failed=1 |
| return |
| fi |
| |
| check_kernel_bug |
| if [ $? -eq 1 ]; then |
| tst_resm TPASS "no kernel bug was found" |
| fi |
| |
| umount cgroup/ |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: When running 2 concurrent mount/umount threads, lockdep warning |
| # may be triggered, it's a false positive, and it's VFS' issue but |
| # not cgroup. |
| # Kernel: 2.6.24 - 2.6.29-rcX |
| # Links: http://lkml.org/lkml/2009/1/4/352 |
| # Fix: commit ada723dcd681e2dffd7d73345cc8fda0eb0df9bd |
| #--------------------------------------------------------------------------- |
| test_9() |
| { |
| ./test_9_1.sh & |
| pid1=$! |
| ./test_9_2.sh & |
| pid2=$! |
| |
| sleep 30 |
| /bin/kill -SIGUSR1 $pid1 $pid2 |
| wait $pid1 |
| wait $pid2 |
| |
| umount cgroup/ 2> /dev/null |
| |
| check_kernel_bug |
| if [ $? -eq 1 ]; then |
| tst_resm TPASS "no kernel warning was found" |
| fi |
| } |
| |
| #--------------------------------------------------------------------------- |
| # Bug: When running 2 concurrent mount/umount threads, kernel WARNING |
| # may be triggered, but it's VFS' issue but not cgroup. |
| # Kernel: 2.6.24 - 2.6.29-rcX |
| # Links: http://lkml.org/lkml/2009/1/4/354 |
| # Fix: commit 1a88b5364b535edaa321d70a566e358390ff0872 |
| #--------------------------------------------------------------------------- |
| test_10() |
| { |
| ./test_10_1.sh & |
| pid1=$! |
| ./test_10_2.sh & |
| pid2=$! |
| |
| sleep 30 |
| /bin/kill -SIGUSR1 $pid1 $pid2 |
| wait $pid1 |
| wait $pid2 |
| |
| mount -t cgroup none cgroup 2> /dev/null |
| rmdir cgroup/0 |
| umount cgroup/ |
| |
| check_kernel_bug |
| if [ $? -eq 1 ]; then |
| tst_resm TPASS "no kernel warning was found" |
| fi |
| } |
| |
| # main |
| |
| mkdir cgroup/ |
| |
| for ((cur = 1; cur <= $TST_TOTAL; cur++)) |
| { |
| export TST_COUNT=$cur |
| |
| test_$cur |
| } |
| |
| find cgroup/ -maxdepth 1 -depth -exec rmdir {} + |
| |
| exit $failed |