2014-09-24 14:31 GMT+04:00 Andrey Wagin <ava...@gmail.com>: > Hi All, > > I execute CRIU tests on linux-next. Today I found that one of tests > hangs up forever. > > [root@linux-next-test linux-next]# git describe HEAD > next-20140922 > [root@linux-next-test ~]# ps axf > ... > 698 ? Ss 0:05 \_ sshd: root@notty > 700 ? Ss 0:00 | \_ bash -x > jenkins-scripts/jenkins-ct.sh jenkins.sh > 706 ? S 0:00 | \_ bash -c ( mount --make-rprivate > / && umount -l /proc && mount -t proc proc /proc/ && bash -x > jenkins.sh) > 707 ? S 0:00 | \_ bash -c ( mount > --make-rprivate / && umount -l /proc && mount -t proc proc /proc/ && > bash -x jenkins.sh) > 711 ? S 0:00 | \_ bash -x jenkins.sh > 2981 ? S 0:05 | \_ bash -x > test/zdtm.sh -C -x .*\(maps01\|maps04\) > 6717 ? S 0:00 | \_ /bin/bash > zdtm/live/static/cgroup00.hook --clean > 6719 ? D 11:13 | \_ mount -t > cgroup none cgclean.cWgK71 -o none,name=zdtmtst > > [root@linux-next-test ~]# cat /proc/6719/stack > [<ffffffff8111fcb7>] msleep+0x37/0x50 > [<ffffffff8114bde2>] cgroup_mount+0x712/0xa50 > [<ffffffff8124d0e9>] mount_fs+0x39/0x1b0 > [<ffffffff8126d76b>] vfs_kern_mount+0x6b/0x150 > [<ffffffff8127075b>] do_mount+0x22b/0xc20 > [<ffffffff81271492>] SyS_mount+0xa2/0x110 > [<ffffffff817e3ba9>] system_call_fastpath+0x12/0x17 > [<ffffffffffffffff>] 0xffffffffffffffff > > Let me know which info do you need for investigation. > > Steps to reproduce: > > git clone https://github.com/xemul/criu.git > cd criu > make > bash test/zdtm.sh static/cgroup00
Steps to reproduce without CRIU: [root@avagin-fc19-cr ~]# mount -t cgroup -o none,name=zdtmtst xxx /mnt/test/ [root@avagin-fc19-cr ~]# mkdir /mnt/test/xxx [root@avagin-fc19-cr ~]# umount /mnt/test/ [root@avagin-fc19-cr ~]# mount -t cgroup -o none,name=zdtmtst xxx /mnt/test/ [1]+ Stopped mount -t cgroup -o none,name=zdtmtst xxx /mnt/test/ [root@avagin-fc19-cr ~]# bg [root@avagin-fc19-cr ~]# cat /proc/633/stack [<ffffffff810e9377>] msleep+0x37/0x50 [<ffffffff811118a2>] cgroup_mount+0x482/0x670 [<ffffffff811e3769>] mount_fs+0x39/0x1b0 [<ffffffff8120157b>] vfs_kern_mount+0x6b/0x150 [<ffffffff8120422b>] do_mount+0x22b/0xc20 [<ffffffff81204f62>] SyS_mount+0xa2/0x110 [<ffffffff816fcc69>] system_call_fastpath+0x12/0x17 [<ffffffffffffffff>] 0xffffffffffffffff > > Thanks, > Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
