Coming back to this years later because I am running into this issue as well, and wanted to provide some additional information:
At this time it seems to be crashing when it attempts to traverse from /var/lib into lxcfs: openat(4, "lxcfs", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 fcntl(3, F_GETFL) = 0x38800 (flags O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW|O_DIRECTORY) fcntl(3, F_SETFD, FD_CLOEXEC) = 0 newfstatat(4, "lxcfs", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 fstatfs(4, {f_type=XFS_SB_MAGIC, f_bsize=4096, f_blocks=1160704, f_bfree=1014059, f_bavail=1014059, f_files=2326528, f_ffree=2321112, f_fsid={val=[64771, 0]}, f_namelen=255, f_frsize=4096, f_flags=ST_VALID|ST_RELATIME}) = 0 fcntl(3, F_DUPFD_CLOEXEC, 3) = 5 getdents(3, /* 4 entries */, 32768) = 104 getdents(3, /* 0 entries */, 32768) = 0 close(3) = 0 newfstatat(5, "proc", {st_mode=S_IFDIR|0555, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 openat(5, "proc", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW|O_CLOEXEC|O_DIRECTORY) = 3 fstat(3, {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0 fcntl(3, F_GETFL) = 0x38800 (flags O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW|O_DIRECTORY) fcntl(3, F_SETFD, FD_CLOEXEC) = 0 rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, ~[RTMIN RT_1], [], 8) = 0 getpid() = 16911 gettid() = 16911 tgkill(16911, 16911, SIGABRT) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 --- SIGABRT {si_signo=SIGABRT, si_code=SI_TKILL, si_pid=16911, si_uid=0} --- +++ killed by SIGABRT (core dumped) +++ Aborted (core dumped) I've attached the file with the crash from /var/crash. sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) proc on /proc type proc (rw,nosuid,nodev,noexec,relatime) udev on /dev type devtmpfs (rw,nosuid,relatime,size=457348k,nr_inodes=114337,mode=755) devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000) tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=97968k,mode=755) /dev/mapper/vg_root-lv_root on / type xfs (rw,relatime,attr2,inode64,noquota) securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime) tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k) tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755) cgroup on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime) cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd) pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio) cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb) cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma) cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=25,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=17576) mqueue on /dev/mqueue type mqueue (rw,relatime) debugfs on /sys/kernel/debug type debugfs (rw,relatime) hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M) sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime) fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime) configfs on /sys/kernel/config type configfs (rw,relatime) /dev/nvme0n1p1 on /boot type ext4 (rw,relatime,data=ordered) /dev/mapper/vg_root-lv_tmp on /tmp type xfs (rw,relatime,attr2,inode64,noquota) /dev/mapper/vg_root-lv_var on /var type xfs (rw,relatime,attr2,inode64,noquota) /dev/mapper/vg_root-lv_home on /home type xfs (rw,relatime,attr2,inode64,noquota) /dev/mapper/vg_root-lv_log on /var/log type xfs (rw,relatime,attr2,inode64,noquota) /dev/mapper/vg_root-lv_audit on /var/log/audit type xfs (rw,relatime,attr2,inode64,noquota) lxcfs on /var/lib/lxcfs type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other) tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=97964k,mode=700,uid=1000,gid=1000) Is a list of mount points, you'll see that lxcfs is on /var/lib/lxcfs ** Attachment added: "The du crash dump" https://bugs.launchpad.net/ubuntu/+source/coreutils/+bug/1788060/+attachment/5541259/+files/_usr_bin_du.0.crash -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to coreutils in Ubuntu. https://bugs.launchpad.net/bugs/1788060 Title: du program crashes on /var/lib Status in coreutils package in Ubuntu: Expired Bug description: We have an Ubuntu 18 installation using xfs file systems user@hostname:~$ df Filesystem 1K-blocks Used Available Use% Mounted on udev 1989640 0 1989640 0% /dev tmpfs 404008 848 403160 1% /run /dev/sda1 9754624 3083376 6671248 32% / tmpfs 2020032 0 2020032 0% /dev/shm tmpfs 5120 0 5120 0% /run/lock tmpfs 2020032 0 2020032 0% /sys/fs/cgroup /dev/sda2 11194368 958336 10236032 9% /var tmpfs 404004 0 404004 0% /run/user/1001 tmpfs 404004 0 404004 0% /run/user/601005952 du aborts when run in /var and /var/lib, but not in any of the subdirectories of /var/lib I tried rebooting with linux ... init=/bin/bash to run xfs_repair on the /var/file system and it found no errors. After the repair command, I mounted /var and ran du again with no errors. However once I rebooted into the full O/S, du aborted again in /var and /var/lib. The du and sudo du both abort, but non-privileged du also dumps core. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: coreutils 8.28-1ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18 Uname: Linux 4.15.0-32-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 Date: Mon Aug 20 15:26:49 2018 InstallationDate: Installed on 2018-06-11 (69 days ago) InstallationMedia: Ubuntu-Server 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/bash SourcePackage: coreutils UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/coreutils/+bug/1788060/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp