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
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https://bugs.launchpad.net/bugs/1788060
Title:
du program crashes on /var/lib
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