Initial analysis seems to indicate that this is happening due to a patch
added in the last update which is related to this commit:
https://github.com/shadow-
maint/shadow/commit/f3bdb28e57e5e38c1e89347976c7d61a181eec32. Checking
the manual for fchmodat in focal, it is possible to see the following:

AT_SYMLINK_NOFOLLOW
       If pathname is a symbolic link, do not dereference it: instead operate 
on the link itself.  This flag is not currently implemented.

The flags seems to not be currently implemented.

No further changes to the code have been made by upstream.

More investigation will be made and the last update will possibly be
reverted.

** Changed in: shadow (Ubuntu)
     Assignee: (unassigned) => Camila Camargo de Matos (ccdm94)

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https://bugs.launchpad.net/bugs/1998169

Title:
  useradd command does not copy all of /etc/skel

Status in shadow package in Ubuntu:
  Confirmed

Bug description:
  ====================================================
  I know the useradd command is discouraged, but I wanted to report the bug to 
make the maintainers of the package aware.

  Recently there was an update of Ubuntu's passwd package which is
  sourced from shadow from version 4.8.1-1ubuntu5.20.04.2 to version
  4.8.1-1ubuntu5.20.04.3

  When using the useradd command, the /etc/skel directory with contents
  below, an only copies in one empty folder.

  ====================================================
  ls -lah /etc/skel
  total 60K
  drwxrwxrwx  10 root user 4.0K Nov 28 18:33 .
  drwxr-xr-x 155 root root  12K Nov 28 19:12 ..
  drwxrwxrwx   2 root user 4.0K Nov 28 18:23 .backgrounds
  -rwxrwxrwx   1 root user  220 Nov 28 18:23 .bash_logout
  -rwxrwxrwx   1 root user 3.7K Nov 28 18:23 .bashrc
  drwxrwxrwx   6 root user 4.0K Nov 28 18:23 .config
  drwxrwxrwx   3 root user 4.0K Nov 28 18:23 Desktop
  drwxrwxrwx   2 root user 4.0K Nov 28 18:30 .fonts_stuff
  drwxrwxrwx   2 root user 4.0K Nov 28 18:23 .icons
  -rwxrwxrwx   1 root user  765 Nov 28 18:23 .profile
  drwxrwxrwx   2 root root 4.0K Nov 28 18:32 testfolderempty
  drwxrwxrwx   3 root user 4.0K Nov 28 18:23 .themes
  drwxrwxrwx  14 root user 4.0K Nov 28 18:23 WinAte
  ====================================================
  ls -lah /home/user20
  total 12K
  drwx------  3 user20 user 4.0K Nov 28 19:12 .
  drwxr-xr-x 18 root   root 4.0K Nov 28 19:12 ..
  drwx------  2 user20 user 4.0K Nov 28 19:12 WinAte

  ls -lah /home/user20/WinAte/
  total 8.0K
  drwx------ 2 user20 user 4.0K Nov 28 19:12 .
  drwx------ 3 user20 user 4.0K Nov 28 19:12 ..

  ====================================================
  I noticed in the strace calls for useradd that the kernel is returning the 
correct count of directories, but the useradd is clearly not copying all of 
them. Below is the strace output.
  ====================================================

  strace useradd -k /etc/skel -g 900 -m -s /bin/bash -p a_password -c User20 
user20
  execve("/usr/sbin/useradd", ["useradd", "-k", "/etc/skel", "-g", "900", "-m", 
"-s", "/bin/bash", "-p", "P@ssw0rd!", "-c", "User20", "user20"], 0x7fffe10eba10 
/* 24 vars */) = 0
  brk(NULL)                               = 0x5631ba1c2000
  arch_prctl(0x3001 /* ARCH_??? */, 0x7fff0e47bab0) = -1 EINVAL (Invalid 
argument)
  access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or 
directory)
  openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
  fstat(3, {st_mode=S_IFREG|0644, st_size=98383, ...}) = 0
  mmap(NULL, 98383, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fea9b7bf000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libaudit.so.1", O_RDONLY|O_CLOEXEC) = 
3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\3407\0\0\0\0\0\0"..., 
832) = 832
  fstat(3, {st_mode=S_IFREG|0644, st_size=133200, ...}) = 0
  mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x7fea9b7bd000
  mmap(NULL, 176296, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0x7fea9b791000
  mprotect(0x7fea9b794000, 118784, PROT_NONE) = 0
  mmap(0x7fea9b794000, 32768, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fea9b794000
  mmap(0x7fea9b79c000, 81920, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 
3, 0xb000) = 0x7fea9b79c000
  mmap(0x7fea9b7b1000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1f000) = 0x7fea9b7b1000
  mmap(0x7fea9b7b3000, 37032, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fea9b7b3000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libselinux.so.1", O_RDONLY|O_CLOEXEC) 
= 3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@p\0\0\0\0\0\0"..., 
832) = 832
  fstat(3, {st_mode=S_IFREG|0644, st_size=163200, ...}) = 0
  mmap(NULL, 174600, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0x7fea9b766000
  mprotect(0x7fea9b76c000, 135168, PROT_NONE) = 0
  mmap(0x7fea9b76c000, 102400, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7fea9b76c000
  mmap(0x7fea9b785000, 28672, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 
3, 0x1f000) = 0x7fea9b785000
  mmap(0x7fea9b78d000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7fea9b78d000
  mmap(0x7fea9b78f000, 6664, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fea9b78f000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libsemanage.so.1", 
O_RDONLY|O_CLOEXEC) = 3
  read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\364\0\0\0\0\0\0"..., 832) = 
832
  fstat(3, {st_mode=S_IFREG|0644, st_size=268920, ...}) = 0
  mmap(NULL, 271912, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0x7fea9b723000
  mmap(0x7fea9b730000, 143360, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xd000) = 0x7fea9b730000
  mmap(0x7fea9b753000, 65536, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 
3, 0x30000) = 0x7fea9b753000
  mmap(0x7fea9b763000, 12288, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3f000) = 0x7fea9b763000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
  read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300A\2\0\0\0\0\0"..., 
832) = 832
  pread64(3, 
"\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 
784
  pread64(3, 
"\4\0\0\0\20\0\0\0\5\0\0\0GNU\0\2\0\0\300\4\0\0\0\3\0\0\0\0\0\0\0", 32, 848) = 
32
  pread64(3, 
"\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\30x\346\264ur\f|Q\226\236i\253-'o"..., 68, 880) 
= 68
  fstat(3, {st_mode=S_IFREG|0755, st_size=2029592, ...}) = 0
  pread64(3, 
"\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 
784
  pread64(3, 
"\4\0\0\0\20\0\0\0\5\0\0\0GNU\0\2\0\0\300\4\0\0\0\3\0\0\0\0\0\0\0", 32, 848) = 
32
  pread64(3, 
"\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\30x\346\264ur\f|Q\226\236i\253-'o"..., 68, 880) 
= 68
  mmap(NULL, 2037344, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0x7fea9b531000
  mmap(0x7fea9b553000, 1540096, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7fea9b553000
  mmap(0x7fea9b6cb000, 319488, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 
3, 0x19a000) = 0x7fea9b6cb000
  mmap(0x7fea9b719000, 24576, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1e7000) = 0x7fea9b719000
  mmap(0x7fea9b71f000, 13920, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fea9b71f000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libcap-ng.so.0", O_RDONLY|O_CLOEXEC) 
= 3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220$\0\0\0\0\0\0"..., 
832) = 832
  fstat(3, {st_mode=S_IFREG|0644, st_size=27064, ...}) = 0
  mmap(NULL, 28984, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea9b529000
  mmap(0x7fea9b52b000, 12288, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fea9b52b000
  mmap(0x7fea9b52e000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 
0x5000) = 0x7fea9b52e000
  mmap(0x7fea9b52f000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5000) = 0x7fea9b52f000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libpcre2-8.so.0", O_RDONLY|O_CLOEXEC) 
= 3
  read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\"\0\0\0\0\0\0"..., 832) = 
832
  fstat(3, {st_mode=S_IFREG|0644, st_size=588488, ...}) = 0
  mmap(NULL, 590632, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0x7fea9b498000
  mmap(0x7fea9b49a000, 413696, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fea9b49a000
  mmap(0x7fea9b4ff000, 163840, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 
3, 0x67000) = 0x7fea9b4ff000
  mmap(0x7fea9b527000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8e000) = 0x7fea9b527000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 \22\0\0\0\0\0\0"..., 
832) = 832
  fstat(3, {st_mode=S_IFREG|0644, st_size=18848, ...}) = 0
  mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x7fea9b496000
  mmap(NULL, 20752, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea9b490000
  mmap(0x7fea9b491000, 8192, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7fea9b491000
  mmap(0x7fea9b493000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 
0x3000) = 0x7fea9b493000
  mmap(0x7fea9b494000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fea9b494000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libsepol.so.1", O_RDONLY|O_CLOEXEC) = 
3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300w\0\0\0\0\0\0"..., 
832) = 832
  fstat(3, {st_mode=S_IFREG|0644, st_size=713192, ...}) = 0
  mmap(NULL, 722536, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0x7fea9b3df000
  mprotect(0x7fea9b3e6000, 679936, PROT_NONE) = 0
  mmap(0x7fea9b3e6000, 507904, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7fea9b3e6000
  mmap(0x7fea9b462000, 167936, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 
3, 0x83000) = 0x7fea9b462000
  mmap(0x7fea9b48c000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xac000) = 0x7fea9b48c000
  mmap(0x7fea9b48e000, 5736, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fea9b48e000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libbz2.so.1.0", O_RDONLY|O_CLOEXEC) = 
3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@\"\0\0\0\0\0\0"..., 
832) = 832
  fstat(3, {st_mode=S_IFREG|0644, st_size=74848, ...}) = 0
  mmap(NULL, 76840, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fea9b3cc000
  mmap(0x7fea9b3ce000, 53248, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fea9b3ce000
  mmap(0x7fea9b3db000, 8192, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 
0xf000) = 0x7fea9b3db000
  mmap(0x7fea9b3dd000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10000) = 0x7fea9b3dd000
  close(3)                                = 0
  openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libpthread.so.0", O_RDONLY|O_CLOEXEC) 
= 3
  read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220q\0\0\0\0\0\0"..., 
832) = 832
  pread64(3, 
"\4\0\0\0\24\0\0\0\3\0\0\0GNU\0{E6\364\34\332\245\210\204\10\350-\0106\343="...,
 68, 824) = 68
  fstat(3, {st_mode=S_IFREG|0755, st_size=157224, ...}) = 0
  pread64(3, 
"\4\0\0\0\24\0\0\0\3\0\0\0GNU\0{E6\364\34\332\245\210\204\10\350-\0106\343="...,
 68, 824) = 68
  mmap(NULL, 140408, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0x7fea9b3a9000
  mmap(0x7fea9b3af000, 69632, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7fea9b3af000
  mmap(0x7fea9b3c0000, 24576, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 
3, 0x17000) = 0x7fea9b3c0000
  mmap(0x7fea9b3c6000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c000) = 0x7fea9b3c6000
  mmap(0x7fea9b3c8000, 13432, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fea9b3c8000
  close(3)                                = 0
  mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x7fea9b3a7000
  arch_prctl(ARCH_SET_FS, 0x7fea9b3a8280) = 0
  mprotect(0x7fea9b719000, 16384, PROT_READ) = 0
  mprotect(0x7fea9b3c6000, 4096, PROT_READ) = 0
  mprotect(0x7fea9b3dd000, 4096, PROT_READ) = 0
  mprotect(0x7fea9b48c000, 4096, PROT_READ) = 0
  mprotect(0x7fea9b494000, 4096, PROT_READ) = 0
  mprotect(0x7fea9b527000, 4096, PROT_READ) = 0
  mprotect(0x7fea9b52f000, 4096, PROT_READ) = 0
  mprotect(0x7fea9b7b1000, 4096, PROT_READ) = 0
  mprotect(0x7fea9b78d000, 4096, PROT_READ) = 0
  mprotect(0x7fea9b763000, 4096, PROT_READ) = 0
  mprotect(0x5631b85c0000, 8192, PROT_READ) = 0
  mprotect(0x7fea9b805000, 4096, PROT_READ) = 0
  munmap(0x7fea9b7bf000, 98383)           = 0
  set_tid_address(0x7fea9b3a8550)         = 49452
  set_robust_list(0x7fea9b3a8560, 24)     = 0
  rt_sigaction(SIGRTMIN, {sa_handler=0x7fea9b3afbf0, sa_mask=[], 
sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fea9b3bd420}, NULL, 8) = 0
  rt_sigaction(SIGRT_1, {sa_handler=0x7fea9b3afc90, sa_mask=[], 
sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fea9b3bd420}, NULL, 
8) = 0
  rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
  prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, 
rlim_max=RLIM64_INFINITY}) = 0
  statfs("/sys/fs/selinux", 0x7fff0e47ba00) = -1 ENOENT (No such file or 
directory)
  statfs("/selinux", 0x7fff0e47ba00)      = -1 ENOENT (No such file or 
directory)
  brk(NULL)                               = 0x5631ba1c2000
  brk(0x5631ba1e3000)                     = 0x5631ba1e3000
  openat(AT_FDCWD, "/proc/filesystems", O_RDONLY|O_CLOEXEC) = 3
  fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
  read(3, "nodev\tsysfs\nnodev\ttmpfs\nnodev\tbd"..., 1024) = 378
  read(3, "", 1024)                       = 0
  close(3)                                = 0
  access("/etc/selinux/config", F_OK)     = -1 ENOENT (No such file or 
directory)
  openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
  fstat(3, {st_mode=S_IFREG|0644, st_size=120914336, ...}) = 0
  mmap(NULL, 120914336, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fea94056000
  close(3)                                = 0
  socket(AF_NETLINK, SOCK_RAW, NETLINK_AUDIT) = 3
  fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
  openat(AT_FDCWD, "/proc/sys/kernel/ngroups_max", O_RDONLY) = 4
  read(4, "65536\n", 31)                  = 6
  close(4)                                = 0
  mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x7fea93fd5000
  openat(AT_FDCWD, "/etc/login.defs", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFREG|0644, st_size=10550, ...}) = 0
  read(4, "#\n# /etc/login.defs - Configurat"..., 4096) = 4096
  read(4, " issuing \n# the \"mesg y\" command"..., 4096) = 4096
  read(4, "algorithm compatible with the on"..., 4096) = 2358
  read(4, "", 4096)                       = 0
  close(4)                                = 0
  access("/etc/shadow", F_OK)             = 0
  access("/etc/gshadow", F_OK)            = 0
  openat(AT_FDCWD, "/etc/default/useradd", O_RDONLY) = 4
  fstat(4, {st_mode=S_IFREG|0644, st_size=1118, ...}) = 0
  read(4, "# Default values for useradd(8)\n"..., 4096) = 1118
  read(4, "", 4096)                       = 0
  close(4)                                = 0
  socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 4
  connect(4, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = 0
  sendto(4, "\2\0\0\0\f\0\0\0\6\0\0\0group\0", 18, MSG_NOSIGNAL, NULL, 0) = 18
  poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=4, 
revents=POLLIN|POLLHUP}])
  recvmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="group\0", 
iov_len=6}, {iov_base="\310O\3\0\0\0\0\0", iov_len=8}], msg_iovlen=2, 
msg_control=[{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, 
cmsg_data=[5]}], msg_controllen=20, msg_flags=MSG_CMSG_CLOEXEC}, 
MSG_CMSG_CLOEXEC) = 14
  mmap(NULL, 217032, PROT_READ, MAP_SHARED, 5, 0) = 0x7fea93fa0000
  close(5)                                = 0
  close(4)                                = 0
  stat("/bin/bash", {st_mode=S_IFREG|0755, st_size=1183448, ...}) = 0
  access("/bin/bash", X_OK)               = 0
  access("/etc/subuid", F_OK)             = 0
  access("/etc/subgid", F_OK)             = 0
  socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 4
  connect(4, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = 0
  sendto(4, "\2\0\0\0\v\0\0\0\7\0\0\0passwd\0", 19, MSG_NOSIGNAL, NULL, 0) = 19
  poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=4, 
revents=POLLIN|POLLHUP}])
  recvmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="passwd\0", 
iov_len=7}, {iov_base="\310O\3\0\0\0\0\0", iov_len=8}], msg_iovlen=2, 
msg_control=[{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, 
cmsg_data=[5]}], msg_controllen=20, msg_flags=MSG_CMSG_CLOEXEC}, 
MSG_CMSG_CLOEXEC) = 15
  mmap(NULL, 217032, PROT_READ, MAP_SHARED, 5, 0) = 0x7fea93f6b000
  close(5)                                = 0
  close(4)                                = 0
  socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 4
  connect(4, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = 0
  sendto(4, "\2\0\0\0\0\0\0\0\7\0\0\0user20\0", 19, MSG_NOSIGNAL, NULL, 0) = 19
  poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=4, 
revents=POLLIN}])
  read(4, 
"\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377\377\377\377\0\0\0\0\0\0\0\0"...,
 36) = 36
  close(4)                                = 0
  openat(AT_FDCWD, "/etc/.pwd.lock", O_WRONLY|O_CREAT|O_CLOEXEC, 0600) = 4
  rt_sigaction(SIGALRM, {sa_handler=0x7fea9b6565b0, sa_mask=~[], 
sa_flags=SA_RESTORER, sa_restorer=0x7fea9b574090}, {sa_handler=SIG_DFL, 
sa_mask=[], sa_flags=0}, 8) = 0
  rt_sigprocmask(SIG_UNBLOCK, [ALRM], [], 8) = 0
  alarm(15)                               = 0
  fcntl(4, F_SETLKW, {l_type=F_WRLCK, l_whence=SEEK_SET, l_start=0, l_len=0}) = 0
  alarm(0)                                = 15
  rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
  rt_sigaction(SIGALRM, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, 
sa_restorer=0x7fea9b574090}, NULL, 8) = 0
  getpid()                                = 49452
  openat(AT_FDCWD, "/etc/passwd.49452", O_WRONLY|O_CREAT|O_TRUNC, 0600) = 5
  getpid()                                = 49452
  write(5, "49452\0", 6)                  = 6
  close(5)                                = 0
  link("/etc/passwd.49452", "/etc/passwd.lock") = 0
  stat("/etc/passwd.49452", {st_mode=S_IFREG|0600, st_size=6, ...}) = 0
  unlink("/etc/passwd.49452")             = 0
  openat(AT_FDCWD, "/etc/passwd", O_RDWR|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW) = 5
  fcntl(5, F_GETFL)                       = 0x28802 (flags 
O_RDWR|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW)
  fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
  fstat(5, {st_mode=S_IFREG|0644, st_size=3559, ...}) = 0
  read(5, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 3559
  read(5, "", 4096)                       = 0
  getpid()                                = 49452
  openat(AT_FDCWD, "/etc/group.49452", O_WRONLY|O_CREAT|O_TRUNC, 0600) = 6
  getpid()                                = 49452
  write(6, "49452\0", 6)                  = 6
  close(6)                                = 0
  link("/etc/group.49452", "/etc/group.lock") = 0
  stat("/etc/group.49452", {st_mode=S_IFREG|0600, st_size=6, ...}) = 0
  unlink("/etc/group.49452")              = 0
  openat(AT_FDCWD, "/etc/group", O_RDWR|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW) = 6
  fcntl(6, F_GETFL)                       = 0x28802 (flags 
O_RDWR|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW)
  fcntl(6, F_SETFD, FD_CLOEXEC)           = 0
  fstat(6, {st_mode=S_IFREG|0644, st_size=1112, ...}) = 0
  read(6, "root:x:0:\ndaemon:x:1:\nbin:x:2:\ns"..., 4096) = 1112
  read(6, "", 4096)                       = 0
  getpid()                                = 49452
  openat(AT_FDCWD, "/etc/gshadow.49452", O_WRONLY|O_CREAT|O_TRUNC, 0600) = 7
  getpid()                                = 49452
  write(7, "49452\0", 6)                  = 6
  close(7)                                = 0
  link("/etc/gshadow.49452", "/etc/gshadow.lock") = 0
  stat("/etc/gshadow.49452", {st_mode=S_IFREG|0600, st_size=6, ...}) = 0
  unlink("/etc/gshadow.49452")            = 0
  openat(AT_FDCWD, "/etc/gshadow", O_RDWR|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW) = 7
  fcntl(7, F_GETFL)                       = 0x28802 (flags 
O_RDWR|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW)
  fcntl(7, F_SETFD, FD_CLOEXEC)           = 0
  fstat(7, {st_mode=S_IFREG|0640, st_size=914, ...}) = 0
  read(7, "root:*::\ndaemon:*::\nbin:*::\nsys:"..., 4096) = 914
  read(7, "", 4096)                       = 0
  getpid()                                = 49452
  openat(AT_FDCWD, "/etc/subuid.49452", O_WRONLY|O_CREAT|O_TRUNC, 0600) = 8
  getpid()                                = 49452
  write(8, "49452\0", 6)                  = 6
  close(8)                                = 0
  link("/etc/subuid.49452", "/etc/subuid.lock") = 0
  stat("/etc/subuid.49452", {st_mode=S_IFREG|0600, st_size=6, ...}) = 0
  unlink("/etc/subuid.49452")             = 0
  openat(AT_FDCWD, "/etc/subuid", O_RDWR|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW) = 8
  fcntl(8, F_GETFL)                       = 0x28802 (flags 
O_RDWR|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW)
  fcntl(8, F_SETFD, FD_CLOEXEC)           = 0
  fstat(8, {st_mode=S_IFREG|0644, st_size=254, ...}) = 0
  read(8, "ubuntu:100000:65536\nssfuser:1655"..., 4096) = 254
  read(8, "", 4096)                       = 0
  getpid()                                = 49452
  openat(AT_FDCWD, "/etc/subgid.49452", O_WRONLY|O_CREAT|O_TRUNC, 0600) = 9
  getpid()                                = 49452
  write(9, "49452\0", 6)                  = 6
  close(9)                                = 0
  link("/etc/subgid.49452", "/etc/subgid.lock") = 0
  stat("/etc/subgid.49452", {st_mode=S_IFREG|0600, st_size=6, ...}) = 0
  unlink("/etc/subgid.49452")             = 0
  openat(AT_FDCWD, "/etc/subgid", O_RDWR|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW) = 9
  fcntl(9, F_GETFL)                       = 0x28802 (flags 
O_RDWR|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW)
  fcntl(9, F_SETFD, FD_CLOEXEC)           = 0
  fstat(9, {st_mode=S_IFREG|0644, st_size=254, ...}) = 0
  read(9, "ubuntu:100000:65536\nssfuser:1655"..., 4096) = 254
  read(9, "", 4096)                       = 0
  brk(0x5631ba20a000)                     = 0x5631ba20a000
  socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 10
  connect(10, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = 0
  sendto(10, "\2\0\0\0\1\0\0\0\5\0\0\0001013\0", 17, MSG_NOSIGNAL, NULL, 0) = 17
  poll([{fd=10, events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=10, 
revents=POLLIN|POLLHUP}])
  read(10, 
"\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377\377\377\377\0\0\0\0\0\0\0\0"...,
 36) = 36
  close(10)                               = 0
  brk(0x5631ba1fb000)                     = 0x5631ba1fb000
  getpid()                                = 49452
  openat(AT_FDCWD, "/etc/shadow.49452", O_WRONLY|O_CREAT|O_TRUNC, 0600) = 10
  getpid()                                = 49452
  write(10, "49452\0", 6)                 = 6
  close(10)                               = 0
  link("/etc/shadow.49452", "/etc/shadow.lock") = 0
  stat("/etc/shadow.49452", {st_mode=S_IFREG|0600, st_size=6, ...}) = 0
  unlink("/etc/shadow.49452")             = 0
  openat(AT_FDCWD, "/etc/shadow", O_RDWR|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW) = 10
  fcntl(10, F_GETFL)                      = 0x28802 (flags 
O_RDWR|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW)
  fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
  fstat(10, {st_mode=S_IFREG|0640, st_size=2309, ...}) = 0
  read(10, "root:$6$AluCThYb6CawLX4T$S.fl6J7"..., 4096) = 2309
  read(10, "", 4096)                      = 0
  ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
  fstat(0, {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
  readlink("/proc/self/fd/0", "/dev/pts/0", 4095) = 10
  stat("/dev/pts/0", {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
  openat(AT_FDCWD, "/etc/localtime", O_RDONLY|O_CLOEXEC) = 11
  fstat(11, {st_mode=S_IFREG|0644, st_size=2852, ...}) = 0
  fstat(11, {st_mode=S_IFREG|0644, st_size=2852, ...}) = 0
  read(11, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\6\0\0\0\6\0\0\0\0"..., 
4096) = 2852
  lseek(11, -1810, SEEK_CUR)              = 1042
  read(11, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\6\0\0\0\6\0\0\0\0"..., 
4096) = 1810
  close(11)                               = 0
  getpid()                                = 49452
  socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 11
  connect(11, {sa_family=AF_UNIX, sun_path="/dev/log"}, 110) = 0
  sendto(11, "<86>Nov 28 19:12:15 useradd[4945"..., 129, MSG_NOSIGNAL, NULL, 0) 
= 129
  access("/var/log/faillog", F_OK)        = -1 ENOENT (No such file or 
directory)
  access("/var/log/lastlog", F_OK)        = 0
  openat(AT_FDCWD, "/var/log/lastlog", O_RDWR) = 12
  lseek(12, 295796, SEEK_SET)             = 295796
  write(12, 
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 292) = 
292
  fsync(12)                               = 0
  close(12)                               = 0
  readlink("/proc/self/exe", "/usr/sbin/useradd", 4096) = 17
  ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
  fstat(0, {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
  readlink("/proc/self/fd/0", "/dev/pts/0", 31) = 10
  stat("/dev/pts/0", {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
  lstat("/dev/pts/0", {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
  uname({sysname="Linux", nodename="ip-172-31-63-195", ...}) = 0
  sendto(3, {{len=124, type=0x45a /* NLMSG_??? */, 
flags=NLM_F_REQUEST|NLM_F_ACK, seq=1, pid=0}, 
"\x6f\x70\x3d\x61\x64\x64\x69\x6e\x67\x20\x75\x73\x65\x72\x20\x69\x64\x3d\x31\x30\x31\x33\x20\x65\x78\x65\x3d\x22\x2f\x75\x73\x72"...},
 124, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 124
  poll([{fd=3, events=POLLIN}], 1, 500)   = 1 ([{fd=3, revents=POLLIN}])
  recvfrom(3, {{len=36, type=NLMSG_ERROR, flags=NLM_F_CAPPED, seq=1, 
pid=49452}, {error=0, msg={len=124, type=0x45a /* AUDIT_??? */, 
flags=NLM_F_REQUEST|NLM_F_ACK, seq=1, pid=0}}}, 8988, MSG_PEEK|MSG_DONTWAIT, 
{sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, [12]) = 36
  recvfrom(3, {{len=36, type=NLMSG_ERROR, flags=NLM_F_CAPPED, seq=1, 
pid=49452}, {error=0, msg={len=124, type=0x45a /* AUDIT_??? */, 
flags=NLM_F_REQUEST|NLM_F_ACK, seq=1, pid=0}}}, 8988, MSG_DONTWAIT, 
{sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, [12]) = 36
  access("/home/user20", F_OK)            = -1 ENOENT (No such file or 
directory)
  access("/home", F_OK)                   = 0
  access("/home/user20", F_OK)            = -1 ENOENT (No such file or 
directory)
  mkdir("/home/user20", 000)              = 0
  chown("/home/user20", 0, 0)             = 0
  chmod("/home/user20", 0755)             = 0
  chown("/home/user20", 1013, 900)        = 0
  clone(child_stack=NULL, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7fea9b3a8550) = 49453
  wait4(49453, [{WIFEXITED(s) && WEXITSTATUS(s) == 42}], 0, NULL) = 49453
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49453, si_uid=0, 
si_status=42, si_utime=0, si_stime=0} ---
  chown("/home/user20", 1013, 900)        = 0
  chmod("/home/user20", 0700)             = 0
  ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
  fstat(0, {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
  readlink("/proc/self/fd/0", "/dev/pts/0", 31) = 10
  stat("/dev/pts/0", {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
  lstat("/dev/pts/0", {st_mode=S_IFCHR|0600, st_rdev=makedev(0x88, 0), ...}) = 0
  sendto(3, {{len=136, type=0x45a /* AUDIT_??? */, 
flags=NLM_F_REQUEST|NLM_F_ACK, seq=2, pid=0}, 
"\x6f\x70\x3d\x61\x64\x64\x69\x6e\x67\x20\x68\x6f\x6d\x65\x20\x64\x69\x72\x65\x63\x74\x6f\x72\x79\x20\x69\x64\x3d\x31\x30\x31\x33"...},
 136, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 136
  poll([{fd=3, events=POLLIN}], 1, 500)   = 1 ([{fd=3, revents=POLLIN}])
  recvfrom(3, {{len=36, type=NLMSG_ERROR, flags=NLM_F_CAPPED, seq=2, 
pid=49452}, {error=0, msg={len=136, type=0x45a /* AUDIT_??? */, 
flags=NLM_F_REQUEST|NLM_F_ACK, seq=2, pid=0}}}, 8988, MSG_PEEK|MSG_DONTWAIT, 
{sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, [12]) = 36
  recvfrom(3, {{len=36, type=NLMSG_ERROR, flags=NLM_F_CAPPED, seq=2, 
pid=49452}, {error=0, msg={len=136, type=0x45a /* AUDIT_??? */, 
flags=NLM_F_REQUEST|NLM_F_ACK, seq=2, pid=0}}}, 8988, MSG_DONTWAIT, 
{sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, [12]) = 36
  openat(AT_FDCWD, "/etc/skel", O_RDONLY|O_NOFOLLOW|O_CLOEXEC|O_DIRECTORY) = 12
  openat(AT_FDCWD, "/home/user20", O_RDONLY|O_NOFOLLOW|O_CLOEXEC|O_DIRECTORY) = 
13
  fstat(12, {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
  fcntl(12, F_GETFL)                      = 0x38000 (flags 
O_RDONLY|O_LARGEFILE|O_NOFOLLOW|O_DIRECTORY)
  fcntl(12, F_SETFD, FD_CLOEXEC)          = 0
  getdents64(12, /* 13 entries */, 32768) = 408
  newfstatat(12, "WinAte", {st_mode=S_IFDIR|0777, st_size=4096, ...}, 
AT_SYMLINK_NOFOLLOW) = 0
  mkdirat(13, "WinAte", 0700)             = 0
  fchownat(13, "WinAte", 1013, 900, AT_SYMLINK_NOFOLLOW) = 0
  close(12)                               = 0
  close(13)                               = 0
  fstat(5, {st_mode=S_IFREG|0644, st_size=3559, ...}) = 0
  fstat(5, {st_mode=S_IFREG|0644, st_size=3559, ...}) = 0
  umask(0777)                             = 077
  openat(AT_FDCWD, "/etc/passwd-", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 12
  umask(077)                              = 0777
  fchown(12, 0, 0)                        = 0
  fchmod(12, 0644)                        = 0
  lseek(5, 0, SEEK_SET)                   = 0
  read(5, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 3559
  fstat(12, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
  read(5, "", 4096)                       = 0
  write(12, "root:x:0:0:root:/root:/bin/bash\n"..., 3559) = 3559
  fsync(12)                               = 0
  close(12)                               = 0
  utime("/etc/passwd-", {actime=1669690399 /* 2022-11-28T18:53:19-0800 */, 
modtime=1669690398 /* 2022-11-28T18:53:18-0800 */}) = 0
  close(5)                                = 0
  umask(0777)                             = 077
  openat(AT_FDCWD, "/etc/passwd+", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5
  umask(077)                              = 0777
  fchown(5, 0, 0)                         = 0
  fchmod(5, 0644)                         = 0
  fstat(5, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
  write(5, "root:x:0:0:root:/root:/bin/bash\n"..., 3607) = 3607
  fsync(5)                                = 0
  close(5)                                = 0
  lstat("/etc/passwd", {st_mode=S_IFREG|0644, st_size=3559, ...}) = 0
  rename("/etc/passwd+", "/etc/passwd")   = 0
  fstat(10, {st_mode=S_IFREG|0640, st_size=2309, ...}) = 0
  fstat(10, {st_mode=S_IFREG|0640, st_size=2309, ...}) = 0
  umask(0777)                             = 077
  openat(AT_FDCWD, "/etc/shadow-", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5
  umask(077)                              = 0777
  fchown(5, 0, 42)                        = 0
  fchmod(5, 0640)                         = 0
  lseek(10, 0, SEEK_SET)                  = 0
  read(10, "root:$6$AluCThYb6CawLX4T$S.fl6J7"..., 4096) = 2309
  fstat(5, {st_mode=S_IFREG|0640, st_size=0, ...}) = 0
  read(10, "", 4096)                      = 0
  write(5, "root:$6$AluCThYb6CawLX4T$S.fl6J7"..., 2309) = 2309
  fsync(5)                                = 0
  close(5)                                = 0
  utime("/etc/shadow-", {actime=1669690422 /* 2022-11-28T18:53:42-0800 */, 
modtime=1669690421 /* 2022-11-28T18:53:41-0800 */}) = 0
  close(10)                               = 0
  umask(0777)                             = 077
  openat(AT_FDCWD, "/etc/shadow+", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5
  umask(077)                              = 0777
  fchown(5, 0, 42)                        = 0
  fchmod(5, 0640)                         = 0
  fstat(5, {st_mode=S_IFREG|0640, st_size=0, ...}) = 0
  write(5, "root:$6$AluCThYb6CawLX4T$S.fl6J7"..., 2345) = 2345
  fsync(5)                                = 0
  close(5)                                = 0
  lstat("/etc/shadow", {st_mode=S_IFREG|0640, st_size=2309, ...}) = 0
  rename("/etc/shadow+", "/etc/shadow")   = 0
  fstat(8, {st_mode=S_IFREG|0644, st_size=254, ...}) = 0
  fstat(8, {st_mode=S_IFREG|0644, st_size=254, ...}) = 0
  umask(0777)                             = 077
  openat(AT_FDCWD, "/etc/subuid-", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5
  umask(077)                              = 0777
  fchown(5, 0, 0)                         = 0
  fchmod(5, 0644)                         = 0
  lseek(8, 0, SEEK_SET)                   = 0
  read(8, "ubuntu:100000:65536\nssfuser:1655"..., 4096) = 254
  fstat(5, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
  read(8, "", 4096)                       = 0
  write(5, "ubuntu:100000:65536\nssfuser:1655"..., 254) = 254
  fsync(5)                                = 0
  close(5)                                = 0
  utime("/etc/subuid-", {actime=1669691535 /* 2022-11-28T19:12:15-0800 */, 
modtime=1669690391 /* 2022-11-28T18:53:11-0800 */}) = 0
  close(8)                                = 0
  umask(0777)                             = 077
  openat(AT_FDCWD, "/etc/subuid+", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5
  umask(077)                              = 0777
  fchown(5, 0, 0)                         = 0
  fchmod(5, 0644)                         = 0
  fstat(5, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
  write(5, "ubuntu:100000:65536\nssfuser:1655"..., 274) = 274
  fsync(5)                                = 0
  close(5)                                = 0
  lstat("/etc/subuid", {st_mode=S_IFREG|0644, st_size=254, ...}) = 0
  rename("/etc/subuid+", "/etc/subuid")   = 0
  fstat(9, {st_mode=S_IFREG|0644, st_size=254, ...}) = 0
  fstat(9, {st_mode=S_IFREG|0644, st_size=254, ...}) = 0
  umask(0777)                             = 077
  openat(AT_FDCWD, "/etc/subgid-", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5
  umask(077)                              = 0777
  fchown(5, 0, 0)                         = 0
  fchmod(5, 0644)                         = 0
  lseek(9, 0, SEEK_SET)                   = 0
  read(9, "ubuntu:100000:65536\nssfuser:1655"..., 4096) = 254
  fstat(5, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
  read(9, "", 4096)                       = 0
  write(5, "ubuntu:100000:65536\nssfuser:1655"..., 254) = 254
  fsync(5)                                = 0
  close(5)                                = 0
  utime("/etc/subgid-", {actime=1669691535 /* 2022-11-28T19:12:15-0800 */, 
modtime=1669690391 /* 2022-11-28T18:53:11-0800 */}) = 0
  close(9)                                = 0
  umask(0777)                             = 077
  openat(AT_FDCWD, "/etc/subgid+", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5
  umask(077)                              = 0777
  fchown(5, 0, 0)                         = 0
  fchmod(5, 0644)                         = 0
  fstat(5, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
  write(5, "ubuntu:100000:65536\nssfuser:1655"..., 274) = 274
  fsync(5)                                = 0
  close(5)                                = 0
  lstat("/etc/subgid", {st_mode=S_IFREG|0644, st_size=254, ...}) = 0
  rename("/etc/subgid+", "/etc/subgid")   = 0
  unlink("/etc/shadow.lock")              = 0
  unlink("/etc/passwd.lock")              = 0
  close(6)                                = 0
  unlink("/etc/group.lock")               = 0
  close(7)                                = 0
  unlink("/etc/gshadow.lock")             = 0
  unlink("/etc/subuid.lock")              = 0
  unlink("/etc/subgid.lock")              = 0
  clone(child_stack=NULL, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7fea9b3a8550) = 49454
  wait4(49454, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 49454
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49454, si_uid=0, 
si_status=0, si_utime=0, si_stime=0} ---
  clone(child_stack=NULL, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7fea9b3a8550) = 49455
  wait4(49455, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 49455
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49455, si_uid=0, 
si_status=0, si_utime=0, si_stime=0} ---
  clone(child_stack=NULL, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7fea9b3a8550) = 49456
  wait4(49456, [{WIFEXITED(s) && WEXITSTATUS(s) == 127}], 0, NULL) = 49456
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49456, si_uid=0, 
si_status=127, si_utime=0, si_stime=0} ---
  close(4)                                = 0
  socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 4
  connect(4, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = 0
  sendto(4, "\2\0\0\0\1\0\0\0\5\0\0\0001013\0", 17, MSG_NOSIGNAL, NULL, 0) = 17
  poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=4, 
revents=POLLIN|POLLHUP}])
  read(4, 
"\2\0\0\0\1\0\0\0\7\0\0\0\2\0\0\0\365\3\0\0\204\3\0\0\7\0\0\0\r\0\0\0"..., 36) 
= 36
  read(4, "user20\0x\0User20\0/home/user20\0/bi"..., 39) = 39
  close(4)                                = 0
  access("/sbin/pam_tally2", X_OK)        = 0
  clone(child_stack=NULL, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7fea9b3a8550) = 49457
  wait4(49457, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 49457
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49457, si_uid=0, 
si_status=0, si_utime=0, si_stime=0} ---
  clone(child_stack=NULL, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7fea9b3a8550) = 49458
  wait4(49458, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 49458
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49458, si_uid=0, 
si_status=0, si_utime=0, si_stime=0} ---
  clone(child_stack=NULL, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7fea9b3a8550) = 49459
  wait4(49459, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 49459
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49459, si_uid=0, 
si_status=0, si_utime=0, si_stime=0} ---
  clone(child_stack=NULL, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7fea9b3a8550) = 49460
  wait4(49460, [{WIFEXITED(s) && WEXITSTATUS(s) == 127}], 0, NULL) = 49460
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=49460, si_uid=0, 
si_status=127, si_utime=0, si_stime=0} ---
  exit_group(0)                           = ?
  +++ exited with 0 +++

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