[Bug 1915059] fstrim crashed with signal 31 in __faccessat()

[Apport retracing service]

StacktraceTop:
 __faccessat (fd=fd at entry=3, file=file at entry=0x562c23bc1bf4 "partition", mode=mode at entry=0, flag=flag at entry=0) at ../sysdeps/unix/sysv/linux/faccessat.c:29
 ul_path_access (pc=pc at entry=0x562c24e87260, mode=mode at entry=0, path=path at entry=0x562c23bc1bf4 "partition") at lib/path.c:318
 sysfs_blkdev_get_wholedisk (pc=pc at entry=0x562c24e87260, diskname=diskname at entry=0x0, len=len at entry=0, diskdevno=diskdevno at entry=0x7ffd521f60b8) at lib/sysfs.c:520
 has_discard (wholedisk=<synthetic pointer>, devname=0x562c24e85d40 "/dev/sdb1") at sys-utils/fstrim.c:178
 fstrim_all_from_file (filename=<optimized out>, ctl=0x7ffd521f60c0) at sys-utils/fstrim.c:347

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Title:
  fstrim crashed with signal 31 in __faccessat()

Status in util-linux package in Ubuntu:
  Confirmed

Bug description:
  showed this crash after a full-upgrade.

  ProblemType: Crash
  DistroRelease: Ubuntu 21.04
  Package: util-linux 2.36.1-1ubuntu2
  ProcVersionSignature: Ubuntu 5.10.0-14.15-generic 5.10.11
  Uname: Linux 5.10.0-14-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu57
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Mon Feb  8 19:37:25 2021
  ExecutablePath: /usr/sbin/fstrim
  InstallationDate: Installed on 2021-01-28 (10 days ago)
  InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20210123)
  ProcCmdline: /sbin/fstrim --listed-in /etc/fstab:/proc/self/mountinfo --verbose --quiet-unsupported
  Signal: 31
  SourcePackage: util-linux
  StacktraceTop:
   __faccessat (fd=3, file=0x562c23bc1bf4 "partition", mode=0, flag=0) at ../sysdeps/unix/sysv/linux/faccessat.c:29
   ?? ()
   ?? ()
   ?? ()
   __libc_start_main (main=0x562c23bb7060, argc=5, argv=0x7ffd521f6338, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd521f6328) at ../csu/libc-start.c:332
  Title: fstrim crashed with signal 31 in __faccessat()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: N/A
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