Description of problem:
/usr/bin/hardlink segfaults in strlen() on armv7, see bellow. I know it's late for Fedora, but this report might be valuable from upstream point of view. It needs the "-vvv" option passed to hardlink to reproduce.

[dan@helios dir]$ gdb /usr/bin/hardlink
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Reading symbols from /usr/bin/hardlink...

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https://debuginfod.fedoraproject.org/ 
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
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Reading symbols from /home/dan/.cache/debuginfod_client/f655da68516ba60ae83a3bdd2e3dae184fe32546/debuginfo...
(gdb) set args -n -c -vv .
(gdb) run
Starting program: /usr/bin/hardlink -n -c -vv .
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
Mode:                     dry-run
Method:                   sha256
Files:                    3
Linked:                   0 files
Compared:                 0 xattrs
Compared:                 0 files
Saved:                    0 B
Duration:                 0.001277 seconds
[Inferior 1 (process 529) exited normally]
(gdb) set args -n -c -vvv .
(gdb) run
Starting program: /usr/bin/hardlink -n -c -vvv .
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
Scanning [device/inode/links]:

Program received signal SIGSEGV, Segmentation fault.
strlen () at ../sysdeps/arm/armv6t2/strlen.S:126
126		ldrd	data1a, data1b, [src]
(gdb) where
#0  strlen () at ../sysdeps/arm/armv6t2/strlen.S:126
#1  0xb6e5c948 in __vfprintf_internal (s=0xb6f7bd50 <_IO_2_1_stdout_>, format=format@entry=0x0, ap=..., mode_flags=<optimized out>) at vfprintf-internal.c:1517
#2  0xb6f094a0 in ___vfprintf_chk (fp=<optimized out>, flag=flag@entry=1, format=format@entry=0x0, ap=..., ap@entry=...) at vfprintf_chk.c:29
#3  0x0040271c in vfprintf (__ap=..., __fmt=0x0, __stream=<optimized out>) at /usr/include/bits/stdio2.h:135
#4  jlog (level=level@entry=JLOG_VERBOSE2, format=0x407ad0 " %5zu: [%ld/%ld/%zu] %s") at misc-utils/hardlink.c:230
#5  0x004054e4 in inserter (ftwbuf=0xbefff0e4, typeflag=<optimized out>, sb=0xbeffeff0, fpath=0x41deb8 "/opt/data/scratch/t460/pmtuts.zip") at misc-utils/hardlink.c:814
#6  inserter (fpath=0x41deb8 "/opt/data/scratch/t460/pmtuts.zip", sb=sb@entry=0xbeffeff0, typeflag=<optimized out>, ftwbuf=ftwbuf@entry=0xbefff0e4) at misc-utils/hardlink.c:783
#7  0xb6ee72ac in process_entry (data=data@entry=0xbefff0d0, dir=dir@entry=0xbefff090, name=<optimized out>, name@entry=0x41ef23 "pmtuts.zip", namlen=<optimized out>, 
    d_type=<optimized out>) at ftw.c:472
#8  0xb6ee777c in ftw_dir (data=data@entry=0xbefff0d0, st=0x0, st@entry=0xbefff108, old_dir=old_dir@entry=0x0) at ftw.c:551
#9  0xb6ee80d4 in ftw_startup (dir=<optimized out>, is_nftw=is_nftw@entry=1, func=func@entry=0x40530c <inserter>, descriptors=descriptors@entry=20, flags=flags@entry=1) at ftw.c:771
#10 0xb6ee820c in __new_nftw64 (path=<optimized out>, func=func@entry=0x40530c <inserter>, descriptors=descriptors@entry=20, flags=flags@entry=1) at ftw.c:844
#11 0x00401bf8 in main (argc=5, argv=0xbefff404) at misc-utils/hardlink.c:1374


Version-Release number of selected component (if applicable):
glibc-2.35-22.fc36.armv7hl
util-linux-2.38-1.fc36.armv7hl


How reproducible:
100%

Steps to Reproduce:
1. enter a directory with some files
2. /usr/bin/hardlink -n -c -vvv .

Actual results:
segfault

Expected results:
report about hardlinked files

Additional info:
The system is a Helios4 board based on a Marvell Armada SoC (https://kobol.io/helios4/).

[dan@helios t460]$ cat /proc/cpuinfo 
processor	: 0
model name	: ARMv7 Processor rev 1 (v7l)
BogoMIPS	: 800.00
Features	: half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpd32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x4
CPU part	: 0xc09
CPU revision	: 1

processor	: 1
model name	: ARMv7 Processor rev 1 (v7l)
BogoMIPS	: 800.00
Features	: half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpd32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x4
CPU part	: 0xc09
CPU revision	: 1

Hardware	: Marvell Armada 380/385 (Device Tree)
Revision	: 0000
Serial		: 0000000000000000