BUG #17867: pg_dump intermittently hangs

The following bug has been logged on the website:

Bug reference: 17867
Logged by: Mayur Lokare
Email address: mayur(dot)lokare%veritas(dot)com(at)gtempaccount(dot)com
PostgreSQL version: 14.6
Operating system: Red Hat Universal Base Image 8/ UBI8
Description:

Database demo contains 667 tables and around 30 GB of data.

pg_dump command :
pg_dump host=server.postgres.database.azure.com -p 5432
username=admin1(at)server -w -F c -dbname=demo -v -f /root/out.dump

Getting below stack:
(gdb) bt
#0 0x00007f6ab8ea6bc8 in write () from /lib64/libc.so.6
#1 0x00007f6ab8e18dad in _IO_file_write@@GLIBC_2.2.5 () from
/lib64/libc.so.6
#2 0x00007f6ab8e1811f in new_do_write () from /lib64/libc.so.6
#3 0x00007f6ab8e194de in _GI_IO_file_xsputn () from /lib64/libc.so.6
#4 0x00007f6ab8e0e56c in fwrite () from /lib64/libc.so.6
#5 0x000000000043d861 in flushbuffer ()
#6 0x000000000043f064 in pg_vfprintf ()
#7 0x000000000043f148 in pg_fprintf ()
#8 0x000000000043bf4a in pg_log_generic_v ()
#9 0x000000000043c1d8 in pg_log_generic ()
#10 0x00000000004090d9 in dumpTableData_copy ()
#11 0x000000000043195b in WriteDataChunksForTocEntry ()
#12 0x00000000004319e6 in WriteDataChunks ()
#13 0x0000000000433199 in _CloseArchive ()
#14 0x000000000042c92e in CloseArchive ()
#15 0x0000000000406536 in main ()

on another database userdb, we have 5193 tables and around 60 mb of data
pg_dump host=server.postgres.database.azure.com -p 5432
username=admin1(at)server -w -F c -dbname=userdb -v -f /root/out2.dump

(gdb) bt

#0  0x00007fe6a9920bc8 in write () from /lib64/libc.so.6
#1  0x00007fe6a9892dad in _IO_file_write@@GLIBC_2.2.5 () from
/lib64/libc.so.6
#2  0x00007fe6a989211f in new_do_write () from /lib64/libc.so.6
#3  0x00007fe6a98934de in __GI__IO_file_xsputn () from /lib64/libc.so.6
#4  0x00007fe6a988856c in fwrite () from /lib64/libc.so.6
#5  0x000000000043d861 in flushbuffer ()
#6  0x000000000043f064 in pg_vfprintf ()
#7  0x000000000043f148 in pg_fprintf ()
#8  0x000000000043bf4a in pg_log_generic_v ()
#9  0x000000000043c1d8 in pg_log_generic ()
#10 0x0000000000421db1 in getTableAttrs ()
#11 0x0000000000425431 in getSchemaData ()
#12 0x00000000004059a1 in main ()