root@instance-20211028-0318:~# gdb -p 107553
GNU gdb (Ubuntu 9.2-0ubuntu1~20.04.1) 9.2
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "aarch64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word".
Attaching to process 107553
Reading symbols from /usr/bin/php-cgi8.0...
(No debugging symbols found in /usr/bin/php-cgi8.0)

warning: .dynamic section for "/lib/ld-linux-aarch64.so.1" is not at the expected address (wrong library or version mismatch?)
Reading symbols from /lib/aarch64-linux-gnu/libargon2.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libargon2.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libresolv.so.2...
Reading symbols from /usr/lib/debug/.build-id/4f/3cb338e480755a8230af8186cfb702b3a79713.debug...
Reading symbols from /lib/aarch64-linux-gnu/libutil.so.1...
Reading symbols from /usr/lib/debug/.build-id/a3/000349dc3fcc097d9fa7c79f0126761e372063.debug...
Reading symbols from /lib/aarch64-linux-gnu/libm.so.6...
Reading symbols from /usr/lib/debug/.build-id/ef/5f79ec54a7fe0dbb8f0cf2a360c360978c8d39.debug...
Reading symbols from /lib/aarch64-linux-gnu/libdl.so.2...
Reading symbols from /usr/lib/debug/.build-id/e6/bacb58f1852797463ae6de925c26bd634492bf.debug...
Reading symbols from /lib/aarch64-linux-gnu/libxml2.so.2...
(No debugging symbols found in /lib/aarch64-linux-gnu/libxml2.so.2)
Reading symbols from /lib/aarch64-linux-gnu/libssl.so.1.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libssl.so.1.1)
Reading symbols from /lib/aarch64-linux-gnu/libcrypto.so.1.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libcrypto.so.1.1)
Reading symbols from /lib/aarch64-linux-gnu/libpcre2-8.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libpcre2-8.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libz.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libz.so.1)
--Type <RET> for more, q to quit, c to continue without paging--
Reading symbols from /lib/aarch64-linux-gnu/libsodium.so.23...
(No debugging symbols found in /lib/aarch64-linux-gnu/libsodium.so.23)
Reading symbols from /lib/aarch64-linux-gnu/libc.so.6...
Reading symbols from /usr/lib/debug/.build-id/b7/b30ba2c0f618615a8d32d86813718bb2fdb567.debug...
Reading symbols from /lib/ld-linux-aarch64.so.1...
Reading symbols from /usr/lib/debug/.build-id/b6/7648e0ab1141e21a749711cde7a7b250b9e1d3.debug...
Reading symbols from /lib/aarch64-linux-gnu/libpthread.so.0...
Reading symbols from /usr/lib/debug/.build-id/9e/e85bfaafff46d2fae9ac6c7ff06a68e9080cc8.debug...

warning: File "/usr/lib/aarch64-linux-gnu/libthread_db-1.0.so" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
To enable execution of this file add
        add-auto-load-safe-path /usr/lib/aarch64-linux-gnu/libthread_db-1.0.so
line to your configuration file "/root/.gdbinit".
To completely disable this security protection add
        set auto-load safe-path /
line to your configuration file "/root/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
        info "(gdb)Auto-loading safe path"

warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.
Reading symbols from /lib/aarch64-linux-gnu/libicuuc.so.66...
(No debugging symbols found in /lib/aarch64-linux-gnu/libicuuc.so.66)
Reading symbols from /lib/aarch64-linux-gnu/liblzma.so.5...
(No debugging symbols found in /lib/aarch64-linux-gnu/liblzma.so.5)
Reading symbols from /lib/aarch64-linux-gnu/libicudata.so.66...
(No debugging symbols found in /lib/aarch64-linux-gnu/libicudata.so.66)
Reading symbols from /lib/aarch64-linux-gnu/libstdc++.so.6...
(No debugging symbols found in /lib/aarch64-linux-gnu/libstdc++.so.6)
Reading symbols from /lib/aarch64-linux-gnu/libgcc_s.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libgcc_s.so.1)
Reading symbols from /usr/lib/php/20200930/opcache.so...
(No debugging symbols found in /usr/lib/php/20200930/opcache.so)
Reading symbols from /lib/aarch64-linux-gnu/librt.so.1...
Reading symbols from /usr/lib/debug/.build-id/98/f3772542f72acef62cf88faa9eb9a2e8326405.debug...
Reading symbols from /usr/lib/php/20200930/mysqlnd.so...
(No debugging symbols found in /usr/lib/php/20200930/mysqlnd.so)
Reading symbols from /usr/lib/php/20200930/pdo.so...
(No debugging symbols found in /usr/lib/php/20200930/pdo.so)
Reading symbols from /usr/lib/php/20200930/xml.so...
(No debugging symbols found in /usr/lib/php/20200930/xml.so)
Reading symbols from /usr/lib/php/20200930/bcmath.so...
--Type <RET> for more, q to quit, c to continue without paging--
(No debugging symbols found in /usr/lib/php/20200930/bcmath.so)
Reading symbols from /usr/lib/php/20200930/calendar.so...
(No debugging symbols found in /usr/lib/php/20200930/calendar.so)
Reading symbols from /usr/lib/php/20200930/ctype.so...
(No debugging symbols found in /usr/lib/php/20200930/ctype.so)
Reading symbols from /usr/lib/php/20200930/curl.so...
(No debugging symbols found in /usr/lib/php/20200930/curl.so)
Reading symbols from /lib/aarch64-linux-gnu/libcurl.so.4...
(No debugging symbols found in /lib/aarch64-linux-gnu/libcurl.so.4)
Reading symbols from /lib/aarch64-linux-gnu/libnghttp2.so.14...
(No debugging symbols found in /lib/aarch64-linux-gnu/libnghttp2.so.14)
Reading symbols from /lib/aarch64-linux-gnu/libidn2.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libidn2.so.0)
Reading symbols from /lib/aarch64-linux-gnu/librtmp.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/librtmp.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libssh.so.4...
(No debugging symbols found in /lib/aarch64-linux-gnu/libssh.so.4)
Reading symbols from /lib/aarch64-linux-gnu/libpsl.so.5...
(No debugging symbols found in /lib/aarch64-linux-gnu/libpsl.so.5)
Reading symbols from /lib/aarch64-linux-gnu/libgssapi_krb5.so.2...
(No debugging symbols found in /lib/aarch64-linux-gnu/libgssapi_krb5.so.2)
Reading symbols from /lib/aarch64-linux-gnu/libldap_r-2.4.so.2...
(No debugging symbols found in /lib/aarch64-linux-gnu/libldap_r-2.4.so.2)
Reading symbols from /lib/aarch64-linux-gnu/liblber-2.4.so.2...
(No debugging symbols found in /lib/aarch64-linux-gnu/liblber-2.4.so.2)
Reading symbols from /lib/aarch64-linux-gnu/libbrotlidec.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libbrotlidec.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libunistring.so.2...
(No debugging symbols found in /lib/aarch64-linux-gnu/libunistring.so.2)
Reading symbols from /lib/aarch64-linux-gnu/libgnutls.so.30...
(No debugging symbols found in /lib/aarch64-linux-gnu/libgnutls.so.30)
Reading symbols from /lib/aarch64-linux-gnu/libhogweed.so.5...
(No debugging symbols found in /lib/aarch64-linux-gnu/libhogweed.so.5)
Reading symbols from /lib/aarch64-linux-gnu/libnettle.so.7...
(No debugging symbols found in /lib/aarch64-linux-gnu/libnettle.so.7)
Reading symbols from /lib/aarch64-linux-gnu/libgmp.so.10...
(No debugging symbols found in /lib/aarch64-linux-gnu/libgmp.so.10)
Reading symbols from /lib/aarch64-linux-gnu/libkrb5.so.3...
--Type <RET> for more, q to quit, c to continue without paging--
(No debugging symbols found in /lib/aarch64-linux-gnu/libkrb5.so.3)
Reading symbols from /lib/aarch64-linux-gnu/libk5crypto.so.3...
(No debugging symbols found in /lib/aarch64-linux-gnu/libk5crypto.so.3)
Reading symbols from /lib/aarch64-linux-gnu/libcom_err.so.2...
(No debugging symbols found in /lib/aarch64-linux-gnu/libcom_err.so.2)
Reading symbols from /lib/aarch64-linux-gnu/libkrb5support.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libkrb5support.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libsasl2.so.2...
(No debugging symbols found in /lib/aarch64-linux-gnu/libsasl2.so.2)
Reading symbols from /lib/aarch64-linux-gnu/libgssapi.so.3...
(No debugging symbols found in /lib/aarch64-linux-gnu/libgssapi.so.3)
Reading symbols from /lib/aarch64-linux-gnu/libbrotlicommon.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libbrotlicommon.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libp11-kit.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libp11-kit.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libtasn1.so.6...
(No debugging symbols found in /lib/aarch64-linux-gnu/libtasn1.so.6)
Reading symbols from /lib/aarch64-linux-gnu/libkeyutils.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libkeyutils.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libheimntlm.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libheimntlm.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libkrb5.so.26...
(No debugging symbols found in /lib/aarch64-linux-gnu/libkrb5.so.26)
Reading symbols from /lib/aarch64-linux-gnu/libasn1.so.8...
(No debugging symbols found in /lib/aarch64-linux-gnu/libasn1.so.8)
Reading symbols from /lib/aarch64-linux-gnu/libhcrypto.so.4...
(No debugging symbols found in /lib/aarch64-linux-gnu/libhcrypto.so.4)
Reading symbols from /lib/aarch64-linux-gnu/libroken.so.18...
(No debugging symbols found in /lib/aarch64-linux-gnu/libroken.so.18)
Reading symbols from /lib/aarch64-linux-gnu/libffi.so.7...
(No debugging symbols found in /lib/aarch64-linux-gnu/libffi.so.7)
Reading symbols from /lib/aarch64-linux-gnu/libwind.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libwind.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libheimbase.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libheimbase.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libhx509.so.5...
(No debugging symbols found in /lib/aarch64-linux-gnu/libhx509.so.5)
Reading symbols from /lib/aarch64-linux-gnu/libsqlite3.so.0...
--Type <RET> for more, q to quit, c to continue without paging--
(No debugging symbols found in /lib/aarch64-linux-gnu/libsqlite3.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libcrypt.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libcrypt.so.1)
Reading symbols from /usr/lib/php/20200930/dom.so...
(No debugging symbols found in /usr/lib/php/20200930/dom.so)
Reading symbols from /usr/lib/php/20200930/exif.so...
(No debugging symbols found in /usr/lib/php/20200930/exif.so)
Reading symbols from /usr/lib/php/20200930/ffi.so...
(No debugging symbols found in /usr/lib/php/20200930/ffi.so)
Reading symbols from /usr/lib/php/20200930/fileinfo.so...
(No debugging symbols found in /usr/lib/php/20200930/fileinfo.so)
Reading symbols from /usr/lib/php/20200930/ftp.so...
(No debugging symbols found in /usr/lib/php/20200930/ftp.so)
Reading symbols from /usr/lib/php/20200930/gd.so...
(No debugging symbols found in /usr/lib/php/20200930/gd.so)
Reading symbols from /lib/aarch64-linux-gnu/libgd.so.3...
(No debugging symbols found in /lib/aarch64-linux-gnu/libgd.so.3)
Reading symbols from /lib/aarch64-linux-gnu/libpng16.so.16...
(No debugging symbols found in /lib/aarch64-linux-gnu/libpng16.so.16)
Reading symbols from /lib/aarch64-linux-gnu/libfontconfig.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libfontconfig.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libfreetype.so.6...
(No debugging symbols found in /lib/aarch64-linux-gnu/libfreetype.so.6)
Reading symbols from /lib/aarch64-linux-gnu/libjpeg.so.8...
(No debugging symbols found in /lib/aarch64-linux-gnu/libjpeg.so.8)
Reading symbols from /lib/aarch64-linux-gnu/libXpm.so.4...
(No debugging symbols found in /lib/aarch64-linux-gnu/libXpm.so.4)
Reading symbols from /lib/aarch64-linux-gnu/libtiff.so.5...
(No debugging symbols found in /lib/aarch64-linux-gnu/libtiff.so.5)
Reading symbols from /lib/aarch64-linux-gnu/libwebp.so.6...
(No debugging symbols found in /lib/aarch64-linux-gnu/libwebp.so.6)
Reading symbols from /lib/aarch64-linux-gnu/libexpat.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libexpat.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libuuid.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libuuid.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libX11.so.6...
(No debugging symbols found in /lib/aarch64-linux-gnu/libX11.so.6)
Reading symbols from /lib/aarch64-linux-gnu/libzstd.so.1...
--Type <RET> for more, q to quit, c to continue without paging--
(No debugging symbols found in /lib/aarch64-linux-gnu/libzstd.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libjbig.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libjbig.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libxcb.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libxcb.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libXau.so.6...
(No debugging symbols found in /lib/aarch64-linux-gnu/libXau.so.6)
Reading symbols from /lib/aarch64-linux-gnu/libXdmcp.so.6...
(No debugging symbols found in /lib/aarch64-linux-gnu/libXdmcp.so.6)
Reading symbols from /lib/aarch64-linux-gnu/libbsd.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libbsd.so.0)
Reading symbols from /usr/lib/php/20200930/gettext.so...
(No debugging symbols found in /usr/lib/php/20200930/gettext.so)
Reading symbols from /usr/lib/php/20200930/iconv.so...
(No debugging symbols found in /usr/lib/php/20200930/iconv.so)
Reading symbols from /usr/lib/php/20200930/mbstring.so...
(No debugging symbols found in /usr/lib/php/20200930/mbstring.so)
Reading symbols from /lib/aarch64-linux-gnu/libonig.so.5...
(No debugging symbols found in /lib/aarch64-linux-gnu/libonig.so.5)
Reading symbols from /usr/lib/php/20200930/mysqli.so...
(No debugging symbols found in /usr/lib/php/20200930/mysqli.so)
Reading symbols from /usr/lib/php/20200930/pdo_mysql.so...
(No debugging symbols found in /usr/lib/php/20200930/pdo_mysql.so)
Reading symbols from /usr/lib/php/20200930/pdo_sqlite.so...
(No debugging symbols found in /usr/lib/php/20200930/pdo_sqlite.so)
Reading symbols from /usr/lib/php/20200930/phar.so...
(No debugging symbols found in /usr/lib/php/20200930/phar.so)
Reading symbols from /usr/lib/php/20200930/posix.so...
(No debugging symbols found in /usr/lib/php/20200930/posix.so)
Reading symbols from /usr/lib/php/20200930/readline.so...
(No debugging symbols found in /usr/lib/php/20200930/readline.so)
Reading symbols from /lib/aarch64-linux-gnu/libedit.so.2...
(No debugging symbols found in /lib/aarch64-linux-gnu/libedit.so.2)
Reading symbols from /lib/aarch64-linux-gnu/libtinfo.so.6...
(No debugging symbols found in /lib/aarch64-linux-gnu/libtinfo.so.6)
Reading symbols from /usr/lib/php/20200930/shmop.so...
(No debugging symbols found in /usr/lib/php/20200930/shmop.so)
Reading symbols from /usr/lib/php/20200930/simplexml.so...
--Type <RET> for more, q to quit, c to continue without paging--
(No debugging symbols found in /usr/lib/php/20200930/simplexml.so)
Reading symbols from /usr/lib/php/20200930/sockets.so...
(No debugging symbols found in /usr/lib/php/20200930/sockets.so)
Reading symbols from /usr/lib/php/20200930/sqlite3.so...
(No debugging symbols found in /usr/lib/php/20200930/sqlite3.so)
Reading symbols from /usr/lib/php/20200930/sysvmsg.so...
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Reading symbols from /usr/lib/php/20200930/sysvsem.so...
(No debugging symbols found in /usr/lib/php/20200930/sysvsem.so)
Reading symbols from /usr/lib/php/20200930/sysvshm.so...
(No debugging symbols found in /usr/lib/php/20200930/sysvshm.so)
Reading symbols from /usr/lib/php/20200930/tokenizer.so...
(No debugging symbols found in /usr/lib/php/20200930/tokenizer.so)
Reading symbols from /usr/lib/php/20200930/xmlreader.so...
(No debugging symbols found in /usr/lib/php/20200930/xmlreader.so)
Reading symbols from /usr/lib/php/20200930/xmlwriter.so...
(No debugging symbols found in /usr/lib/php/20200930/xmlwriter.so)
Reading symbols from /usr/lib/php/20200930/xsl.so...
(No debugging symbols found in /usr/lib/php/20200930/xsl.so)
Reading symbols from /lib/aarch64-linux-gnu/libxslt.so.1...
(No debugging symbols found in /lib/aarch64-linux-gnu/libxslt.so.1)
Reading symbols from /lib/aarch64-linux-gnu/libexslt.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libexslt.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libgcrypt.so.20...
(No debugging symbols found in /lib/aarch64-linux-gnu/libgcrypt.so.20)
Reading symbols from /lib/aarch64-linux-gnu/libgpg-error.so.0...
(No debugging symbols found in /lib/aarch64-linux-gnu/libgpg-error.so.0)
Reading symbols from /lib/aarch64-linux-gnu/libnss_files.so.2...
Reading symbols from /usr/lib/debug/.build-id/64/717a87a20c4917fa46775553215497233379a6.debug...
Reading symbols from /lib/aarch64-linux-gnu/libnss_dns.so.2...
Reading symbols from /usr/lib/debug/.build-id/c1/1385dfa76b58116a6bcb1abd1a8cbd7f4df999.debug...

warning: File "/usr/lib/aarch64-linux-gnu/libthread_db-1.0.so" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".

warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.
fts_children (sp=0xffffda786d18, instr=2) at ../sysdeps/wordsize-64/../../io/fts.c:529
529     ../sysdeps/wordsize-64/../../io/fts.c: No such file or directory.
(gdb)
(gdb)