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From: "sjon at hortensius dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/27389] getaddrinfo in chroot broken by added dlopen block
Date: Wed, 10 Feb 2021 08:41:14 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27389

--- Comment #1 from sjon at hortensius dot net ---
Some more information for clarification:

# grep dns /etc/nsswitch
hosts: files dns

# strace -eopenat -f /usr/bin/php-fpm --nodaemonize --fpm-config
/etc/php/php-fpm.conf 2>&1|grep nss
openat(AT_FDCWD, "/etc/ssl/openssl.cnf", O_RDONLY) =3D 3
openat(AT_FDCWD, "/etc/nsswitch.conf", O_RDONLY|O_CLOEXEC) =3D 22
openat(AT_FDCWD, "/usr/lib/libnss_files.so.2", O_RDONLY|O_CLOEXEC) =3D 22
openat(AT_FDCWD, "/usr/lib/libnss_systemd.so.2", O_RDONLY|O_CLOEXEC) =3D 22

# curl https://localhost/test.php
getaddrinfo failed: System error

--

# grep dns /etc/nsswitch
passwd: dns files systemd
hosts: files dns

# strace -eopenat -f /usr/bin/php-fpm --nodaemonize --fpm-config
/etc/php/php-fpm.conf 2>&1|grep nss
openat(AT_FDCWD, "/etc/ssl/openssl.cnf", O_RDONLY) =3D 3
openat(AT_FDCWD, "/etc/nsswitch.conf", O_RDONLY|O_CLOEXEC) =3D 22
openat(AT_FDCWD, "/usr/lib/libnss_dns.so.2", O_RDONLY|O_CLOEXEC) =3D 22
openat(AT_FDCWD, "/usr/lib/libnss_files.so.2", O_RDONLY|O_CLOEXEC) =3D 22
openat(AT_FDCWD, "/usr/lib/libnss_systemd.so.2", O_RDONLY|O_CLOEXEC) =3D 22

# curl https://localhost/test.php
works

--=20
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