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From: "diabonas at gmx dot de" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug nss/27343] initgroups() SIGSEGVs when called on a system
 without nsswich.conf (in a chroot)
Date: Thu, 04 Feb 2021 12:15:25 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27343

Jonas Witschel <diabonas at gmx dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |diabonas at gmx dot de

--- Comment #2 from Jonas Witschel <diabonas at gmx dot de> ---
FWIW, creating /etc/nsswitch.conf (identical to the one from the main syste=
m)
within the chroot doesn't do the trick either, the reproducer still crashes
with the same strace. I experimented with adding multiple files like
/etc/passwd and /etc/group to the chroot, but couldn't get initgroups() to =
work
at all without crashing.

Just for cross-referencing purposes, this was reported downstream against
Unbound as well (https://github.com/NLnetLabs/unbound/issues/418), and as a
tracking bug in Arch Linux (https://bugs.archlinux.org/task/69532).

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