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From: Szabolcs Nagy <>
To: Adhemerval Zanella <>,
	"" <>
Cc: nd <>, linux-man <>
Subject: Re: glibc in master is incompatible with systemd-nspawn
Date: Fri, 8 Nov 2019 16:01:58 +0000
Message-ID: <> (raw)
In-Reply-To: <>

On 08/11/2019 15:33, Adhemerval Zanella wrote:
> Since when systemd-nspawn has this behaviour? What was the rationale to
> use EPERM instead of ENOSYS? IMHO ENOSYS it the expected error in this
> case, since filtering is essentially blocking the syscall usage altogether.

docker does the same, but at least you can disable it
with --security-opt seccomp:unconfined

i think the original sin was committed by chromium
which uses EPERM in its sandbox.

it's of course broken whenever the application is
run on a newer kernel+libc than what was used for
creating the filter, may be the seccomp manual should
warn against the use of EPERM (there is already a
caveats section)?

       reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <>
     [not found] ` <>
     [not found]   ` <>
     [not found]     ` <>
2019-11-08 16:01       ` Szabolcs Nagy [this message]
2019-11-08 16:19         ` Florian Weimer
2019-11-08 16:23           ` Christian Brauner

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