linux-kernel - Re: [PATCH RFC 3/3] coredump: support AF

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250430-alliierte-umbenannt-eeee362b1312@brauner>
Date: Wed, 30 Apr 2025 13:14:30 +0200
From: Christian Brauner <brauner@...nel.org>
To: linux-fsdevel@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>, 
	Alexander Viro <viro@...iv.linux.org.uk>, Daan De Meyer <daan.j.demeyer@...il.com>, 
	David Rheinsberg <david@...dahead.eu>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Jan Kara <jack@...e.cz>, Kuniyuki Iwashima <kuniyu@...zon.com>, 
	Lennart Poettering <lennart@...ttering.net>, Luca Boccassi <bluca@...ian.org>, Mike Yuan <me@...dnzj.com>, 
	Oleg Nesterov <oleg@...hat.com>, Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, 
	Zbigniew Jędrzejewski-Szmek <zbyszek@...waw.pl>, linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH RFC 3/3] coredump: support AF_UNIX sockets

> This is easy to test:
> 
> (a) coredump processing (we're using socat):
> 
>     > cat coredump_socket.sh
>     #!/bin/bash
> 
>     set -x
> 
>     sudo bash -c "echo ':/tmp/stream.sock' > /proc/sys/kernel/core_pattern"
>     socat --statistics unix-listen:/tmp/stream.sock,fork FILE:core_file,create,append,truncate

Don't use "truncate" please. It's not a socat option and it won't work.
The correct option is "trunc".