Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 20 May 2024 13:29:41 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 278936] mqueuefs: Crashes when removing queue as user
Message-ID:  <bug-278936-227-SBfKatAKkO@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-278936-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-278936-227@https.bugs.freebsd.org/bugzilla/>

next in thread | previous in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D278936

--- Comment #3 from Ricardo Branco <rbranco@suse.com> ---
I managed to crash -STABLE (didn't try -RELEASE) like this:

$ sudo mount -t mqueuefs none /mnt

$ touch /mnt/{1..101}  # Needs Bash I think
touch: /mnt/101: Resource temporarily unavailable

$ sysctl kern.mqueue
kern.mqueue.curmq: 100
kern.mqueue.maxmq: 100
kern.mqueue.maxmsgsize: 16384
kern.mqueue.maxmsg: 100

$ rm -f /mnt/*

$ sysctl kern.mqueue
kern.mqueue.curmq: 0
kern.mqueue.maxmq: 100
kern.mqueue.maxmsgsize: 16384
kern.mqueue.maxmsg: 100

$ for i in {1..101} ; do posixmqcontrol create -d /$i -s 1 -d 1; done
posixmqcontrol: mq_open(create): Too many open files in system

$ rm -f /mnt/*



POSIX message queues seem broken on FreeBSD. There's no limit per-user. I t=
ried
this on Linux and it only allowed me to create only 10 messages queues as u=
ser,
without limiting root.

--=20
You are receiving this mail because:
You are the assignee for the bug.=



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-278936-227-SBfKatAKkO>