From: Miklos Szeredi <miklos@szeredi.hu>
To: matthew@wil.cx
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: DoS with POSIX file locks?
Date: Mon, 20 Mar 2006 12:41:21 +0100 [thread overview]
Message-ID: <E1FLIlF-0007zR-00@dorka.pomaz.szeredi.hu> (raw)
Unlike open files there doesn't seem to be any limit on the number of
locks being held either globally or by a single process.
Hence an unprivileged process can consume large amounts of unswappable
kernel memory even if there are strict limits on other resources.
Is there a reason why this shouldn't be a problem?
Miklos
next reply other threads:[~2006-03-20 11:41 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-20 11:41 Miklos Szeredi [this message]
2006-03-20 12:11 ` DoS with POSIX file locks? Matthew Wilcox
2006-03-20 12:19 ` Miklos Szeredi
2006-03-20 12:39 ` Matthew Wilcox
2006-03-20 12:52 ` Miklos Szeredi
2006-03-20 13:13 ` Arjan van de Ven
2006-03-20 13:24 ` Miklos Szeredi
2006-03-20 13:30 ` Arjan van de Ven
2006-03-20 13:39 ` Miklos Szeredi
2006-03-20 15:32 ` Matthew Wilcox
2006-03-20 16:41 ` Miklos Szeredi
2006-03-20 20:35 ` J. Bruce Fields
2006-03-21 6:38 ` Miklos Szeredi
2006-03-20 18:22 ` Trond Myklebust
2006-03-21 9:44 ` Miklos Szeredi
2006-03-21 17:28 ` Trond Myklebust
2006-03-21 17:58 ` Miklos Szeredi
2006-03-21 18:16 ` Trond Myklebust
2006-03-21 19:16 ` Chris Wright
2006-03-22 6:21 ` Miklos Szeredi
2006-03-22 11:12 ` Trond Myklebust
2006-03-22 12:16 ` Miklos Szeredi
2006-03-22 15:56 ` Trond Myklebust
2006-03-22 16:34 ` Miklos Szeredi
2006-03-22 20:07 ` Trond Myklebust
2006-03-22 20:19 ` Miklos Szeredi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=E1FLIlF-0007zR-00@dorka.pomaz.szeredi.hu \
--to=miklos@szeredi.hu \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=matthew@wil.cx \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).