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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
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

             reply index

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 ` 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

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