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From: David Howells <dhowells@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: dhowells@redhat.com, "Kirill A. Shutemov" <kirill@shutemov.name>,
	"Michael L. Semon" <mlsemon35@gmail.com>,
	Ingo Molnar <mingo@kernel.org>,
	jason.low2@hp.com, linux-kernel@vger.kernel.org,
	viro@ZenIV.linux.org.uk
Subject: Re: cred_guard_mutex vs seq_file::lock [was: Re: 3.14.0+/x86: lockdep and mutexes not getting along]
Date: Fri, 11 Apr 2014 15:50:27 +0100	[thread overview]
Message-ID: <26259.1397227827@warthog.procyon.org.uk> (raw)
In-Reply-To: <20140410142918.GU11096@twins.programming.kicks-ass.net>

Peter Zijlstra <peterz@infradead.org> wrote:

> Al, David, any bright ideas on how to best fix this?

Have the seq_xxx() code throw an error if current->in_execve is true.  I can't
think of any circumstance where execve() should be reading anything that uses
seq_xxx().

David

  parent reply	other threads:[~2014-04-11 14:51 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-06  5:12 3.14.0+/x86: lockdep and mutexes not getting along Michael L. Semon
2014-04-09 12:19 ` Kirill A. Shutemov
2014-04-10  5:42   ` Jason Low
2014-04-10  8:14     ` Peter Zijlstra
2014-04-10  9:15     ` Kirill A. Shutemov
2014-04-10 11:42       ` Peter Zijlstra
2014-04-10  9:18     ` Peter Zijlstra
2014-04-10 14:15       ` Peter Zijlstra
2014-04-11 13:59         ` Valdis.Kletnieks
2014-04-14  7:22         ` [tip:core/urgent] locking/mutex: Fix debug_mutexes tip-bot for Peter Zijlstra
2014-04-10 17:14       ` 3.14.0+/x86: lockdep and mutexes not getting along Jason Low
2014-04-10 17:28         ` Peter Zijlstra
2014-04-10 19:04           ` Jason Low
2014-04-10 23:26         ` Dave Jones
2014-04-10 23:30           ` Dave Jones
2014-04-11  3:48           ` Paul E. McKenney
2014-04-11 13:41     ` Michael L. Semon
2014-04-10  8:12   ` Peter Zijlstra
2014-04-10  8:13   ` Peter Zijlstra
2014-04-10 14:29   ` cred_guard_mutex vs seq_file::lock [was: Re: 3.14.0+/x86: lockdep and mutexes not getting along] Peter Zijlstra
2014-04-11 14:50   ` David Howells [this message]
2014-04-11 15:07     ` Al Viro
2014-07-30 22:31       ` Kirill A. Shutemov
2014-07-30 23:03         ` Kirill A. Shutemov
2014-07-31  7:26         ` Cyrill Gorcunov

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