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From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
To: akpm@linux-foundation.org, Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [patch 0/4] DEBUG_RCU_HEAD: Debug and fix racy call_rcu() users
Date: Tue, 06 Oct 2009 10:37:28 -0400	[thread overview]
Message-ID: <20091006143727.868480435@polymtl.ca> (raw)

Here is a patchset, done on 2.6.30.9, which permits to detect and fix racy
call_rcu() users.

Fix for vunmap, which happens to be one of them, is included.

Note that some false-positives might come up when call_rcu() is called on
uninitialized struct rcu_head. The solution is, surprisingly enough, to
initialize them.

Thanks,

Mathieu

-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68

             reply	other threads:[~2009-10-06 14:41 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-06 14:37 Mathieu Desnoyers [this message]
2009-10-06 14:37 ` [patch 1/4] kernel call_rcu usage: initialize rcu_head structures Mathieu Desnoyers
2009-10-06 15:19   ` [patch 1/4] kernel call_rcu usage: initialize rcu_head structures (v2) Mathieu Desnoyers
2009-10-06 14:37 ` [patch 2/4] tree rcu: Add debug RCU head option Mathieu Desnoyers
2009-10-06 15:54   ` Eric Dumazet
2009-10-06 16:09     ` Mathieu Desnoyers
2009-10-06 16:17       ` Eric Dumazet
2009-10-06 16:35         ` Mathieu Desnoyers
2009-10-06 14:37 ` [patch 3/4] markers call_rcu usage: initialize rcu_head structures Mathieu Desnoyers
2009-10-06 14:37 ` [patch 4/4] vunmap: Fix racy use of rcu_head Mathieu Desnoyers
2009-10-06 15:23   ` Mathieu Desnoyers
2009-10-06 16:43   ` Christoph Lameter
2009-10-06 17:33     ` Mathieu Desnoyers
2009-10-07  4:20 ` [patch 0/4] DEBUG_RCU_HEAD: Debug and fix racy call_rcu() users Paul E. McKenney
2009-10-07 12:36   ` Mathieu Desnoyers
2009-10-12 18:07 ` Ingo Molnar
2009-10-12 18:30   ` Mathieu Desnoyers
2009-10-12 18:37     ` Ingo Molnar
2009-10-12 18:56       ` Thomas Gleixner

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