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Message-ID: <13056.1260538746@redhat.com>
Date: Fri, 11 Dec 2009 13:39:06 +0000
From: David Howells <dhowells@...hat.com>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: dhowells@...hat.com, LKML <linux-kernel@...r.kernel.org>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Dipankar Sarma <dipankar@...ibm.com>,
Ingo Molnar <mingo@...e.hu>,
Peter Zijlstra <peterz@...radead.org>,
Oleg Nesterov <oleg@...sign.ru>,
Al Viro <viro@...iv.linux.org.uk>,
James Morris <jmorris@...ei.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [patch 0/9] Fix various __task_cred related invalid RCU assumptions
Thomas Gleixner <tglx@...utronix.de> wrote:
> While auditing the read_lock(&tasklist_lock) sites for a possible
> conversion to rcu-read_lock() I stumbled over an unprotected user of
> __task_cred in kernel/sys.c
I'm sure last time I looked, spinlock primitives implied RCU read locks.
Maybe I was mistaken or maybe it's changed. Whatever, good catch, Thomas!
Thanks,
David
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