Re: [patch 2/9] fs: Add missing rcu protection for __task_cred() in sys_ioprio_get

David Howells
2009-12-11T13:46:56Z

Thomas Gleixner <tglx@linutronix.de> wrote:

> sys_ioprio_get() accesses __task_cred() without being in a RCU read
> side critical section. tasklist_lock is not protecting that when
> CONFIG_TREE_PREEMPT_RCU=y.
>
> Add a rcu_read_lock/unlock() section around the code which accesses
> __task_cred().
>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Acked-by: David Howells <dhowells@redhat.com>