3.17-stable review patch. If anyone has any objections, please let me know.
------------------ From: Kirill Tkhai <ktk...@parallels.com> commit f1e3a0932f3a9554371792a7daaf1e0eb19f66d5 upstream. Probability of use-after-free isn't zero in this place. Signed-off-by: Kirill Tkhai <ktk...@parallels.com> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Cc: Paul E. McKenney <paul...@linux.vnet.ibm.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Link: http://lkml.kernel.org/r/20140922183636.11015.83611.stgit@localhost Signed-off-by: Ingo Molnar <mi...@kernel.org> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- kernel/sched/core.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4008,13 +4008,14 @@ long sched_setaffinity(pid_t pid, const * root_domain. */ #ifdef CONFIG_SMP - if (task_has_dl_policy(p)) { - const struct cpumask *span = task_rq(p)->rd->span; - - if (dl_bandwidth_enabled() && !cpumask_subset(span, new_mask)) { + if (task_has_dl_policy(p) && dl_bandwidth_enabled()) { + rcu_read_lock(); + if (!cpumask_subset(task_rq(p)->rd->span, new_mask)) { retval = -EBUSY; + rcu_read_unlock(); goto out_unlock; } + rcu_read_unlock(); } #endif again: -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
