AppArmor: Fix reference to rcu protected pointer outside of rcu_read_lock
The pointer returned from tracehook_tracer_task() is only valid inside the rcu_read_lock. However the tracer pointer obtained is being passed to aa_may_ptrace outside of the rcu_read_lock critical section. Mover the aa_may_ptrace test into the rcu_read_lock critical section, to fix this. Kernels affected: 2.6.36 - 3.0 Reported-by:Oleg Nesterov <oleg@redhat.com> Cc: stable@kernel.org Signed-off-by:
John Johansen <john.johansen@canonical.com>
parent
b0af8dfd
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