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![Tahsin Erdogan](https://secure.gravatar.com/avatar/6cf9bb2af4cf35fe57226ef17ca4c4e3.jpg?s=96&d=mm)
Tahsin Erdogan committed 3f406ecddf8
percpu: acquire pcpu_lock when updating pcpu_nr_empty_pop_pages commit 320661b08dd6f1746d5c7ab4eb435ec64b97cd45 upstream. Update to pcpu_nr_empty_pop_pages in pcpu_alloc() is currently done without holding pcpu_lock. This can lead to bad updates to the variable. Add missing lock calls. Fixes: b539b87fed37 ("percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated") Signed-off-by: Tahsin Erdogan <tahsin@google.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>