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Commit a002d148 authored by Huang Shijie's avatar Huang Shijie Committed by Tejun Heo
Browse files

percpu: fix a memory leak in pcpu_extend_area_map() 



The original code did not free the old map.  This patch fixes it.

tj: use @old as memcpy source instead of @chunk->map, and indentation
    and description update

Signed-off-by: default avatarHuang Shijie <shijie8@gmail.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: stable@kernel.org
parent 94cb121c

mm/percpu.c

+3 −1
Original line number Diff line number Diff line
@@ -393,7 +393,9 @@ static int pcpu_extend_area_map(struct pcpu_chunk *chunk, int new_alloc) 
		goto out_unlock;



	old_size = chunk->map_alloc * sizeof(chunk->map[0]);

	memcpy(new, chunk->map, old_size);

	old = chunk->map;



	memcpy(new, old, old_size);



	chunk->map_alloc = new_alloc;

	chunk->map = new;