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authorEric Dumazet <eric.dumazet@gmail.com>2010-03-24 22:25:47 +0100
committerPekka Enberg <penberg@cs.helsinki.fi>2010-05-22 10:57:30 +0300
commitbbd7d57bfe852d9788bae5fb171c7edb4021d8ac (patch)
tree9b16ed244e0bd0b71a1d3d6e662be310f1e8f9c2 /mm/rmap.c
parente40152ee1e1c7a63f4777791863215e3faa37a86 (diff)
slub: Potential stack overflow
I discovered that we can overflow stack if CONFIG_SLUB_DEBUG=y and use slabs with many objects, since list_slab_objects() and process_slab() use DECLARE_BITMAP(map, page->objects). With 65535 bits, we use 8192 bytes of stack ... Switch these allocations to dynamic allocations. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'mm/rmap.c')
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