Author: Tejun Heo <tj@xxxxxxxxxx> AuthorDate: Tue, 24 Feb 2009 11:57:20 +0900 Commit: Tejun Heo <tj@xxxxxxxxxx> CommitDate: Tue, 24 Feb 2009 11:57:20 +0900 percpu: fix pcpu_chunk_struct_size Impact: fix short allocation leading to memory corruption While dropping rvalue wrapping macros around global parameters, pcpu_chunk_struct_size was set incorrectly resulting in shorter page pointer array. Fix it. Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> --- mm/percpu.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/percpu.c b/mm/percpu.c index 997724c..ed92caa 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -850,7 +850,7 @@ size_t __init pcpu_setup_static(pcpu_populate_pte_fn_t populate_pte_fn, pcpu_chunk_size = num_possible_cpus() * pcpu_unit_size; pcpu_nr_slots = pcpu_size_to_slot(pcpu_unit_size) + 1; pcpu_chunk_struct_size = sizeof(struct pcpu_chunk) - + (1 << pcpu_unit_pages_shift) * sizeof(struct page *); + + num_possible_cpus() * pcpu_unit_pages * sizeof(struct page *); /* allocate chunk slots */ pcpu_slot = alloc_bootmem(pcpu_nr_slots * sizeof(pcpu_slot[0])); -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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