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| author | Mike Frysinger <vapier.adi@gmail.com> | 2008-11-18 09:48:21 (GMT) |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2008-11-18 09:48:21 (GMT) |
| commit | dce783c5e400d6a470c86ccb5a7fdeabf27afbf4 (patch) | |
| tree | a33bd6aa60514620856b473ece56af91190c4015 | |
| parent | 8624991187c365779f101b926662950794a6bfbe (diff) | |
| download | linux-dce783c5e400d6a470c86ccb5a7fdeabf27afbf4.tar.xz | |
Blackfin arch: add BUG_ON() checks to make sure we dont overflow the cplb tables
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
| -rw-r--r-- | arch/blackfin/kernel/cplb-nompu/cplbinit.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/blackfin/kernel/cplb-nompu/cplbinit.c b/arch/blackfin/kernel/cplb-nompu/cplbinit.c index afef5c7..e14c37e 100644 --- a/arch/blackfin/kernel/cplb-nompu/cplbinit.c +++ b/arch/blackfin/kernel/cplb-nompu/cplbinit.c @@ -420,8 +420,17 @@ void __init generate_cplb_tables_cpu(unsigned int cpu) } } - /* close tables */ + /* make sure we locked the kernel start */ + BUG_ON(cplb.init_i.pos < 2 + cplb_data[ZERO_P].valid); + BUG_ON(cplb.init_d.pos < 1 + cplb_data[ZERO_P].valid + cplb_data[L1D_MEM].valid); + + /* make sure we didnt overflow the table */ + BUG_ON(cplb.init_i.size <= cplb.init_i.pos); + BUG_ON(cplb.init_d.size <= cplb.init_d.pos); + BUG_ON(cplb.switch_i.size <= cplb.switch_i.pos); + BUG_ON(cplb.switch_d.size <= cplb.switch_d.pos); + /* close tables */ close_cplbtab(&cplb.init_i); close_cplbtab(&cplb.init_d); |