Messages in this thread Patch in this message | | | From | Jon Mason <> | Subject | [PATCH 02/10] ntb: off by one sanity checks | Date | Mon, 6 May 2013 18:55:21 -0700 |
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From: Dan Carpenter <dan.carpenter@oracle.com>
These tests are off by one. If "mw" is equal to NTB_NUM_MW then we would go beyond the end of the ndev->mw[] array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jon Mason <jon.mason@intel.com> --- drivers/ntb/ntb_hw.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c index f802e7c..195cc51 100644 --- a/drivers/ntb/ntb_hw.c +++ b/drivers/ntb/ntb_hw.c @@ -345,7 +345,7 @@ int ntb_read_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 *val) */ void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw) { - if (mw > NTB_NUM_MW) + if (mw >= NTB_NUM_MW) return NULL; return ndev->mw[mw].vbase; @@ -362,7 +362,7 @@ void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw) */ resource_size_t ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw) { - if (mw > NTB_NUM_MW) + if (mw >= NTB_NUM_MW) return 0; return ndev->mw[mw].bar_sz; @@ -380,7 +380,7 @@ resource_size_t ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw) */ void ntb_set_mw_addr(struct ntb_device *ndev, unsigned int mw, u64 addr) { - if (mw > NTB_NUM_MW) + if (mw >= NTB_NUM_MW) return; dev_dbg(&ndev->pdev->dev, "Writing addr %Lx to BAR %d\n", addr, -- 1.7.9.5
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