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Date: Wed, 8 Oct 2014 16:43:17 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: Hariprasad S <hariprasad@...lsio.com> Cc: netdev@...r.kernel.org, kernel-janitors@...r.kernel.org Subject: [patch 1/2 v2 -next] cxgb4: potential shift wrapping bug "cntxt_id" is an unsigned int but "udb" is a u64 so there is a potential shift wrapping bug here. Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com> --- No changes since v1. diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index bb7851e..e8e90ce 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -2258,7 +2258,7 @@ static u64 udb_address(struct adapter *adap, unsigned int cntxt_id, (QUEUESPERPAGEPF1 - QUEUESPERPAGEPF0) * adap->fn); udb_density = 1 << ((qpp >> s_qpp) & QUEUESPERPAGEPF0_MASK); qpshift = PAGE_SHIFT - ilog2(udb_density); - udb = cntxt_id << qpshift; + udb = (u64)cntxt_id << qpshift; udb &= PAGE_MASK; page = udb / PAGE_SIZE; udb += (cntxt_id - (page * udb_density)) * SGE_UDB_SIZE; -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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