From: Andy Pei <andy.pei@intel.com>
To: dev@dpdk.org
Cc: andy.pei@intel.com, rosen.xu@intel.com, stable@dpdk.org
Subject: [dpdk-dev] [PATCH] raw/ifpga: fix unintentional integer overflow
Date: Wed, 22 May 2019 14:42:49 +0800 [thread overview]
Message-ID: <1558507369-350703-1-git-send-email-andy.pei@intel.com> (raw)
cast unsigned int ports_per_retimer, unsigned int nums_retimer,
unsigned int nums_fvl and unsigned int ports_per_fvl to uint64_t
before multiply operation, to avoid Unintentional integer overflow.
Coverity issue: 337924, 337926
Fixes: d1cd4eb2d48e ("raw/ifpga: support ipn3ke")
Cc: rosen.xu@intel.com
Cc: stable@dpdk.org
Signed-off-by: Andy Pei <andy.pei@intel.com>
---
drivers/raw/ifpga_rawdev/ifpga_rawdev.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/raw/ifpga_rawdev/ifpga_rawdev.c b/drivers/raw/ifpga_rawdev/ifpga_rawdev.c
index 41be1a2..9c68666 100644
--- a/drivers/raw/ifpga_rawdev/ifpga_rawdev.c
+++ b/drivers/raw/ifpga_rawdev/ifpga_rawdev.c
@@ -494,8 +494,8 @@
if (!strcmp(attr_name, "LineSideLinkPortNum")) {
if (opae_manager_get_retimer_info(mgr, &opae_rtm_info))
return -1;
- uint64_t tmp = opae_rtm_info.ports_per_retimer *
- opae_rtm_info.nums_retimer;
+ uint64_t tmp = (uint64_t)opae_rtm_info.ports_per_retimer *
+ (uint64_t)opae_rtm_info.nums_retimer;
*attr_value = tmp;
return 0;
}
@@ -547,8 +547,8 @@
if (!strcmp(attr_name, "NICSideLinkPortNum")) {
if (opae_manager_get_retimer_info(mgr, &opae_rtm_info))
return -1;
- uint64_t tmp = opae_rtm_info.nums_fvl *
- opae_rtm_info.ports_per_fvl;
+ uint64_t tmp = (uint64_t)opae_rtm_info.nums_fvl *
+ (uint64_t)opae_rtm_info.ports_per_fvl;
*attr_value = tmp;
return 0;
}
--
1.8.3.1
next reply other threads:[~2019-05-22 6:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-22 6:42 Andy Pei [this message]
2019-05-23 2:11 ` Xu, Rosen
2019-05-23 2:52 ` Pei, Andy
2019-05-23 3:00 ` Xu, Rosen
2019-07-04 7:16 ` Pei, Andy
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