net/cxgbe: fix NULL deref in CLIP failure path
Checks
Commit Message
From: Shagun Agrawal <shaguna@chelsio.com>
Fixes: 3f2c1e20 ("net/cxgbe: add Compressed Local IP region")
Coverity issue: 302872
Signed-off-by: Shagun Agrawal <shaguna@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
---
drivers/net/cxgbe/clip_tbl.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
Comments
26/07/2018 10:19, Rahul Lakkireddy:
> From: Shagun Agrawal <shaguna@chelsio.com>
>
> Fixes: 3f2c1e20 ("net/cxgbe: add Compressed Local IP region")
> Coverity issue: 302872
>
> Signed-off-by: Shagun Agrawal <shaguna@chelsio.com>
> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Applied, thanks
@@ -105,7 +105,7 @@ static struct clip_entry *t4_clip_alloc(struct rte_eth_dev *dev,
struct adapter *adap = ethdev2adap(dev);
struct clip_tbl *ctbl = adap->clipt;
struct clip_entry *ce;
- int ret;
+ int ret = 0;
if (!ctbl)
return NULL;
@@ -120,12 +120,10 @@ static struct clip_entry *t4_clip_alloc(struct rte_eth_dev *dev,
ce->type = FILTER_TYPE_IPV6;
rte_atomic32_set(&ce->refcnt, 1);
ret = clip6_get_mbox(dev, lip);
- if (ret) {
+ if (ret)
dev_debug(adap,
"CLIP FW ADD CMD failed: %d",
ret);
- ce = NULL;
- }
} else {
ce->type = FILTER_TYPE_IPV4;
}
@@ -136,7 +134,7 @@ static struct clip_entry *t4_clip_alloc(struct rte_eth_dev *dev,
}
t4_os_write_unlock(&ctbl->lock);
- return ce;
+ return ret ? NULL : ce;
}
/**