From: Dan Carpenter <dan.carpenter@linaro.org>
To: Ido Schimmel <idosch@nvidia.com>
Cc: David Ahern <dsahern@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Petr Machata <petrm@nvidia.com>,
Kees Cook <keescook@chromium.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [PATCH v2 net] nexthop: fix uninitialized variable in nla_put_nh_group_stats()
Date: Thu, 21 Mar 2024 17:42:18 +0300 [thread overview]
Message-ID: <f08ac289-d57f-4a1a-830f-cf9a0563cb9c@moroto.mountain> (raw)
The "*hw_stats_used" value needs to be set on the success paths to prevent
an uninitialized variable bug in the caller, nla_put_nh_group_stats().
Fixes: 5072ae00aea4 ("net: nexthop: Expose nexthop group HW stats to user space")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
v2: Set the variable in nh_grp_hw_stats_update() instead of
nla_put_nh_group_stats().
net/ipv4/nexthop.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index 74928a9d1aa4..535856b0f0ed 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -768,8 +768,10 @@ static int nh_grp_hw_stats_update(struct nexthop *nh, bool *hw_stats_used)
struct net *net = nh->net;
int err;
- if (nexthop_notifiers_is_empty(net))
+ if (nexthop_notifiers_is_empty(net)) {
+ *hw_stats_used = false;
return 0;
+ }
err = nh_notifier_grp_hw_stats_init(&info, nh);
if (err)
--
2.43.0
next reply other threads:[~2024-03-21 14:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-21 14:42 Dan Carpenter [this message]
2024-03-21 15:35 ` [PATCH v2 net] nexthop: fix uninitialized variable in nla_put_nh_group_stats() Jiri Pirko
2024-03-21 17:36 ` Ido Schimmel
2024-03-23 1:10 ` patchwork-bot+netdevbpf
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