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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Petr Machata , Kees Cook , 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() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 s= pace") Signed-off-by: Dan Carpenter Reviewed-by: Ido Schimmel Reviewed-by: Jiri Pirko --- 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 =3D nh->net; int err; =20 - if (nexthop_notifiers_is_empty(net)) + if (nexthop_notifiers_is_empty(net)) { + *hw_stats_used =3D false; return 0; + } =20 err =3D nh_notifier_grp_hw_stats_init(&info, nh); if (err) --=20 2.43.0