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net: openvswitch: fix possible memory leak in ovs_meter_cmd_set()

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commit 2fa28f5c6f upstream.

old_meter needs to be free after it is detached regardless of whether
the new meter is successfully attached.

Fixes: c7c4c44c9a ("net: openvswitch: expand the meters supported number")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hangyu Hua 2023-02-10 10:05:51 +08:00 • committed by Justin Hammond
parent 998db6949f
commit 547e235fc4
1 changed files with 3 additions and 1 deletions
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4
net/openvswitch/meter.c
View file

@ -450,7 +450,7 @@ static int ovs_meter_cmd_set(struct sk_buff *skb, struct genl_info *info)
err = attach_meter(meter_tbl, meter);
if (err)
goto exit_unlock;
goto exit_free_old_meter;
ovs_unlock();
@ -473,6 +473,8 @@ static int ovs_meter_cmd_set(struct sk_buff *skb, struct genl_info *info)
genlmsg_end(reply, ovs_reply_header);
return genlmsg_reply(reply, info);
exit_free_old_meter:
ovs_meter_free(old_meter);
exit_unlock:
ovs_unlock();
nlmsg_free(reply);