Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 007/158] ipv6: Fix error path to cancel the meseage | Date | Mon, 23 Nov 2020 13:20:35 +0100 |
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From: Zhang Qilong <zhangqilong3@huawei.com>
[ Upstream commit ceb736e1d45c253f5e86b185ca9b497cdd43063f ]
genlmsg_cancel() needs to be called in the error path of inet6_fill_ifmcaddr and inet6_fill_ifacaddr to cancel the message.
Fixes: 6ecf4c37eb3e ("ipv6: enable IFA_TARGET_NETNSID for RTM_GETADDR") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com> Link: https://lore.kernel.org/r/20201112080950.1476302-1-zhangqilong3@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/ipv6/addrconf.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
--- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -4984,8 +4984,10 @@ static int inet6_fill_ifmcaddr(struct sk return -EMSGSIZE; if (args->netnsid >= 0 && - nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid)) + nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid)) { + nlmsg_cancel(skb, nlh); return -EMSGSIZE; + } put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex); if (nla_put_in6_addr(skb, IFA_MULTICAST, &ifmca->mca_addr) < 0 || @@ -5016,8 +5018,10 @@ static int inet6_fill_ifacaddr(struct sk return -EMSGSIZE; if (args->netnsid >= 0 && - nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid)) + nla_put_s32(skb, IFA_TARGET_NETNSID, args->netnsid)) { + nlmsg_cancel(skb, nlh); return -EMSGSIZE; + } put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex); if (nla_put_in6_addr(skb, IFA_ANYCAST, &ifaca->aca_addr) < 0 ||
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