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ipv6: fix return value check in fib6_add()

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[ Upstream commit f950c0ecc7 ]

In case of error, the function fib6_add_1() returns ERR_PTR()
or NULL pointer. The ERR_PTR() case check is missing in fib6_add().

dpatch engine is used to generated this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wei Yongjun 2012-09-20 18:29:56 +00:00 committed by Greg Kroah-Hartman
parent d5e36b089e
commit 410eafac65
1 changed files with 4 additions and 0 deletions
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4
net/ipv6/ip6_fib.c
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@ -818,6 +818,10 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info)
offsetof(struct rt6_info, rt6i_src),
allow_create, replace_required);
if (IS_ERR(sn)) {
err = PTR_ERR(sn);
sn = NULL;
}
if (!sn) {
/* If it is failed, discard just allocated
root, and then (in st_failure) stale node