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    Subject[PATCH 4.14 01/60] ah6: fix error return code in ah6_input()
    Date
    From: Zhang Changzhong <zhangchangzhong@huawei.com>

    [ Upstream commit a5ebcbdf34b65fcc07f38eaf2d60563b42619a59 ]

    Fix to return a negative error code from the error handling
    case instead of 0, as done elsewhere in this function.

    Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
    Reported-by: Hulk Robot <hulkci@huawei.com>
    Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
    Link: https://lore.kernel.org/r/1605581105-35295-1-git-send-email-zhangchangzhong@huawei.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    net/ipv6/ah6.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    --- a/net/ipv6/ah6.c
    +++ b/net/ipv6/ah6.c
    @@ -599,7 +599,8 @@ static int ah6_input(struct xfrm_state *
    memcpy(auth_data, ah->auth_data, ahp->icv_trunc_len);
    memset(ah->auth_data, 0, ahp->icv_trunc_len);

    - if (ipv6_clear_mutable_options(ip6h, hdr_len, XFRM_POLICY_IN))
    + err = ipv6_clear_mutable_options(ip6h, hdr_len, XFRM_POLICY_IN);
    + if (err)
    goto out_free;

    ip6h->priority = 0;

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