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    Subject[PATCH 4.14 399/496] cxgb4: Fix queue free path of ULD drivers
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Arjun Vynipadath <arjun@chelsio.com>

    [ Upstream commit d7cb44496a9bb458632cb3c18acb08949c210448 ]

    Setting sge_uld_rxq_info to NULL in free_queues_uld().
    We are referencing sge_uld_rxq_info in cxgb_up(). This
    will fix a panic when interface is brought up after a
    ULDq creation failure.

    Fixes: 94cdb8bb993a (cxgb4: Add support for dynamic allocation
    of resources for ULD)
    Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
    Signed-off-by: Casey Leedom <leedom@chelsio.com>
    Signed-off-by: Ganesh Goudhar <ganeshgr@chelsio.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
    +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
    @@ -342,6 +342,7 @@ static void free_queues_uld(struct adapt
    {
    struct sge_uld_rxq_info *rxq_info = adap->sge.uld_rxq_info[uld_type];

    + adap->sge.uld_rxq_info[uld_type] = NULL;
    kfree(rxq_info->rspq_id);
    kfree(rxq_info->uldrxq);
    kfree(rxq_info);

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