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    Subject[PATCH 4.4 069/192] [PATCH 072/135] mpt3sas: A correction in unmap_resources
    Date
    4.4-stable review patch.  If anyone has any objections, please let me know.

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

    [ Upstream commit 5f985d88bac34e7f3b4403118eab072902a0b392 ]

    It might happen that we try to free an already freed pointer.

    Reported-by: Maurizio Lombardi <mlombard@redhat.com>
    Signed-off-by: Tomas Henzl <thenzl@redhat.com>
    Acked-by: Chaitra P B <chaitra.basappa@avagotech.com>
    Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
    Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/scsi/mpt3sas/mpt3sas_base.c | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    --- a/drivers/scsi/mpt3sas/mpt3sas_base.c
    +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
    @@ -2020,8 +2020,10 @@ mpt3sas_base_unmap_resources(struct MPT3
    _base_free_irq(ioc);
    _base_disable_msix(ioc);

    - if (ioc->msix96_vector)
    + if (ioc->msix96_vector) {
    kfree(ioc->replyPostRegisterIndex);
    + ioc->replyPostRegisterIndex = NULL;
    + }

    if (ioc->chip_phys) {
    iounmap(ioc->chip);

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