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    Subject[PATCH 5.4 094/177] Revert "net/smc: fix a NULL pointer dereference"
    Date
    From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    [ Upstream commit 5369ead83f5aff223b6418c99cb1fe9a8f007363 ]

    This reverts commit e183d4e414b64711baf7a04e214b61969ca08dfa.

    Because of recent interactions with developers from @umn.edu, all
    commits from them have been recently re-reviewed to ensure if they were
    correct or not.

    Upon review, this commit was found to be incorrect for the reasons
    below, so it must be reverted. It will be fixed up "correctly" in a
    later kernel change.

    The original commit causes a memory leak and does not properly fix the
    issue it claims to fix. I will send a follow-on patch to resolve this
    properly.

    Cc: Kangjie Lu <kjlu@umn.edu>
    Cc: Ursula Braun <ubraun@linux.ibm.com>
    Cc: David S. Miller <davem@davemloft.net>
    Link: https://lore.kernel.org/r/20210503115736.2104747-17-gregkh@linuxfoundation.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    net/smc/smc_ism.c | 5 -----
    1 file changed, 5 deletions(-)

    diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
    index e89e918b88e0..2fff79db1a59 100644
    --- a/net/smc/smc_ism.c
    +++ b/net/smc/smc_ism.c
    @@ -289,11 +289,6 @@ struct smcd_dev *smcd_alloc_dev(struct device *parent, const char *name,
    INIT_LIST_HEAD(&smcd->vlan);
    smcd->event_wq = alloc_ordered_workqueue("ism_evt_wq-%s)",
    WQ_MEM_RECLAIM, name);
    - if (!smcd->event_wq) {
    - kfree(smcd->conn);
    - kfree(smcd);
    - return NULL;
    - }
    return smcd;
    }
    EXPORT_SYMBOL_GPL(smcd_alloc_dev);
    --
    2.30.2


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