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RDMA/bnxt_re: Fix lifetimes in bnxt_re_task

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A work queue cannot just rely on the ib_device not being freed, it must
hold a kref on the memory so that the BNXT_RE_FLAG_IBDEV_REGISTERED check
works.

Fixes: 1ac5a40479 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Link: https://lore.kernel.org/r/1584117207-2664-3-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Jason Gunthorpe 2020-03-13 09:33:26 -07:00
parent 3cae58047c
commit 8a6c617047
1 changed files with 2 additions and 0 deletions
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2
drivers/infiniband/hw/bnxt_re/main.c
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@ -1670,6 +1670,7 @@ static void bnxt_re_task(struct work_struct *work)
smp_mb__before_atomic();
atomic_dec(&rdev->sched_count);
exit:
put_device(&rdev->ibdev.dev);
kfree(re_work);
}
@ -1735,6 +1736,7 @@ static int bnxt_re_netdev_event(struct notifier_block *notifier,
/* Allocate for the deferred task */
re_work = kzalloc(sizeof(*re_work), GFP_ATOMIC);
if (re_work) {
get_device(&rdev->ibdev.dev);
re_work->rdev = rdev;
re_work->event = event;
re_work->vlan_dev = (real_dev == netdev ?