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RDMA/vmw_pvrdma: Avoid use after free due to QP/CQ/SRQ destroy

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The use of wait queues in vmw_pvrdma for handling concurrent
access to a resource leaves a race condition which can cause a use
after free bug.

Fix this by using the pattern from other drivers, complete() protected by
dec_and_test to ensure complete() is called only once.

Fixes: 29c8d9eba5 ("IB: Add vmw_pvrdma driver")
Signed-off-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Bryan Tan 2017-12-20 09:51:40 -08:00 • committed by Jason Gunthorpe
commit e3524b269e
5 changed files with 22 additions and 22 deletions
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