On 9/2/2016 3:40 PM, Uma Krishnan wrote:
From: "Matthew R. Ochs" <mrochs@xxxxxxxxxxxxxxxxxx>
Commit 888baf069f49 ("scsi: cxlflash: Add kref to context") introduced a
kref to the context. In particular, the detach routine was updated to use
the kref services for managing the removal and destruction of a context.
As part of this change, the tracking mechanism internal to the detach
handler was refactored. This introduced a bug that can cause the tracking
state to be lost. This can lead to a situation where exclusive access to a
context is prematurely [and unknowingly] relinquished for the executing
thread.
To remedy, only update the tracking state when the kref operation indicates
the context was removed.
Fixes: 888baf069f49 ("scsi: cxlflash: Add kref to context")
Signed-off-by: Matthew R. Ochs <mrochs@xxxxxxxxxxxxxxxxxx>
Acked-by: Uma Krishnan <ukrishn@xxxxxxxxxxxxxxxxxx>
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