On 2/13/2018 5:18 AM, Leon Romanovsky wrote:
From: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
If remove_commit fails then the lock is left locked while the uobj still
exists. Eventually the kernel will deadlock.
lockdep detects this and says:
test/4221 is leaving the kernel with locks still held!
1 lock held by test/4221:
#0: (&ucontext->cleanup_rwsem){.+.+}, at: [<000000001e5c7523>] rdma_explicit_destroy+0x37/0x120 [ib_uverbs]
Fixes: 4da70da23e9b ("IB/core: Explicitly destroy an object while keeping uobject")
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
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