io_uring: zero ref_node after killing it

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After a rsrc/files reference node's refs are killed, it must never be
used. And that's how it works, it either assigns a new node or kills the
whole data table.

Let's explicitly NULL it, that shouldn't be necessary, but if something
would go wrong I'd rather catch a NULL dereference to using a dangling
pointer.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-02-20 18:03:47 +00:00 • committed by Jens Axboe

parent 99a1008164

commit e6cb007c45

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fs/io_uring.c

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