io_uring: Fix ->data corruption on re-enqueue

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work->data and work->list are shared in union. io_wq_assign_next() sets
->data if a req having a linked_timeout, but then io-wq may want to use
work->list, e.g. to do re-enqueue of a request, so corrupting ->data.

->data is not necessary, just remove it and extract linked_timeout
through @link_list.

Fixes: 60cf46ae60 ("io-wq: hash dependent work")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2020-03-23 00:23:29 +03:00 • committed by Jens Axboe

parent f2cf11492b

commit 18a542ff19

2 changed files with 5 additions and 9 deletions

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5

fs/io-wq.h

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9

fs/io_uring.c

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