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(parent: 0e73b5f) | patch
io_uring: fix races with buffer table unregister
authorPavel Begunkov <asml.silence@gmail.com>
Mon, 13 Jun 2022 05:30:06 +0000 (06:30 +0100)
committerPavel Begunkov <asml.silence@gmail.com>
Mon, 13 Jun 2022 08:53:27 +0000 (09:53 +0100)
commit02f139bab1e911c37389cb1a7be59a1df25f9469
treeec59fcf6033dbbd60c4856d5e49469fb52a8cc28tree | snapshot
parent0e73b5f47f09d8cbadc6086aec7afc078e166782commit | diff
io_uring: fix races with buffer table unregister

Fixed buffer table quiesce might unlock ->uring_lock, potentially
letting new requests to be submitted, don't allow those requests to
use the table as they will race with unregistration.

Reported-and-tested-by: van fantasy <g1042620637@gmail.com>
Fixes: 5aa3d4ba552fc3 ("io_uring: implement fixed buffers registration similar to fixed files")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
fs/io_uring.c diff | blob | history
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