io_uring: use WRITE_ONCE for user shared memory

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[ Upstream commit 93e197e524 ]

IORING_SETUP_NO_MMAP rings remain user accessible even before the ctx
setup is finalised, so use WRITE_ONCE consistently when initialising
rings.

Fixes: 03d89a2de2 ("io_uring: support for user allocated memory for rings/sqes")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Pavel Begunkov 2025-11-06 12:58:19 +00:00 • committed by Greg Kroah-Hartman

parent b9422f46d9

commit e2a1f510e5

1 changed files with 6 additions and 4 deletions

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io_uring/io_uring.c

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