io_uring/net: correctly handle multishot recvmsg retry setup

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[ Upstream commit deaef31bc1 ]

If we loop for multishot receive on the initial attempt, and then abort
later on to wait for more, we miss a case where we should be copying the
io_async_msghdr from the stack to stable storage. This leads to the next
retry potentially failing, if the application had the msghdr on the
stack.

Cc: stable@vger.kernel.org
Fixes: 9bb66906f2 ("io_uring: support multishot in recvmsg")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jens Axboe 2024-03-07 17:48:03 -07:00 • committed by Greg Kroah-Hartman

parent 1a6efd4c28

commit f55ecbd9a7

1 changed files with 2 additions and 1 deletions

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io_uring/net.c

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