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| author | Pavel Begunkov <asml.silence@gmail.com> | 2024-03-06 19:02:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-03 16:32:15 +0300 |
| commit | d6b6e94e1128306f5e80a8baf1feda47421e91f3 (patch) | |
| tree | 4edc95f5b29c423d62b82c1be7d0e6cb63a83f97 /io_uring | |
| parent | 6afa86eb39ef6181c3a3cb8fb1206b4707e0f02e (diff) | |
| download | linux-d6b6e94e1128306f5e80a8baf1feda47421e91f3.tar.xz | |
io_uring: fix mshot read defer taskrun cqe posting
[ Upstream commit 70581dcd0601a09f134f23268e3374e15d736824 ]
We can't post CQEs from io-wq with DEFER_TASKRUN set, normal completions
are handled but aux should be explicitly disallowed by opcode handlers.
Cc: stable@vger.kernel.org
Fixes: fc68fcda04910 ("io_uring/rw: add support for IORING_OP_READ_MULTISHOT")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/6fb7cba6f5366da25f4d3eb95273f062309d97fa.1709740837.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/rw.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index d5e79d9bdc71..8756e367acd9 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -932,6 +932,8 @@ int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags) */ if (!file_can_poll(req->file)) return -EBADFD; + if (issue_flags & IO_URING_F_IOWQ) + return -EAGAIN; ret = __io_read(req, issue_flags); |