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| author | Jens Axboe <axboe@kernel.dk> | 2024-08-30 10:45:54 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-08-30 10:45:54 -0600 |
| commit | f274495aea7b15225b3d83837121b22ef96e560c (patch) | |
| tree | 6e1cb0d538867ae422138f9866a9ddc65eb811a0 /io_uring | |
| parent | 1c47c0d6014c832ad8e2ba04fc2c5b7070d999f7 (diff) | |
| download | linux-stable-f274495aea7b15225b3d83837121b22ef96e560c.tar.gz linux-stable-f274495aea7b15225b3d83837121b22ef96e560c.tar.bz2 linux-stable-f274495aea7b15225b3d83837121b22ef96e560c.zip | |
io_uring/kbuf: return correct iovec count from classic buffer peek
io_provided_buffers_select() returns 0 to indicate success, but it should
be returning 1 to indicate that 1 vec was mapped. This causes peeking
to fail with classic provided buffers, and while that's not a use case
that anyone should use, it should still work correctly.
The end result is that no buffer will be selected, and hence a completion
with '0' as the result will be posted, without a buffer attached.
Fixes: 35c8711c8fc4 ("io_uring/kbuf: add helpers for getting/peeking multiple buffers")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/kbuf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index 1af2bd56af44..bdfa30b38321 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -129,7 +129,7 @@ static int io_provided_buffers_select(struct io_kiocb *req, size_t *len, iov[0].iov_base = buf; iov[0].iov_len = *len; - return 0; + return 1; } static struct io_uring_buf *io_ring_head_to_buf(struct io_uring_buf_ring *br, |