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| author | Pavel Begunkov <asml.silence@gmail.com> | 2025-02-10 15:21:37 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-17 09:40:36 +0100 |
| commit | a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3 (patch) | |
| tree | 051d117065815def047115d648ce6862e47498a5 /io_uring | |
| parent | 130675a21942d60cb53bfc9e39ca4833e16b1182 (diff) | |
| download | linux-a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3.tar.gz linux-a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3.tar.bz2 linux-a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3.zip | |
io_uring: fix io_req_prep_async with provided buffers
io_req_prep_async() can import provided buffers, commit the ring state
by giving up on that before, it'll be reimported later if needed.
Reported-by: Muhammad Ramdhan <ramdhan@starlabs.sg>
Reported-by: Bing-Jhong Billy Jheng <billy@starlabs.sg>
Reported-by: Jacob Soo <jacob.soo@starlabs.sg>
Fixes: c7fb19428d67d ("io_uring: add support for ring mapped supplied buffers")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/io_uring.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index c7198fbcf734..b61637dad442 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -1779,6 +1779,7 @@ int io_req_prep_async(struct io_kiocb *req) { const struct io_cold_def *cdef = &io_cold_defs[req->opcode]; const struct io_issue_def *def = &io_issue_defs[req->opcode]; + int ret; /* assign early for deferred execution for non-fixed file */ if (def->needs_file && !(req->flags & REQ_F_FIXED_FILE) && !req->file) @@ -1791,7 +1792,9 @@ int io_req_prep_async(struct io_kiocb *req) if (io_alloc_async_data(req)) return -EAGAIN; } - return cdef->prep_async(req); + ret = cdef->prep_async(req); + io_kbuf_recycle(req, 0); + return ret; } static u32 io_get_sequence(struct io_kiocb *req) |