From: Pavel Begunkov asml.silence@gmail.com
[ upstream commit 62bb0647b14646fa6c9aa25ecdf67ad18f13523c ]
Kernel test robot reports that we test negativity of an unsigned in io_fixup_rw_res() after a recent change, which masks error codes and messes up the return value in case I/O is re-retried and failed with an error.
Fixes: 4d9cb92ca41dd ("io_uring/rw: fix short rw error handling") Reported-by: kernel test robot lkp@intel.com Signed-off-by: Pavel Begunkov asml.silence@gmail.com Link: https://lore.kernel.org/r/9754a0970af1861e7865f9014f735c70dc60bf79.166307158... Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/io_uring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2701,7 +2701,7 @@ static bool __io_complete_rw_common(stru return false; }
-static inline unsigned io_fixup_rw_res(struct io_kiocb *req, unsigned res) +static inline int io_fixup_rw_res(struct io_kiocb *req, unsigned res) { struct io_async_rw *io = req->async_data;