io_uring/kbuf: check for buffer list readiness after NULL check
authorJens Axboe <axboe@kernel.dk>
Tue, 5 Dec 2023 14:02:13 +0000 (07:02 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 13 Dec 2023 17:45:17 +0000 (18:45 +0100)
commit7e6621b99d20f26f7355a7f266bebd6f5ce88693
tree3e11ad80ffe0151f90e1c4adbbe57c8f64396fc7
parentb2173a8b64507f5be03c195614a491778e6963cc
io_uring/kbuf: check for buffer list readiness after NULL check

[ Upstream commit 9865346b7e8374b57f1c3ccacdc77846c6352ff4 ]

Move the buffer list 'is_ready' check below the validity check for
the buffer list for a given group.

Fixes: 5cf4f52e6d8a ("io_uring: free io_buffer_list entries via RCU")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
io_uring/kbuf.c