6.13-stable review patch. If anyone has any objections, please let me know.
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From: Jens Axboe axboe@kernel.dk
[ Upstream commit eaf72f7b414f5944585e7dee9c915c7f8f7f6344 ]
A few spots in uring_cmd assume that the SQEs copied are always at the start of the structure, and hence mix req->async_data and the struct itself.
Clean that up and use the proper indices.
Signed-off-by: Jens Axboe axboe@kernel.dk Stable-dep-of: e663da62ba86 ("io_uring/uring_cmd: switch sqe to async_data on EAGAIN") Signed-off-by: Sasha Levin sashal@kernel.org --- io_uring/uring_cmd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index f43adcc16cf65..caed143fb156d 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -201,8 +201,8 @@ static int io_uring_cmd_prep_setup(struct io_kiocb *req, return 0; }
- memcpy(req->async_data, sqe, uring_sqe_size(req->ctx)); - ioucmd->sqe = req->async_data; + memcpy(cache->sqes, sqe, uring_sqe_size(req->ctx)); + ioucmd->sqe = cache->sqes; return 0; }
@@ -269,7 +269,7 @@ int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags) struct io_uring_cmd_data *cache = req->async_data;
if (ioucmd->sqe != (void *) cache) - memcpy(cache, ioucmd->sqe, uring_sqe_size(req->ctx)); + memcpy(cache->sqes, ioucmd->sqe, uring_sqe_size(req->ctx)); return -EAGAIN; } else if (ret == -EIOCBQUEUED) { return -EIOCBQUEUED;