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| author | Pavel Begunkov <asml.silence@gmail.com> | 2026-03-23 15:44:04 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-04-01 19:21:13 +0300 |
| commit | de6ed1b323fc50eaa3d7847274cff51055b5c498 (patch) | |
| tree | 9f97e3a9da72cd11ea706426093c2a88df28ed4a | |
| parent | 5c727ce042988df45232cfdb6599bb46116fd69c (diff) | |
| download | linux-de6ed1b323fc50eaa3d7847274cff51055b5c498.tar.xz | |
io_uring/zcrx: check ctrl op payload struct sizes
Add a build check that ctrl payloads are of the same size and don't grow
struct zcrx_ctrl.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://patch.msgid.link/af66caf9776d18e9ff880ab828eb159a6a03caf5.1774261953.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | io_uring/zcrx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index 32829775fb6b..e2e0df78dae1 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -1253,6 +1253,8 @@ int io_zcrx_ctrl(struct io_ring_ctx *ctx, void __user *arg, unsigned nr_args) struct zcrx_ctrl ctrl; struct io_zcrx_ifq *zcrx; + BUILD_BUG_ON(sizeof(ctrl.zc_export) != sizeof(ctrl.zc_flush)); + if (nr_args) return -EINVAL; if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |