[PATCH 4/8] io_uring/rsrc: add lockdep checks

Pavel Begunkov
2023-04-11T11:13:15Z

Add a lockdep chek to make sure that file and buffer updates hold
->uring_lock.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
io_uring/rsrc.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index 603a783a0383..24e4e2109549 100644
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c
@@ -534,6 +534,8 @@ static int __io_register_rsrc_update(struct io_ring_ctx *ctx, unsigned type,
__u32 tmp;
int err;

+ lockdep_assert_held(&ctx->uring_lock);
+
if (check_add_overflow(up->offset, nr_args, &tmp))
return -EOVERFLOW;
err = io_rsrc_node_switch_start(ctx);
--
2.40.0