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-rw-r--r--io_uring/io_uring.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index fe6ef64c873e..63f6ce5e5355 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -3890,6 +3890,9 @@ static int __io_uring_register(struct io_ring_ctx *ctx, unsigned opcode,
if (WARN_ON_ONCE(percpu_ref_is_dying(&ctx->refs)))
return -ENXIO;
+ if (ctx->submitter_task && ctx->submitter_task != current)
+ return -EEXIST;
+
if (ctx->restricted) {
if (opcode >= IORING_REGISTER_LAST)
return -EINVAL;