From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- io_uring/eventfd.h | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 io_uring/eventfd.h (limited to 'io_uring/eventfd.h') diff --git a/io_uring/eventfd.h b/io_uring/eventfd.h new file mode 100644 index 000000000..400eda4a4 --- /dev/null +++ b/io_uring/eventfd.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +struct io_ring_ctx; +int io_eventfd_register(struct io_ring_ctx *ctx, void __user *arg, + unsigned int eventfd_async); +int io_eventfd_unregister(struct io_ring_ctx *ctx); + +void io_eventfd_signal(struct io_ring_ctx *ctx, bool cqe_event); -- cgit v1.3.1