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/bpf-ops.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 io_uring/bpf-ops.h (limited to 'io_uring/bpf-ops.h') diff --git a/io_uring/bpf-ops.h b/io_uring/bpf-ops.h new file mode 100644 index 000000000..0b6d78949 --- /dev/null +++ b/io_uring/bpf-ops.h @@ -0,0 +1,28 @@ +// SPDX-License-Identifier: GPL-2.0 +#ifndef IOU_BPF_OPS_H +#define IOU_BPF_OPS_H + +#include + +enum { + IOU_REGION_MEM, + IOU_REGION_CQ, + IOU_REGION_SQ, +}; + +struct io_uring_bpf_ops { + int (*loop_step)(struct iou_ctx *, struct iou_loop_params *lp); + + __u32 ring_fd; + void *priv; +}; + +#ifdef CONFIG_IO_URING_BPF_OPS +void io_unregister_bpf_ops(struct io_ring_ctx *ctx); +#else +static inline void io_unregister_bpf_ops(struct io_ring_ctx *ctx) +{ +} +#endif + +#endif /* IOU_BPF_OPS_H */ -- cgit v1.3.1