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/openclose.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 io_uring/openclose.h (limited to 'io_uring/openclose.h') diff --git a/io_uring/openclose.h b/io_uring/openclose.h new file mode 100644 index 000000000..566739920 --- /dev/null +++ b/io_uring/openclose.h @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include "bpf_filter.h" + +int __io_close_fixed(struct io_ring_ctx *ctx, unsigned int issue_flags, + unsigned int offset); + +int io_openat_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); +int io_openat(struct io_kiocb *req, unsigned int issue_flags); +void io_open_cleanup(struct io_kiocb *req); +void io_openat_bpf_populate(struct io_uring_bpf_ctx *bctx, struct io_kiocb *req); + +int io_openat2_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); +int io_openat2(struct io_kiocb *req, unsigned int issue_flags); + +int io_close_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); +int io_close(struct io_kiocb *req, unsigned int issue_flags); + +int io_pipe_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); +int io_pipe(struct io_kiocb *req, unsigned int issue_flags); + +int io_install_fixed_fd_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe); +int io_install_fixed_fd(struct io_kiocb *req, unsigned int issue_flags); -- cgit v1.3.1