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 --- fs/dlm/ast.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 fs/dlm/ast.h (limited to 'fs/dlm/ast.h') diff --git a/fs/dlm/ast.h b/fs/dlm/ast.h new file mode 100644 index 000000000..e2b86845d --- /dev/null +++ b/fs/dlm/ast.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/****************************************************************************** +******************************************************************************* +** +** Copyright (C) 2005-2010 Red Hat, Inc. All rights reserved. +** +** +******************************************************************************* +******************************************************************************/ + +#ifndef __ASTD_DOT_H__ +#define __ASTD_DOT_H__ + +bool dlm_may_skip_callback(struct dlm_lkb *lkb, uint32_t flags, int mode, + int status, uint32_t sbflags, int *copy_lvb); +int dlm_get_cb(struct dlm_lkb *lkb, uint32_t flags, int mode, + int status, uint32_t sbflags, + struct dlm_callback **cb); +void dlm_add_cb(struct dlm_lkb *lkb, uint32_t flags, int mode, int status, + uint32_t sbflags); + +int dlm_callback_start(struct dlm_ls *ls); +void dlm_callback_stop(struct dlm_ls *ls); +void dlm_callback_suspend(struct dlm_ls *ls); +void dlm_callback_resume(struct dlm_ls *ls); + +#endif + + -- cgit v1.3.1