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 --- drivers/ras/debugfs.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 drivers/ras/debugfs.h (limited to 'drivers/ras/debugfs.h') diff --git a/drivers/ras/debugfs.h b/drivers/ras/debugfs.h new file mode 100644 index 000000000..5a2f48439 --- /dev/null +++ b/drivers/ras/debugfs.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __RAS_DEBUGFS_H__ +#define __RAS_DEBUGFS_H__ + +#include + +#if IS_ENABLED(CONFIG_DEBUG_FS) +struct dentry *ras_get_debugfs_root(void); +#else +static inline struct dentry *ras_get_debugfs_root(void) { return NULL; } +#endif /* DEBUG_FS */ + +#endif /* __RAS_DEBUGFS_H__ */ -- cgit v1.3.1