From 33a154a96e71a34a1bcca9f40da343dbbf7b38b4 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Thu, 1 Oct 2026 14:52:55 +0000 Subject: selftests/bpf: Test packet range of pointers sharing an id Add tests where two packet pointers share an id and tightening one pointer's umax from its var_off would put it less than their constant distance from the other's umax: with an index & 0x38 capped at 50, the base pointer keeps umax 50, so the pointer 8 bytes further on must keep umax 58, even though its known bits allow at most 56. These refused a valid program or accepted an out-of-bounds access before the fix: - check the advanced copy, load through the base: valid, was refused; - check the base, load the byte at base + 1 through a copy advanced by 8: was accepted; - check base + 4, load 4 bytes at base + 2 through base + 8: reads two bytes past the checked range, was accepted; - the same as the second with data_meta pointers checked against data: was accepted. These pass with and without the fix and cover nearby paths: - subtract an unknown scalar from a checked pointer and load below it (the range is kept across a new id); - reach a load through two paths whose checks cover 8 and 7 bytes after the loaded pointer; the second path must not be pruned by the first; - spill a copy of a pointer, check the pointer, fill the copy and load one byte past the checked range: the load is refused, and the copy has the range of the check. Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20261001145255.855630-2-alexei.starovoitov@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- include/sound/sof/debug.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 include/sound/sof/debug.h (limited to 'include/sound/sof/debug.h') diff --git a/include/sound/sof/debug.h b/include/sound/sof/debug.h new file mode 100644 index 000000000..8b308d7e5 --- /dev/null +++ b/include/sound/sof/debug.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * Copyright(c) 2020 Intel Corporation + * + * Author: Karol Trzcinski + */ + +#ifndef __INCLUDE_SOUND_SOF_DEBUG_H__ +#define __INCLUDE_SOUND_SOF_DEBUG_H__ + +#include + +/** ABI3.18 */ +enum sof_ipc_dbg_mem_zone { + SOF_IPC_MEM_ZONE_SYS = 0, /**< System zone */ + SOF_IPC_MEM_ZONE_SYS_RUNTIME = 1, /**< System-runtime zone */ + SOF_IPC_MEM_ZONE_RUNTIME = 2, /**< Runtime zone */ + SOF_IPC_MEM_ZONE_BUFFER = 3, /**< Buffer zone */ + SOF_IPC_MEM_ZONE_RUNTIME_SHARED = 4, /**< System runtime zone */ + SOF_IPC_MEM_ZONE_SYS_SHARED = 5, /**< System shared zone */ +}; + +/** ABI3.18 */ +struct sof_ipc_dbg_mem_usage_elem { + uint32_t zone; /**< see sof_ipc_dbg_mem_zone */ + uint32_t id; /**< heap index within zone */ + uint32_t used; /**< number of bytes used in zone */ + uint32_t free; /**< number of bytes free to use within zone */ + uint32_t reserved; /**< for future use */ +} __packed; + +/** ABI3.18 */ +struct sof_ipc_dbg_mem_usage { + struct sof_ipc_reply rhdr; /**< generic IPC reply header */ + uint32_t reserved[4]; /**< reserved for future use */ + uint32_t num_elems; /**< elems[] counter */ + struct sof_ipc_dbg_mem_usage_elem elems[]; /**< memory usage information */ +} __packed; + +#endif -- cgit v1.3.1