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a0503b8a0b
1. Move kasan_get_free_track() and kasan_set_free_info() into tags.c and combine these two functions for SW_TAGS and HW_TAGS kasan mode. 2. Move kasan_get_bug_type() to report_tags.c and make this function compatible for SW_TAGS and HW_TAGS kasan mode. Link: https://lkml.kernel.org/r/20210626100931.22794-3-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Suggested-by: Marco Elver <elver@google.com> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Nicholas Tang <nicholas.tang@mediatek.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
37 lines
830 B
C
37 lines
830 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* This file contains hardware tag-based KASAN specific error reporting code.
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*
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* Copyright (c) 2020 Google, Inc.
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* Author: Andrey Konovalov <andreyknvl@google.com>
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*/
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#include <linux/kasan.h>
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#include <linux/kernel.h>
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#include <linux/memory.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include "kasan.h"
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void *kasan_find_first_bad_addr(void *addr, size_t size)
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{
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return kasan_reset_tag(addr);
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}
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void kasan_metadata_fetch_row(char *buffer, void *row)
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{
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int i;
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for (i = 0; i < META_BYTES_PER_ROW; i++)
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buffer[i] = hw_get_mem_tag(row + i * KASAN_GRANULE_SIZE);
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}
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void kasan_print_tags(u8 addr_tag, const void *addr)
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{
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u8 memory_tag = hw_get_mem_tag((void *)addr);
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pr_err("Pointer tag: [%02x], memory tag: [%02x]\n",
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addr_tag, memory_tag);
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}
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