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Revert "kasan: print the original fault addr when access invalid shadow"

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This reverts commit 1684909df3 which is
commit babddbfb7d upstream.

It just flat out breaks the build for KASAN builds, so revert it.  Odd.

Fixes: 1684909df3 ("kasan: print the original fault addr when access invalid shadow")
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ida71f61b6ea32f2682091407144032928891c83e
This commit is contained in:
Greg Kroah-Hartman
2023-11-03 13:28:27 +00:00
parent 2cd386b08b
commit a2eefda9e3
2 changed files with 6 additions and 4 deletions
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6
include/linux/kasan.h
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@@ -475,10 +475,10 @@ static inline void kasan_free_module_shadow(const struct vm_struct *vm) {}
#endif /* (CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS) && !CONFIG_KASAN_VMALLOC */ #endif /* (CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS) && !CONFIG_KASAN_VMALLOC */
#ifdef CONFIG_KASAN #ifdef CONFIG_KASAN_INLINE
void kasan_non_canonical_hook(unsigned long addr); void kasan_non_canonical_hook(unsigned long addr);
#else /* CONFIG_KASAN */ #else /* CONFIG_KASAN_INLINE */
static inline void kasan_non_canonical_hook(unsigned long addr) { } static inline void kasan_non_canonical_hook(unsigned long addr) { }
#endif /* CONFIG_KASAN */ #endif /* CONFIG_KASAN_INLINE */
#endif /* LINUX_KASAN_H */ #endif /* LINUX_KASAN_H */

4
mm/kasan/report.c
View File

@@ -560,8 +560,9 @@ void kasan_report_async(void)
} }
#endif /* CONFIG_KASAN_HW_TAGS */ #endif /* CONFIG_KASAN_HW_TAGS */
#ifdef CONFIG_KASAN_INLINE
/* /*
* With CONFIG_KASAN, accesses to bogus pointers (outside the high * With CONFIG_KASAN_INLINE, accesses to bogus pointers (outside the high
* canonical half of the address space) cause out-of-bounds shadow memory reads * canonical half of the address space) cause out-of-bounds shadow memory reads
* before the actual access. For addresses in the low canonical half of the * before the actual access. For addresses in the low canonical half of the
* address space, as well as most non-canonical addresses, that out-of-bounds * address space, as well as most non-canonical addresses, that out-of-bounds
@@ -597,3 +598,4 @@ void kasan_non_canonical_hook(unsigned long addr)
pr_alert("KASAN: %s in range [0x%016lx-0x%016lx]\n", bug_type, pr_alert("KASAN: %s in range [0x%016lx-0x%016lx]\n", bug_type,
orig_addr, orig_addr + KASAN_GRANULE_SIZE - 1); orig_addr, orig_addr + KASAN_GRANULE_SIZE - 1);
} }
#endif