android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
This reverts commit 632c2199e5 which is
commit babddbfb7d7d70ae7f10fedd75a45d8ad75fdddf upstream.

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

Fixes: 1684909df3f4 ("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 9cba6b5683
commit bdc373d185
2 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/linux/kasan.h
View File

@ -456,10 +456,10 @@ static inline void kasan_free_shadow(const struct vm_struct *vm) {}
#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);
#else /* CONFIG_KASAN */
#else /* CONFIG_KASAN_INLINE */
static inline void kasan_non_canonical_hook(unsigned long addr) { }
#endif /* CONFIG_KASAN */
#endif /* CONFIG_KASAN_INLINE */
#endif /* LINUX_KASAN_H */

4
mm/kasan/report.c
View File

@ -434,8 +434,9 @@ bool kasan_report(unsigned long addr, size_t size, bool is_write,
return ret;
}
#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
* 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
@ -471,3 +472,4 @@ void kasan_non_canonical_hook(unsigned long addr)
pr_alert("KASAN: %s in range [0x%016lx-0x%016lx]\n", bug_type,
orig_addr, orig_addr + KASAN_GRANULE_SIZE - 1);
}
#endif