[PATCH v3 17/39] kasan: rename print_shadow_for_address to print_memory_metadata

Andrey Konovalov
2020-09-24T22:51:51Z

This is a preparatory commit for the upcoming addition of a new hardware
tag-based (MTE-based) KASAN mode.

Hardware tag-based KASAN won't be using shadow memory, but will reuse
this function. Rename "shadow" to implementation-neutral "metadata".

No functional changes.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
Change-Id: I18397dddbed6bc6d365ddcaf063a83948e1150a5
---
mm/kasan/report.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 145b966f8f4d..9e4d539d62f4 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -250,7 +250,7 @@ static int shadow_pointer_offset(const void *row, const void *shadow)
(shadow - row) / SHADOW_BYTES_PER_BLOCK + 1;
}

-static void print_shadow_for_address(const void *addr)
+static void print_memory_metadata(const void *addr)
{
int i;
const void *shadow = kasan_mem_to_shadow(addr);
@@ -311,7 +311,7 @@ void kasan_report_invalid_free(void *object, unsigned long ip)
pr_err("\n");
print_address_description(object, tag);
pr_err("\n");
- print_shadow_for_address(object);
+ print_memory_metadata(object);
end_report(&flags);
}

@@ -347,7 +347,7 @@ static void __kasan_report(unsigned long addr, size_t size, bool is_write,
if (addr_has_metadata(untagged_addr)) {
print_address_description(untagged_addr, get_tag(tagged_addr));
pr_err("\n");
- print_shadow_for_address(info.first_bad_addr);
+ print_memory_metadata(info.first_bad_addr);
} else {
dump_stack();
}
--
2.28.0.681.g6f77f65b4e-goog