The patch titled
Subject: kasan: unify report headers
has been added to the -mm tree. Its filename is
kasan-unify-report-headers.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kasan-unify-report-headers.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kasan-unify-report-headers.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Subject: kasan: unify report headers
Unify KASAN report header format for different kinds of bad memory
accesses. Makes the code simpler.
Link: http://lkml.kernel.org/r/20170302134851.101218-3-andreyknvl@xxxxxxxxxx
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Acked-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/report.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)
diff -puN mm/kasan/report.c~kasan-unify-report-headers mm/kasan/report.c
--- a/mm/kasan/report.c~kasan-unify-report-headers
+++ a/mm/kasan/report.c
@@ -119,16 +119,22 @@ const char *get_wild_bug_type(struct kas
return bug_type;
}
+static const char *get_bug_type(struct kasan_access_info *info)
+{
+ if (addr_has_shadow(info))
+ return get_shadow_bug_type(info);
+ return get_wild_bug_type(info);
+}
+
static void print_error_description(struct kasan_access_info *info)
{
- const char *bug_type = get_shadow_bug_type(info);
+ const char *bug_type = get_bug_type(info);
pr_err("BUG: KASAN: %s in %pS at addr %p\n",
- bug_type, (void *)info->ip,
- info->access_addr);
+ bug_type, (void *)info->ip, info->access_addr);
pr_err("%s of size %zu by task %s/%d\n",
- info->is_write ? "Write" : "Read",
- info->access_size, current->comm, task_pid_nr(current));
+ info->is_write ? "Write" : "Read", info->access_size,
+ current->comm, task_pid_nr(current));
}
static inline bool kernel_or_module_addr(const void *addr)
@@ -295,17 +301,11 @@ static void kasan_report_error(struct ka
kasan_start_report(&flags);
+ print_error_description(info);
+
if (!addr_has_shadow(info)) {
- const char *bug_type = get_wild_bug_type(info);
- pr_err("BUG: KASAN: %s on address %p\n",
- bug_type, info->access_addr);
- pr_err("%s of size %zu by task %s/%d\n",
- info->is_write ? "Write" : "Read",
- info->access_size, current->comm,
- task_pid_nr(current));
dump_stack();
} else {
- print_error_description(info);
print_address_description(info);
print_shadow_for_address(info->first_bad_addr);
}
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are
kasan-introduce-helper-functions-for-determining-bug-type.patch
kasan-unify-report-headers.patch
kasan-change-allocation-and-freeing-stack-traces-headers.patch
kasan-simplify-address-description-logic.patch
kasan-change-report-header.patch
kasan-improve-slab-object-description.patch
kasan-print-page-description-after-stacks.patch
kasan-improve-double-free-report-format.patch
kasan-separate-report-parts-by-empty-lines.patch
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