The quilt patch titled
Subject: kasan: simplify kasan_complete_mode_report_info for tag-based modes
has been removed from the -mm tree. Its filename was
kasan-simplify-kasan_complete_mode_report_info-for-tag-based-modes.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Subject: kasan: simplify kasan_complete_mode_report_info for tag-based modes
Date: Thu, 21 Dec 2023 19:35:40 +0100
memcpy the alloc/free tracks when collecting the information about a bad
access instead of copying fields one by one.
Link: https://lkml.kernel.org/r/20231221183540.168428-4-andrey.konovalov@xxxxxxxxx
Fixes: 5d4c6ac94694 ("kasan: record and report more information")
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Juntong Deng <juntong.deng@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/report_tags.c | 23 ++++-------------------
1 file changed, 4 insertions(+), 19 deletions(-)
--- a/mm/kasan/report_tags.c~kasan-simplify-kasan_complete_mode_report_info-for-tag-based-modes
+++ a/mm/kasan/report_tags.c
@@ -27,15 +27,6 @@ static const char *get_common_bug_type(s
return "invalid-access";
}
-#ifdef CONFIG_KASAN_EXTRA_INFO
-static void kasan_complete_extra_report_info(struct kasan_track *track,
- struct kasan_stack_ring_entry *entry)
-{
- track->cpu = entry->track.cpu;
- track->timestamp = entry->track.timestamp;
-}
-#endif /* CONFIG_KASAN_EXTRA_INFO */
-
void kasan_complete_mode_report_info(struct kasan_report_info *info)
{
unsigned long flags;
@@ -80,11 +71,8 @@ void kasan_complete_mode_report_info(str
if (free_found)
break;
- info->free_track.pid = entry->track.pid;
- info->free_track.stack = entry->track.stack;
-#ifdef CONFIG_KASAN_EXTRA_INFO
- kasan_complete_extra_report_info(&info->free_track, entry);
-#endif /* CONFIG_KASAN_EXTRA_INFO */
+ memcpy(&info->free_track, &entry->track,
+ sizeof(info->free_track));
free_found = true;
/*
@@ -98,11 +86,8 @@ void kasan_complete_mode_report_info(str
if (alloc_found)
break;
- info->alloc_track.pid = entry->track.pid;
- info->alloc_track.stack = entry->track.stack;
-#ifdef CONFIG_KASAN_EXTRA_INFO
- kasan_complete_extra_report_info(&info->alloc_track, entry);
-#endif /* CONFIG_KASAN_EXTRA_INFO */
+ memcpy(&info->alloc_track, &entry->track,
+ sizeof(info->alloc_track));
alloc_found = true;
/*
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are
kasan-stop-leaking-stack-trace-handles.patch
