From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org, vbabka@suse.cz, osalvador@suse.de,
glider@google.com, eugenis@google.com, elver@google.com,
dvyukov@google.com, andreyknvl@gmail.com, andreyknvl@google.com,
akpm@linux-foundation.org
Subject: + kasan-check-object_size-in-kasan_complete_mode_report_info.patch added to mm-unstable branch
Date: Wed, 13 Sep 2023 12:29:15 -0700 [thread overview]
Message-ID: <20230913192916.4C549C433C9@smtp.kernel.org> (raw)
The patch titled
Subject: kasan: check object_size in kasan_complete_mode_report_info
has been added to the -mm mm-unstable branch. Its filename is
kasan-check-object_size-in-kasan_complete_mode_report_info.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kasan-check-object_size-in-kasan_complete_mode_report_info.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Andrey Konovalov <andreyknvl@google.com>
Subject: kasan: check object_size in kasan_complete_mode_report_info
Date: Wed, 13 Sep 2023 19:14:43 +0200
Check the object size when looking up entries in the stack ring.
If the size of the object for which a report is being printed does not
match the size of the object for which a stack trace has been saved in the
stack ring, the saved stack trace is irrelevant.
Link: https://lkml.kernel.org/r/293d73bcd89932bc026263d3df8ee281ad3f621f.1694625260.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/kasan/report_tags.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/mm/kasan/report_tags.c~kasan-check-object_size-in-kasan_complete_mode_report_info
+++ a/mm/kasan/report_tags.c
@@ -58,7 +58,8 @@ void kasan_complete_mode_report_info(str
entry = &stack_ring.entries[i % stack_ring.size];
if (kasan_reset_tag(entry->ptr) != info->object ||
- get_tag(entry->ptr) != get_tag(info->access_addr))
+ get_tag(entry->ptr) != get_tag(info->access_addr) ||
+ info->cache->object_size != entry->size)
continue;
if (entry->is_free) {
_
Patches currently in -mm which might be from andreyknvl@google.com are
lib-stackdepot-check-disabled-flag-when-fetching.patch
lib-stackdepot-simplify-__stack_depot_save.patch
lib-stackdepot-drop-valid-bit-from-handles.patch
lib-stackdepot-add-depot_fetch_stack-helper.patch
lib-stackdepot-use-fixed-sized-slots-for-stack-records.patch
lib-stackdepot-fix-and-clean-up-atomic-annotations.patch
lib-stackdepot-rework-helpers-for-depot_alloc_stack.patch
lib-stackdepot-rename-next_pool_required-to-new_pool_required.patch
lib-stackdepot-store-next-pool-pointer-in-new_pool.patch
lib-stackdepot-store-free-stack-records-in-a-freelist.patch
lib-stackdepot-use-read-write-lock.patch
lib-stackdepot-use-list_head-for-stack-record-links.patch
kmsan-use-stack_depot_save-instead-of-__stack_depot_save.patch
lib-stackdepot-kasan-add-flags-to-__stack_depot_save-and-rename.patch
lib-stackdepot-add-refcount-for-records.patch
lib-stackdepot-allow-users-to-evict-stack-traces.patch
kasan-remove-atomic-accesses-to-stack-ring-entries.patch
kasan-check-object_size-in-kasan_complete_mode_report_info.patch
kasan-use-stack_depot_put-for-tag-based-modes.patch
next reply other threads:[~2023-09-13 19:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-13 19:29 Andrew Morton [this message]
2023-11-20 18:04 + kasan-check-object_size-in-kasan_complete_mode_report_info.patch added to mm-unstable branch Andrew Morton
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