The quilt patch titled
Subject: mm-kasan-kmsan-copy_from-to_kernel_nofault-fix
has been removed from the -mm tree. Its filename was
mm-kasan-kmsan-copy_from-to_kernel_nofault-fix.patch
This patch was dropped because it was folded into mm-kasan-kmsan-copy_from-to_kernel_nofault.patch
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-kasan-kmsan-copy_from-to_kernel_nofault-fix
Date: Tue Oct 15 04:53:38 PM PDT 2024
fix comment layout, per checkpatch
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Sabyrzhan Tasbolatov <snovitoll@xxxxxxxxx>
Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/kasan_test_c.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
--- a/mm/kasan/kasan_test_c.c~mm-kasan-kmsan-copy_from-to_kernel_nofault-fix
+++ a/mm/kasan/kasan_test_c.c
@@ -1934,8 +1934,10 @@ static void copy_to_kernel_nofault_oob(s
char buf[128];
size_t size = sizeof(buf);
- /* This test currently fails with the HW_TAGS mode.
- * The reason is unknown and needs to be investigated. */
+ /*
+ * This test currently fails with the HW_TAGS mode. The reason is
+ * unknown and needs to be investigated.
+ */
KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_HW_TAGS);
ptr = kmalloc(size - KASAN_GRANULE_SIZE, GFP_KERNEL);
@@ -1943,16 +1945,16 @@ static void copy_to_kernel_nofault_oob(s
OPTIMIZER_HIDE_VAR(ptr);
/*
- * We test copy_to_kernel_nofault() to detect corrupted memory that is
- * being written into the kernel. In contrast, copy_from_kernel_nofault()
- * is primarily used in kernel helper functions where the source address
- * might be random or uninitialized. Applying KASAN instrumentation to
- * copy_from_kernel_nofault() could lead to false positives.
- * By focusing KASAN checks only on copy_to_kernel_nofault(),
- * we ensure that only valid memory is written to the kernel,
- * minimizing the risk of kernel corruption while avoiding
- * false positives in the reverse case.
- */
+ * We test copy_to_kernel_nofault() to detect corrupted memory that is
+ * being written into the kernel. In contrast,
+ * copy_from_kernel_nofault() is primarily used in kernel helper
+ * functions where the source address might be random or uninitialized.
+ * Applying KASAN instrumentation to copy_from_kernel_nofault() could
+ * lead to false positives. By focusing KASAN checks only on
+ * copy_to_kernel_nofault(), we ensure that only valid memory is
+ * written to the kernel, minimizing the risk of kernel corruption
+ * while avoiding false positives in the reverse case.
+ */
KUNIT_EXPECT_KASAN_FAIL(test,
copy_to_kernel_nofault(&buf[0], ptr, size));
KUNIT_EXPECT_KASAN_FAIL(test,
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-page_alloc-keep-track-of-free-highatomic-fix.patch
mm-refactor-arch_calc_vm_flag_bits-and-arm64-mte-handling-fix.patch
mm-fix-__wp_page_copy_user-fallback-path-for-remote-mm-fix.patch
mm-memoryc-remove-stray-newline-at-top-of-file.patch
mm-kasan-kmsan-copy_from-to_kernel_nofault.patch
alloc_tag-load-module-tags-into-separate-contiguous-memory-fix-fix.patch
tools-mm-free-the-allocated-memory-fix.patch
memcg-v1-no-need-for-memcg-locking-for-mglru-fix.patch
mm-vma-the-pgoff-is-correct-if-can_merge_right-fix.patch
memcg-workingset-remove-folio_memcg_rcu-usage-fix.patch
bootmem-stop-using-page-index-fix.patch
vma-detect-infinite-loop-in-vma-tree-fix.patch
maple_tree-add-a-test-checking-storing-null-fix.patch
fs-proc-kcorec-fix-coccinelle-reported-error-instances-fix.patch
