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| author | Andrey Konovalov <andreyknvl@google.com> | 2023-10-06 17:18:44 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-19 15:28:36 +0200 |
| commit | c789d2c138ca575aee6ab5adead7a922686cc193 (patch) | |
| tree | 64199957d42064fdb467c8d80d4de38a7ebe8f4e /mm | |
| parent | 91d14d9961b715cea652cd417555cfc2297329a9 (diff) | |
| download | linux-c789d2c138ca575aee6ab5adead7a922686cc193.tar.gz linux-c789d2c138ca575aee6ab5adead7a922686cc193.tar.bz2 linux-c789d2c138ca575aee6ab5adead7a922686cc193.zip | |
kasan: use unchecked __memset internally
[ Upstream commit 01a5ad81637672940844052404678678a0ec8854 ]
KASAN code is supposed to use the unchecked __memset implementation when
accessing its metadata.
Change uses of memset to __memset in mm/kasan/.
Link: https://lkml.kernel.org/r/6f621966c6f52241b5aaa7220c348be90c075371.1696605143.git.andreyknvl@google.com
Fixes: 59e6e098d1c1 ("kasan: introduce kasan_complete_mode_report_info")
Fixes: 3c5c3cfb9ef4 ("kasan: support backing vmalloc space with real shadow memory")
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: kernel test robot <lkp@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Stable-dep-of: b6ea95a34cbd ("kasan: avoid sleepable page allocation from atomic context")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/kasan/report.c | 4 | ||||
| -rw-r--r-- | mm/kasan/shadow.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index ecced40e5103..465e6a53b3bf 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -538,7 +538,7 @@ void kasan_report_invalid_free(void *ptr, unsigned long ip, enum kasan_report_ty start_report(&flags, true); - memset(&info, 0, sizeof(info)); + __memset(&info, 0, sizeof(info)); info.type = type; info.access_addr = ptr; info.access_size = 0; @@ -576,7 +576,7 @@ bool kasan_report(const void *addr, size_t size, bool is_write, start_report(&irq_flags, true); - memset(&info, 0, sizeof(info)); + __memset(&info, 0, sizeof(info)); info.type = KASAN_REPORT_ACCESS; info.access_addr = addr; info.access_size = size; diff --git a/mm/kasan/shadow.c b/mm/kasan/shadow.c index dd772f9d0f08..d687f09a7ae3 100644 --- a/mm/kasan/shadow.c +++ b/mm/kasan/shadow.c @@ -324,7 +324,7 @@ static int kasan_populate_vmalloc_pte(pte_t *ptep, unsigned long addr, if (!page) return -ENOMEM; - memset((void *)page, KASAN_VMALLOC_INVALID, PAGE_SIZE); + __memset((void *)page, KASAN_VMALLOC_INVALID, PAGE_SIZE); pte = pfn_pte(PFN_DOWN(__pa(page)), PAGE_KERNEL); spin_lock(&init_mm.page_table_lock); |