From 2c9fb1fd1dd0b17cf8f48935a9c3ecea066f10e8 Mon Sep 17 00:00:00 2001 From: Andrey Konovalov Date: Mon, 5 Sep 2022 23:05:37 +0200 Subject: kasan: use virt_addr_valid in kasan_addr_to_page/slab Instead of open-coding the validity checks for addr in kasan_addr_to_page/slab(), use the virt_addr_valid() helper. Link: https://lkml.kernel.org/r/c22a4850d74d7430f8a6c08216fd55c2860a2b9e.1662411799.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov Reviewed-by: Marco Elver Cc: Alexander Potapenko Cc: Andrey Ryabinin Cc: Dmitry Vyukov Cc: Evgenii Stepanov Cc: Peter Collingbourne Signed-off-by: Andrew Morton --- mm/kasan/report.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'mm/kasan') diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 83f420a28c0b..570f9419b90c 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -208,14 +208,14 @@ static void print_track(struct kasan_track *track, const char *prefix) struct page *kasan_addr_to_page(const void *addr) { - if ((addr >= (void *)PAGE_OFFSET) && (addr < high_memory)) + if (virt_addr_valid(addr)) return virt_to_head_page(addr); return NULL; } struct slab *kasan_addr_to_slab(const void *addr) { - if ((addr >= (void *)PAGE_OFFSET) && (addr < high_memory)) + if (virt_addr_valid(addr)) return virt_to_slab(addr); return NULL; } -- cgit v1.2.3