On Tue, 19 Oct 2021 at 14:04, Kuan-Ying Lee <Kuan-Ying.Lee@xxxxxxxxxxxx> wrote: > > There are multiple kasan modes. It make sense that we add some messages > to know which kasan mode is when booting up. see [1]. > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=212195 [1] > Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@xxxxxxxxxxxx> Looks good, however, you need to rebase to -next because of "kasan: Extend KASAN mode kernel parameter"... > --- > arch/arm64/mm/kasan_init.c | 2 +- > mm/kasan/hw_tags.c | 4 +++- > mm/kasan/sw_tags.c | 2 +- > 3 files changed, 5 insertions(+), 3 deletions(-) > > diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c > index 61b52a92b8b6..b4e78beac285 100644 > --- a/arch/arm64/mm/kasan_init.c > +++ b/arch/arm64/mm/kasan_init.c > @@ -293,7 +293,7 @@ void __init kasan_init(void) > kasan_init_depth(); > #if defined(CONFIG_KASAN_GENERIC) > /* CONFIG_KASAN_SW_TAGS also requires kasan_init_sw_tags(). */ > - pr_info("KernelAddressSanitizer initialized\n"); > + pr_info("KernelAddressSanitizer initialized (generic)\n"); > #endif > } > > diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c > index 05d1e9460e2e..3e28ecbe1d8f 100644 > --- a/mm/kasan/hw_tags.c > +++ b/mm/kasan/hw_tags.c > @@ -168,7 +168,9 @@ void __init kasan_init_hw_tags(void) > break; > } > > - pr_info("KernelAddressSanitizer initialized\n"); > + pr_info("KernelAddressSanitizer initialized (hw-tags, mode=%s, stacktrace=%s)\n", > + kasan_flag_async ? "async" : "sync", ... which means this will have a 3rd option "asymm". > + kasan_stack_collection_enabled() ? "on" : "off"); > } > > void kasan_alloc_pages(struct page *page, unsigned int order, gfp_t flags) > diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c > index bd3f540feb47..77f13f391b57 100644 > --- a/mm/kasan/sw_tags.c > +++ b/mm/kasan/sw_tags.c > @@ -42,7 +42,7 @@ void __init kasan_init_sw_tags(void) > for_each_possible_cpu(cpu) > per_cpu(prng_state, cpu) = (u32)get_cycles(); > > - pr_info("KernelAddressSanitizer initialized\n"); > + pr_info("KernelAddressSanitizer initialized (sw-tags)\n"); > } > > /* > -- > 2.18.0
