From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A1786D1D6 for ; Thu, 14 Dec 2023 22:43:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="1P2r4xdr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D3660C433C8; Thu, 14 Dec 2023 22:43:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1702593827; bh=nE0PaTvN9faawp+4qR+shijRdZMnVVhqlNLYks2eQHg=; h=Date:To:From:Subject:From; b=1P2r4xdrwFb0xD16K3UUXeE6gotuECSEzAvAnKDxsnGcukpHsY+bzz+gvtsqZaQXA 3d0M14VzUYkwT/uCMKJCKVyTF5oRE4sYSR9GKHWl8pvrVaoK2hOIeShseelRgZUBoj cWPzfPF8cz/0/rk9GG+1nLwHNkdBxOAGFFyE1cGY= Date: Thu, 14 Dec 2023 14:43:47 -0800 To: mm-commits@vger.kernel.org,vbabka@suse.cz,svens@linux.ibm.com,rostedt@goodmis.org,roman.gushchin@linux.dev,rientjes@google.com,penberg@kernel.org,mhiramat@kernel.org,mark.rutland@arm.com,iamjoonsoo.kim@lge.com,hca@linux.ibm.com,gor@linux.ibm.com,glider@google.com,elver@google.com,dvyukov@google.com,cl@linux.com,borntraeger@linux.ibm.com,agordeev@linux.ibm.com,42.hyeyoo@gmail.com,iii@linux.ibm.com,akpm@linux-foundation.org From: Andrew Morton Subject: + s390-turn-off-kmsan-for-boot-vdso-and-purgatory.patch added to mm-unstable branch Message-Id: <20231214224347.D3660C433C8@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: s390: turn off KMSAN for boot, vdso and purgatory has been added to the -mm mm-unstable branch. Its filename is s390-turn-off-kmsan-for-boot-vdso-and-purgatory.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/s390-turn-off-kmsan-for-boot-vdso-and-purgatory.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** 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 and is updated there every 2-3 working days ------------------------------------------------------ From: Ilya Leoshkevich Subject: s390: turn off KMSAN for boot, vdso and purgatory Date: Thu, 14 Dec 2023 00:24:39 +0100 All other sanitizers are disabled for these components as well. While at it, add a comment to boot and purgatory. Link: https://lkml.kernel.org/r/20231213233605.661251-20-iii@linux.ibm.com Signed-off-by: Ilya Leoshkevich Reviewed-by: Alexander Gordeev Reviewed-by: Alexander Potapenko Cc: Christian Borntraeger Cc: Christoph Lameter Cc: David Rientjes Cc: Dmitry Vyukov Cc: Heiko Carstens Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Joonsoo Kim Cc: Marco Elver Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Pekka Enberg Cc: Roman Gushchin Cc: Steven Rostedt (Google) Cc: Sven Schnelle Cc: Vasily Gorbik Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- arch/s390/boot/Makefile | 2 ++ arch/s390/kernel/vdso32/Makefile | 3 ++- arch/s390/kernel/vdso64/Makefile | 3 ++- arch/s390/purgatory/Makefile | 2 ++ 4 files changed, 8 insertions(+), 2 deletions(-) --- a/arch/s390/boot/Makefile~s390-turn-off-kmsan-for-boot-vdso-and-purgatory +++ a/arch/s390/boot/Makefile @@ -3,11 +3,13 @@ # Makefile for the linux s390-specific parts of the memory manager. # +# Tooling runtimes are unavailable and cannot be linked for early boot code KCOV_INSTRUMENT := n GCOV_PROFILE := n UBSAN_SANITIZE := n KASAN_SANITIZE := n KCSAN_SANITIZE := n +KMSAN_SANITIZE := n KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR) KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) --- a/arch/s390/kernel/vdso32/Makefile~s390-turn-off-kmsan-for-boot-vdso-and-purgatory +++ a/arch/s390/kernel/vdso32/Makefile @@ -32,11 +32,12 @@ obj-y += vdso32_wrapper.o targets += vdso32.lds CPPFLAGS_vdso32.lds += -P -C -U$(ARCH) -# Disable gcov profiling, ubsan and kasan for VDSO code +# Disable gcov profiling, ubsan, kasan and kmsan for VDSO code GCOV_PROFILE := n UBSAN_SANITIZE := n KASAN_SANITIZE := n KCSAN_SANITIZE := n +KMSAN_SANITIZE := n # Force dependency (incbin is bad) $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so --- a/arch/s390/kernel/vdso64/Makefile~s390-turn-off-kmsan-for-boot-vdso-and-purgatory +++ a/arch/s390/kernel/vdso64/Makefile @@ -36,11 +36,12 @@ obj-y += vdso64_wrapper.o targets += vdso64.lds CPPFLAGS_vdso64.lds += -P -C -U$(ARCH) -# Disable gcov profiling, ubsan and kasan for VDSO code +# Disable gcov profiling, ubsan, kasan and kmsan for VDSO code GCOV_PROFILE := n UBSAN_SANITIZE := n KASAN_SANITIZE := n KCSAN_SANITIZE := n +KMSAN_SANITIZE := n # Force dependency (incbin is bad) $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so --- a/arch/s390/purgatory/Makefile~s390-turn-off-kmsan-for-boot-vdso-and-purgatory +++ a/arch/s390/purgatory/Makefile @@ -15,11 +15,13 @@ CFLAGS_sha256.o := -D__DISABLE_EXPORTS - $(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE $(call if_changed_rule,as_o_S) +# Tooling runtimes are unavailable and cannot be linked for purgatory code KCOV_INSTRUMENT := n GCOV_PROFILE := n UBSAN_SANITIZE := n KASAN_SANITIZE := n KCSAN_SANITIZE := n +KMSAN_SANITIZE := n KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare _ Patches currently in -mm which might be from iii@linux.ibm.com are ftrace-unpoison-ftrace_regs-in-ftrace_ops_list_func.patch kmsan-make-the-tests-compatible-with-kmsanpanic=1.patch kmsan-disable-kmsan-when-deferred_struct_page_init-is-enabled.patch kmsan-increase-the-maximum-store-size-to-4096.patch kmsan-fix-is_bad_asm_addr-on-arches-with-overlapping-address-spaces.patch kmsan-fix-kmsan_copy_to_user-on-arches-with-overlapping-address-spaces.patch kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch kmsan-remove-an-x86-specific-include-from-kmsanh.patch kmsan-expose-kmsan_get_metadata.patch kmsan-export-panic_on_kmsan.patch kmsan-allow-disabling-kmsan-checks-for-the-current-task.patch kmsan-support-slab_poison.patch kmsan-use-align_down-in-kmsan_get_metadata.patch mm-slub-let-kmsan-access-metadata.patch mm-slub-unpoison-the-memchr_inv-return-value.patch mm-kfence-disable-kmsan-when-checking-the-canary.patch lib-zlib-unpoison-dfltcc-output-buffers.patch kmsan-accept-ranges-starting-with-0-on-s390.patch s390-turn-off-kmsan-for-boot-vdso-and-purgatory.patch s390-use-a-larger-stack-for-kmsan.patch s390-boot-add-the-kmsan-runtime-stub.patch s390-checksum-add-a-kmsan-check.patch s390-cpacf-unpoison-the-results-of-cpacf_trng.patch s390-cpumf-unpoison-stcctm-output-buffer.patch s390-diag-unpoison-diag224-output-buffer.patch s390-ftrace-unpoison-ftrace_regs-in-kprobe_ftrace_handler.patch s390-irqflags-do-not-instrument-arch_local_irq_-with-kmsan.patch s390-mm-define-kmsan-metadata-for-vmalloc-and-modules.patch s390-string-add-kmsan-support.patch s390-traps-unpoison-the-kernel_stack_overflows-pt_regs.patch s390-uaccess-add-kmsan-support-to-put_user-and-get_user.patch s390-unwind-disable-kmsan-checks.patch s390-implement-the-architecture-specific-kmsan-functions.patch kmsan-enable-on-s390.patch