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From: Alexander Potapenko <glider@google.com>
To: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Christoph Lameter <cl@linux.com>,
	David Rientjes <rientjes@google.com>,
	Heiko Carstens <hca@linux.ibm.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Marco Elver <elver@google.com>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Pekka Enberg <penberg@kernel.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Christian Borntraeger <borntraeger@linux.ibm.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Hyeonggon Yoo <42.hyeyoo@gmail.com>,
	kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, linux-s390@vger.kernel.org,
	linux-trace-kernel@vger.kernel.org,
	Mark Rutland <mark.rutland@arm.com>,
	Roman Gushchin <roman.gushchin@linux.dev>,
	Sven Schnelle <svens@linux.ibm.com>
Subject: Re: [PATCH v2 28/33] s390/string: Add KMSAN support
Date: Mon, 11 Dec 2023 11:49:18 +0100	[thread overview]
Message-ID: <CAG_fn=WjEV4CP2RTX1xeuG=kd9Lj5X1Tf4QCRuNW-vzDUpzBGw@mail.gmail.com> (raw)
In-Reply-To: <20231121220155.1217090-29-iii@linux.ibm.com>

On Tue, Nov 21, 2023 at 11:03 PM Ilya Leoshkevich <iii@linux.ibm.com> wrote:
>
> Add KMSAN support for the s390 implementations of the string functions.
> Do this similar to how it's already done for KASAN, except that the
> optimized memset{16,32,64}() functions need to be disabled: it's
> important for KMSAN to know that they initialized something.
>
> The way boot code is built with regard to string functions is
> problematic, since most files think it's configured with sanitizers,
> but boot/string.c doesn't. This creates various problems with the
> memset64() definitions, depending on whether the code is built with
> sanitizers or fortify. This should probably be streamlined, but in the
> meantime resolve the issues by introducing the IN_BOOT_STRING_C macro,
> similar to the existing IN_ARCH_STRING_C macro.
>
> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>

  reply	other threads:[~2023-12-11 10:50 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-21 22:00 [PATCH v2 00/33] kmsan: Enable on s390 Ilya Leoshkevich
2023-11-21 22:00 ` [PATCH v2 01/33] ftrace: Unpoison ftrace_regs in ftrace_ops_list_func() Ilya Leoshkevich
2023-11-22 23:32   ` Steven Rostedt
2023-12-08 14:16   ` Alexander Potapenko
2023-12-08 14:31     ` Steven Rostedt
2023-12-12  2:05       ` Ilya Leoshkevich
2023-11-21 22:00 ` [PATCH v2 02/33] kmsan: Make the tests compatible with kmsan.panic=1 Ilya Leoshkevich
2023-11-21 22:00 ` [PATCH v2 03/33] kmsan: Disable KMSAN when DEFERRED_STRUCT_PAGE_INIT is enabled Ilya Leoshkevich
2023-11-21 22:00 ` [PATCH v2 04/33] kmsan: Increase the maximum store size to 4096 Ilya Leoshkevich
2023-12-08 16:31   ` Alexander Potapenko
2023-11-21 22:00 ` [PATCH v2 05/33] kmsan: Fix is_bad_asm_addr() on arches with overlapping address spaces Ilya Leoshkevich
2023-12-11  9:52   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 06/33] kmsan: Fix kmsan_copy_to_user() " Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 07/33] kmsan: Remove a useless assignment from kmsan_vmap_pages_range_noflush() Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 08/33] kmsan: Remove an x86-specific #include from kmsan.h Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 09/33] kmsan: Introduce kmsan_memmove_metadata() Ilya Leoshkevich
2023-12-08 16:51   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 10/33] kmsan: Expose kmsan_get_metadata() Ilya Leoshkevich
2023-12-11 10:07   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 11/33] kmsan: Export panic_on_kmsan Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 12/33] kmsan: Allow disabling KMSAN checks for the current task Ilya Leoshkevich
2023-12-11 11:50   ` Alexander Potapenko
2023-12-13 15:01     ` Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 13/33] kmsan: Introduce memset_no_sanitize_memory() Ilya Leoshkevich
2023-12-08 13:48   ` Alexander Potapenko
2023-12-08 14:07     ` Ilya Leoshkevich
2023-12-08 15:25       ` Alexander Potapenko
2023-12-13  1:31         ` Ilya Leoshkevich
2023-12-13 11:32           ` Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 14/33] kmsan: Support SLAB_POISON Ilya Leoshkevich
2023-12-08 13:51   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 15/33] kmsan: Use ALIGN_DOWN() in kmsan_get_metadata() Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 16/33] mm: slub: Let KMSAN access metadata Ilya Leoshkevich
2023-11-30 15:26   ` Vlastimil Babka
2023-11-21 22:01 ` [PATCH v2 17/33] mm: kfence: Disable KMSAN when checking the canary Ilya Leoshkevich
2023-12-08 12:53   ` Alexander Potapenko
2023-12-08 13:55     ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 18/33] lib/string: Add KMSAN support to strlcpy() and strlcat() Ilya Leoshkevich
2023-12-08 16:50   ` Alexander Potapenko
2023-12-13  0:53     ` Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 19/33] lib/zlib: Unpoison DFLTCC output buffers Ilya Leoshkevich
2023-12-08 13:32   ` Alexander Potapenko
2023-12-08 14:14     ` Ilya Leoshkevich
2023-12-08 14:25       ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 20/33] kmsan: Accept ranges starting with 0 on s390 Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 21/33] s390: Turn off KMSAN for boot, vdso and purgatory Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 22/33] s390: Use a larger stack for KMSAN Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 23/33] s390/boot: Add the KMSAN runtime stub Ilya Leoshkevich
2023-12-08 16:56   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 24/33] s390/checksum: Add a KMSAN check Ilya Leoshkevich
2023-12-08 13:38   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 25/33] s390/cpacf: Unpoison the results of cpacf_trng() Ilya Leoshkevich
2023-12-11 10:36   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 26/33] s390/ftrace: Unpoison ftrace_regs in kprobe_ftrace_handler() Ilya Leoshkevich
2023-12-08 14:18   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 27/33] s390/mm: Define KMSAN metadata for vmalloc and modules Ilya Leoshkevich
2023-12-11 10:13   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 28/33] s390/string: Add KMSAN support Ilya Leoshkevich
2023-12-11 10:49   ` Alexander Potapenko [this message]
2023-11-21 22:01 ` [PATCH v2 29/33] s390/traps: Unpoison the kernel_stack_overflow()'s pt_regs Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 30/33] s390/uaccess: Add KMSAN support to put_user() and get_user() Ilya Leoshkevich
2023-12-11 10:46   ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 31/33] s390/unwind: Disable KMSAN checks Ilya Leoshkevich
2023-11-21 22:01 ` [PATCH v2 32/33] s390: Implement the architecture-specific kmsan functions Ilya Leoshkevich
2023-12-11 10:26   ` Alexander Potapenko
2023-12-11 10:39     ` Ilya Leoshkevich
2023-12-11 10:45       ` Alexander Potapenko
2023-11-21 22:01 ` [PATCH v2 33/33] kmsan: Enable on s390 Ilya Leoshkevich
2023-11-29  9:19   ` Alexander Potapenko
2023-11-29  9:58     ` Ilya Leoshkevich

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