From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Alexander Gordeev <agordeev@linux.ibm.com>,
Alexander Potapenko <glider@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux.com>,
David Rientjes <rientjes@google.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>
Cc: 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>,
Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH 24/32] s390/cpacf: Unpoison the results of cpacf_trng()
Date: Wed, 15 Nov 2023 21:30:56 +0100 [thread overview]
Message-ID: <20231115203401.2495875-25-iii@linux.ibm.com> (raw)
In-Reply-To: <20231115203401.2495875-1-iii@linux.ibm.com>
Prevent KMSAN from complaining about buffers filled by cpacf_trng()
being uninitialized.
Tested-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
arch/s390/include/asm/cpacf.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h
index b378e2b57ad8..a72b92770c4b 100644
--- a/arch/s390/include/asm/cpacf.h
+++ b/arch/s390/include/asm/cpacf.h
@@ -473,6 +473,8 @@ static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len,
: [ucbuf] "+&d" (u.pair), [cbuf] "+&d" (c.pair)
: [fc] "K" (CPACF_PRNO_TRNG), [opc] "i" (CPACF_PRNO)
: "cc", "memory", "0");
+ kmsan_unpoison_memory(ucbuf, ucbuf_len);
+ kmsan_unpoison_memory(cbuf, cbuf_len);
}
/**
--
2.41.0
next prev parent reply other threads:[~2023-11-15 20:35 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-15 20:30 [PATCH 00/32] kmsan: Enable on s390 Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 01/32] ftrace: Unpoison ftrace_regs in ftrace_ops_list_func() Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 02/32] kmsan: Make the tests compatible with kmsan.panic=1 Ilya Leoshkevich
2023-11-16 9:27 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 03/32] kmsan: Disable KMSAN when DEFERRED_STRUCT_PAGE_INIT is enabled Ilya Leoshkevich
2023-11-16 9:41 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 04/32] kmsan: Increase the maximum store size to 4096 Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 05/32] kmsan: Fix is_bad_asm_addr() on arches with overlapping address spaces Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 06/32] kmsan: Fix kmsan_copy_to_user() " Ilya Leoshkevich
2023-11-16 10:13 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 07/32] kmsan: Remove a useless assignment from kmsan_vmap_pages_range_noflush() Ilya Leoshkevich
2023-11-16 10:52 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 08/32] kmsan: Remove an x86-specific #include from kmsan.h Ilya Leoshkevich
2023-11-16 9:44 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 09/32] kmsan: Introduce kmsan_memmove_metadata() Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 10/32] kmsan: Expose kmsan_get_metadata() Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 11/32] kmsan: Export panic_on_kmsan Ilya Leoshkevich
2023-11-16 9:14 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 12/32] kmsan: Allow disabling KMSAN checks for the current task Ilya Leoshkevich
2023-11-16 8:56 ` Alexander Potapenko
2023-11-16 9:17 ` Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 13/32] kmsan: Support SLAB_POISON Ilya Leoshkevich
2023-11-16 14:55 ` Alexander Potapenko
2023-11-16 15:08 ` Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 14/32] kmsan: Use ALIGN_DOWN() in kmsan_get_metadata() Ilya Leoshkevich
2023-11-16 9:54 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 15/32] mm: slub: Let KMSAN access metadata Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 16/32] mm: kfence: Disable KMSAN when checking the canary Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 17/32] lib/string: Add KMSAN support to strlcpy() and strlcat() Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 18/32] lib/zlib: Unpoison DFLTCC output buffers Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 19/32] kmsan: Accept ranges starting with 0 on s390 Ilya Leoshkevich
2023-11-16 10:33 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 20/32] s390: Turn off KMSAN for boot, vdso and purgatory Ilya Leoshkevich
2023-11-16 9:20 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 21/32] s390: Use a larger stack for KMSAN Ilya Leoshkevich
2023-11-16 9:45 ` Alexander Potapenko
2023-11-15 20:30 ` [PATCH 22/32] s390/boot: Add the KMSAN runtime stub Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 23/32] s390/checksum: Add a KMSAN check Ilya Leoshkevich
2023-11-15 20:30 ` Ilya Leoshkevich [this message]
2023-11-15 20:30 ` [PATCH 25/32] s390/ftrace: Unpoison ftrace_regs in kprobe_ftrace_handler() Ilya Leoshkevich
2023-11-15 20:30 ` [PATCH 26/32] s390/mm: Define KMSAN metadata for vmalloc and modules Ilya Leoshkevich
2023-11-16 15:03 ` Alexander Potapenko
2023-11-17 16:41 ` Alexander Gordeev
2023-11-15 20:30 ` [PATCH 27/32] s390/string: Add KMSAN support Ilya Leoshkevich
2023-11-16 21:42 ` kernel test robot
2023-11-15 20:31 ` [PATCH 28/32] s390/traps: Unpoison the kernel_stack_overflow()'s pt_regs Ilya Leoshkevich
2023-11-16 15:32 ` Alexander Potapenko
2023-11-15 20:31 ` [PATCH 29/32] s390/uaccess: Add KMSAN support to put_user() and get_user() Ilya Leoshkevich
2023-11-15 20:31 ` [PATCH 30/32] s390/unwind: Disable KMSAN checks Ilya Leoshkevich
2023-11-16 9:04 ` Alexander Potapenko
2023-11-16 9:05 ` Alexander Potapenko
2023-11-15 20:31 ` [PATCH 31/32] s390: Implement the architecture-specific kmsan functions Ilya Leoshkevich
2023-11-15 20:31 ` [PATCH 32/32] kmsan: Enable on s390 Ilya Leoshkevich
2023-11-16 8:42 ` [PATCH 00/32] " Alexander Potapenko
2023-11-16 10:13 ` Ilya Leoshkevich
2023-11-16 10:22 ` Christian Borntraeger
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