From: Nicholas Miehlbradt <nicholas@linux.ibm.com>
To: glider@google.com, elver@google.com, dvyukov@google.com,
akpm@linux-foundation.org, mpe@ellerman.id.au, npiggin@gmail.com,
christophe.leroy@csgroup.eu
Cc: iii@linux.ibm.com, linux-kernel@vger.kernel.org,
Nicholas Miehlbradt <nicholas@linux.ibm.com>,
linux-mm@kvack.org, kasan-dev@googlegroups.com,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 00/13] kmsan: Enable on powerpc
Date: Thu, 14 Dec 2023 05:55:26 +0000 [thread overview]
Message-ID: <20231214055539.9420-1-nicholas@linux.ibm.com> (raw)
This series provides the minimal support for Kernal Memory Sanitizer on
powerpc pseries le guests. Kernal Memory Sanitizer is a tool which detects
uses of uninitialized memory. Currently KMSAN is clang only.
The clang support for powerpc has not yet been merged, the pull request can
be found here [1].
In addition to this series, there are a number of changes required in
generic kmsan code. These changes are already on mailing lists as part of
the series implementing KMSAN for s390 [2]. This series is intended to be
rebased on top of the s390 series.
In addition, I found a bug in the rtc driver used on powerpc. I have sent
a fix to this in a seperate series [3].
With this series and the two series mentioned above, I can successfully
boot pseries le defconfig without KMSAN warnings. I have not tested other
powerpc platforms.
[1] https://github.com/llvm/llvm-project/pull/73611
[2] https://lore.kernel.org/linux-mm/20231121220155.1217090-1-iii@linux.ibm.com/
[3] https://lore.kernel.org/linux-rtc/20231129073647.2624497-1-nicholas@linux.ibm.com/
Nicholas Miehlbradt (13):
kmsan: Export kmsan_handle_dma
hvc: Fix use of uninitialized array in udbg_hvc_putc
powerpc: Disable KMSAN santitization for prom_init, vdso and purgatory
powerpc: Disable CONFIG_DCACHE_WORD_ACCESS when KMSAN is enabled
powerpc: Unpoison buffers populated by hcalls
powerpc/pseries/nvram: Unpoison buffer populated by rtas_call
powerpc/kprobes: Unpoison instruction in kprobe struct
powerpc: Unpoison pt_regs
powerpc: Disable KMSAN checks on functions which walk the stack
powerpc: Define KMSAN metadata address ranges for vmalloc and ioremap
powerpc: Implement architecture specific KMSAN interface
powerpc/string: Add KMSAN support
powerpc: Enable KMSAN on powerpc
arch/powerpc/Kconfig | 3 +-
arch/powerpc/include/asm/book3s/64/pgtable.h | 42 +++++++++++++++
arch/powerpc/include/asm/interrupt.h | 2 +
arch/powerpc/include/asm/kmsan.h | 51 +++++++++++++++++++
arch/powerpc/include/asm/string.h | 18 ++++++-
arch/powerpc/kernel/Makefile | 2 +
arch/powerpc/kernel/irq_64.c | 2 +
arch/powerpc/kernel/kprobes.c | 2 +
arch/powerpc/kernel/module.c | 2 +-
arch/powerpc/kernel/process.c | 6 +--
arch/powerpc/kernel/stacktrace.c | 10 ++--
arch/powerpc/kernel/vdso/Makefile | 1 +
arch/powerpc/lib/Makefile | 2 +
arch/powerpc/lib/mem_64.S | 5 +-
arch/powerpc/lib/memcpy_64.S | 2 +
arch/powerpc/perf/callchain.c | 2 +-
arch/powerpc/platforms/pseries/hvconsole.c | 2 +
arch/powerpc/platforms/pseries/nvram.c | 4 ++
arch/powerpc/purgatory/Makefile | 1 +
arch/powerpc/sysdev/xive/spapr.c | 3 ++
drivers/tty/hvc/hvc_vio.c | 2 +-
mm/kmsan/hooks.c | 1 +
.../selftests/powerpc/copyloops/asm/kmsan.h | 0
.../powerpc/copyloops/linux/export.h | 1 +
24 files changed, 152 insertions(+), 14 deletions(-)
create mode 100644 arch/powerpc/include/asm/kmsan.h
create mode 100644 tools/testing/selftests/powerpc/copyloops/asm/kmsan.h
--
2.40.1
next reply other threads:[~2023-12-14 5:59 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-14 5:55 Nicholas Miehlbradt [this message]
2023-12-14 5:55 ` [PATCH 01/13] kmsan: Export kmsan_handle_dma Nicholas Miehlbradt
2024-02-19 19:37 ` Christophe Leroy
2023-12-14 5:55 ` [PATCH 02/13] hvc: Fix use of uninitialized array in udbg_hvc_putc Nicholas Miehlbradt
2023-12-14 8:36 ` Christophe Leroy
2023-12-21 12:09 ` Michael Ellerman
2023-12-14 5:55 ` [PATCH 03/13] powerpc: Disable KMSAN santitization for prom_init, vdso and purgatory Nicholas Miehlbradt
2023-12-14 5:55 ` [PATCH 04/13] powerpc: Disable CONFIG_DCACHE_WORD_ACCESS when KMSAN is enabled Nicholas Miehlbradt
2023-12-14 8:42 ` Christophe Leroy
2023-12-14 5:55 ` [PATCH 05/13] powerpc: Unpoison buffers populated by hcalls Nicholas Miehlbradt
2023-12-14 5:55 ` [PATCH 06/13] powerpc/pseries/nvram: Unpoison buffer populated by rtas_call Nicholas Miehlbradt
2023-12-14 5:55 ` [PATCH 07/13] powerpc/kprobes: Unpoison instruction in kprobe struct Nicholas Miehlbradt
2023-12-15 7:51 ` Naveen N Rao
2023-12-14 5:55 ` [PATCH 08/13] powerpc: Unpoison pt_regs Nicholas Miehlbradt
2023-12-14 5:55 ` [PATCH 09/13] powerpc: Disable KMSAN checks on functions which walk the stack Nicholas Miehlbradt
2023-12-14 9:00 ` Christophe Leroy
2024-01-10 4:16 ` Nicholas Miehlbradt
2023-12-15 9:02 ` Aneesh Kumar K.V
2023-12-14 5:55 ` [PATCH 10/13] powerpc: Define KMSAN metadata address ranges for vmalloc and ioremap Nicholas Miehlbradt
2023-12-14 9:17 ` Christophe Leroy
2024-01-10 3:54 ` Nicholas Miehlbradt
2023-12-15 9:27 ` Aneesh Kumar K.V
2023-12-14 5:55 ` [PATCH 11/13] powerpc: Implement architecture specific KMSAN interface Nicholas Miehlbradt
2023-12-14 9:20 ` Christophe Leroy
2023-12-14 5:55 ` [PATCH 12/13] powerpc/string: Add KMSAN support Nicholas Miehlbradt
2023-12-14 9:25 ` Christophe Leroy
2024-01-10 4:09 ` Nicholas Miehlbradt
2023-12-14 5:55 ` [PATCH 13/13] powerpc: Enable KMSAN on powerpc Nicholas Miehlbradt
2023-12-14 9:27 ` Christophe Leroy
2024-02-20 6:39 ` [PATCH 00/13] kmsan: Enable " Christophe Leroy
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