+ s390-cpacf-unpoison-the-results-of-cpacf_trng.patch added to mm-unstable branch

0 views
Skip to first unread message

Andrew Morton

unread,
Jun 19, 2024, 8:59:09 PMJun 19
to mm-co...@vger.kernel.org, vba...@suse.cz, sv...@linux.ibm.com, ros...@goodmis.org, roman.g...@linux.dev, rien...@google.com, pen...@kernel.org, mhir...@kernel.org, mark.r...@arm.com, kasa...@googlegroups.com, iamjoon...@lge.com, h...@linux.ibm.com, g...@linux.ibm.com, gli...@google.com, el...@google.com, dvy...@google.com, c...@linux.com, bornt...@linux.ibm.com, agor...@linux.ibm.com, 42.h...@gmail.com, i...@linux.ibm.com, ak...@linux-foundation.org

The patch titled
Subject: s390/cpacf: unpoison the results of cpacf_trng()
has been added to the -mm mm-unstable branch. Its filename is
s390-cpacf-unpoison-the-results-of-cpacf_trng.patch

This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/s390-cpacf-unpoison-the-results-of-cpacf_trng.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 <i...@linux.ibm.com>
Subject: s390/cpacf: unpoison the results of cpacf_trng()
Date: Wed, 19 Jun 2024 17:44:00 +0200

Prevent KMSAN from complaining about buffers filled by cpacf_trng() being
uninitialized.

Link: https://lkml.kernel.org/r/20240619154530...@linux.ibm.com
Signed-off-by: Ilya Leoshkevich <i...@linux.ibm.com>
Tested-by: Alexander Gordeev <agor...@linux.ibm.com>
Reviewed-by: Alexander Potapenko <gli...@google.com>
Acked-by: Heiko Carstens <h...@linux.ibm.com>
Cc: Christian Borntraeger <bornt...@linux.ibm.com>
Cc: Christoph Lameter <c...@linux.com>
Cc: David Rientjes <rien...@google.com>
Cc: Dmitry Vyukov <dvy...@google.com>
Cc: Hyeonggon Yoo <42.h...@gmail.com>
Cc: Joonsoo Kim <iamjoon...@lge.com>
Cc: <kasa...@googlegroups.com>
Cc: Marco Elver <el...@google.com>
Cc: Mark Rutland <mark.r...@arm.com>
Cc: Masami Hiramatsu (Google) <mhir...@kernel.org>
Cc: Pekka Enberg <pen...@kernel.org>
Cc: Roman Gushchin <roman.g...@linux.dev>
Cc: Steven Rostedt (Google) <ros...@goodmis.org>
Cc: Sven Schnelle <sv...@linux.ibm.com>
Cc: Vasily Gorbik <g...@linux.ibm.com>
Cc: Vlastimil Babka <vba...@suse.cz>
Signed-off-by: Andrew Morton <ak...@linux-foundation.org>
---

arch/s390/include/asm/cpacf.h | 3 +++
1 file changed, 3 insertions(+)

--- a/arch/s390/include/asm/cpacf.h~s390-cpacf-unpoison-the-results-of-cpacf_trng
+++ a/arch/s390/include/asm/cpacf.h
@@ -12,6 +12,7 @@
#define _ASM_S390_CPACF_H

#include <asm/facility.h>
+#include <linux/kmsan-checks.h>

/*
* Instruction opcodes for the CPACF instructions
@@ -542,6 +543,8 @@ static inline void cpacf_trng(u8 *ucbuf,
: [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);
}

/**
_

Patches currently in -mm which might be from i...@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-introduce-memset_no_sanitize_memory.patch
kmsan-support-slab_poison.patch
kmsan-use-align_down-in-kmsan_get_metadata.patch
kmsan-do-not-round-up-pg_data_t-size.patch
mm-slub-let-kmsan-access-metadata.patch
mm-slub-disable-kmsan-when-checking-the-padding-bytes.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-boot-turn-off-kmsan.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-uaccess-add-the-missing-linux-instrumentedh-include.patch
s390-unwind-disable-kmsan-checks.patch
s390-kmsan-implement-the-architecture-specific-functions.patch
kmsan-enable-on-s390.patch

Reply all
Reply to author
Forward
0 new messages