* + kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch added to mm-unstable branch
@ 2023-12-14 22:43 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2023-12-14 22:43 UTC (permalink / raw)
To: mm-commits, vbabka, svens, rostedt, roman.gushchin, rientjes,
penberg, mhiramat, mark.rutland, iamjoonsoo.kim, hca, gor, glider,
elver, dvyukov, cl, borntraeger, agordeev, 42.hyeyoo, iii, akpm
The patch titled
Subject: kmsan: remove a useless assignment from kmsan_vmap_pages_range_noflush()
has been added to the -mm mm-unstable branch. Its filename is
kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.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 <iii@linux.ibm.com>
Subject: kmsan: remove a useless assignment from kmsan_vmap_pages_range_noflush()
Date: Thu, 14 Dec 2023 00:24:27 +0100
The value assigned to prot is immediately overwritten on the next line
with PAGE_KERNEL. The right hand side of the assignment has no
side-effects.
Link: https://lkml.kernel.org/r/20231213233605.661251-8-iii@linux.ibm.com
Fixes: b073d7f8aee4 ("mm: kmsan: maintain KMSAN metadata for page operations")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Suggested-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/kmsan/shadow.c | 1 -
1 file changed, 1 deletion(-)
--- a/mm/kmsan/shadow.c~kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush
+++ a/mm/kmsan/shadow.c
@@ -243,7 +243,6 @@ int kmsan_vmap_pages_range_noflush(unsig
s_pages[i] = shadow_page_for(pages[i]);
o_pages[i] = origin_page_for(pages[i]);
}
- prot = __pgprot(pgprot_val(prot) | _PAGE_NX);
prot = PAGE_KERNEL;
origin_start = vmalloc_meta((void *)start, KMSAN_META_ORIGIN);
_
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* + kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch added to mm-unstable branch
@ 2024-06-13 20:30 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2024-06-13 20:30 UTC (permalink / raw)
To: mm-commits, vbabka, svens, rostedt, roman.gushchin, rientjes,
penberg, mhiramat, mark.rutland, iamjoonsoo.kim, hca, gor, glider,
elver, dvyukov, cl, borntraeger, agordeev, 42.hyeyoo, iii, akpm
The patch titled
Subject: kmsan: remove a useless assignment from kmsan_vmap_pages_range_noflush()
has been added to the -mm mm-unstable branch. Its filename is
kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.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 <iii@linux.ibm.com>
Subject: kmsan: remove a useless assignment from kmsan_vmap_pages_range_noflush()
Date: Thu, 13 Jun 2024 17:34:09 +0200
The value assigned to prot is immediately overwritten on the next line
with PAGE_KERNEL. The right hand side of the assignment has no
side-effects.
Link: https://lkml.kernel.org/r/20240613153924.961511-8-iii@linux.ibm.com
Fixes: b073d7f8aee4 ("mm: kmsan: maintain KMSAN metadata for page operations")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Suggested-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/kmsan/shadow.c | 1 -
1 file changed, 1 deletion(-)
--- a/mm/kmsan/shadow.c~kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush
+++ a/mm/kmsan/shadow.c
@@ -243,7 +243,6 @@ int kmsan_vmap_pages_range_noflush(unsig
s_pages[i] = shadow_page_for(pages[i]);
o_pages[i] = origin_page_for(pages[i]);
}
- prot = __pgprot(pgprot_val(prot) | _PAGE_NX);
prot = PAGE_KERNEL;
origin_start = vmalloc_meta((void *)start, KMSAN_META_ORIGIN);
_
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
kmsan-do-not-round-up-pg_data_t-size.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-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-unwind-disable-kmsan-checks.patch
s390-implement-the-architecture-specific-kmsan-functions.patch
kmsan-enable-on-s390.patch
^ permalink raw reply [flat|nested] 3+ messages in thread
* + kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch added to mm-unstable branch
@ 2024-06-20 0:58 Andrew Morton
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2024-06-20 0:58 UTC (permalink / raw)
To: mm-commits, vbabka, svens, rostedt, roman.gushchin, rientjes,
penberg, mhiramat, mark.rutland, kasan-dev, iamjoonsoo.kim, hca,
gor, glider, elver, dvyukov, cl, borntraeger, agordeev, 42.hyeyoo,
iii, akpm
The patch titled
Subject: kmsan: remove a useless assignment from kmsan_vmap_pages_range_noflush()
has been added to the -mm mm-unstable branch. Its filename is
kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.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 <iii@linux.ibm.com>
Subject: kmsan: remove a useless assignment from kmsan_vmap_pages_range_noflush()
Date: Wed, 19 Jun 2024 17:43:42 +0200
The value assigned to prot is immediately overwritten on the next line
with PAGE_KERNEL. The right hand side of the assignment has no
side-effects.
Link: https://lkml.kernel.org/r/20240619154530.163232-8-iii@linux.ibm.com
Fixes: b073d7f8aee4 ("mm: kmsan: maintain KMSAN metadata for page operations")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Suggested-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: <kasan-dev@googlegroups.com>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/kmsan/shadow.c | 1 -
1 file changed, 1 deletion(-)
--- a/mm/kmsan/shadow.c~kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush
+++ a/mm/kmsan/shadow.c
@@ -243,7 +243,6 @@ int kmsan_vmap_pages_range_noflush(unsig
s_pages[i] = shadow_page_for(pages[i]);
o_pages[i] = origin_page_for(pages[i]);
}
- prot = __pgprot(pgprot_val(prot) | _PAGE_NX);
prot = PAGE_KERNEL;
origin_start = vmalloc_meta((void *)start, KMSAN_META_ORIGIN);
_
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-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
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-06-20 0:58 UTC | newest]
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2024-06-20 0:58 + kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch added to mm-unstable branch Andrew Morton
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2024-06-13 20:30 Andrew Morton
2023-12-14 22:43 Andrew Morton
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