From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org, stable@vger.kernel.org,
sj@kernel.org, wangkefeng.wang@huawei.com,
akpm@linux-foundation.org
Subject: [merged mm-hotfixes-stable] mm-damon-core-fix-divide-error-in-damon_nr_accesses_to_accesses_bp.patch removed from -mm tree
Date: Wed, 07 Jun 2023 13:00:15 -0700 [thread overview]
Message-ID: <20230607200016.43160C433D2@smtp.kernel.org> (raw)
The quilt patch titled
Subject: mm/damon/core: fix divide error in damon_nr_accesses_to_accesses_bp()
has been removed from the -mm tree. Its filename was
mm-damon-core-fix-divide-error-in-damon_nr_accesses_to_accesses_bp.patch
This patch was dropped because it was merged into the mm-hotfixes-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: mm/damon/core: fix divide error in damon_nr_accesses_to_accesses_bp()
Date: Sat, 27 May 2023 11:21:01 +0800
If 'aggr_interval' is smaller than 'sample_interval', max_nr_accesses in
damon_nr_accesses_to_accesses_bp() becomes zero which leads to divide
error, let's validate the values of them in damon_set_attrs() to fix it,
which similar to others attrs check.
Link: https://lkml.kernel.org/r/20230527032101.167788-1-wangkefeng.wang@huawei.com
Fixes: 2f5bef5a590b ("mm/damon/core: update monitoring results for new monitoring attributes")
Reported-by: syzbot+841a46899768ec7bec67@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=841a46899768ec7bec67
Link: https://lore.kernel.org/damon/00000000000055fc4e05fc975bc2@google.com/
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/damon/core.c | 2 ++
1 file changed, 2 insertions(+)
--- a/mm/damon/core.c~mm-damon-core-fix-divide-error-in-damon_nr_accesses_to_accesses_bp
+++ a/mm/damon/core.c
@@ -551,6 +551,8 @@ int damon_set_attrs(struct damon_ctx *ct
return -EINVAL;
if (attrs->min_nr_regions > attrs->max_nr_regions)
return -EINVAL;
+ if (attrs->sample_interval > attrs->aggr_interval)
+ return -EINVAL;
damon_update_monitoring_results(ctx, attrs);
ctx->attrs = *attrs;
_
Patches currently in -mm which might be from wangkefeng.wang@huawei.com are
mm-memory_failure-move-memory_failure_attr_group-under-memory_failure.patch
mm-memory-failure-move-sysctl-register-in-memory_failure_init.patch
mm-page_alloc-move-mirrored_kernelcore-into-mm_initc.patch
mm-page_alloc-move-init_on_alloc-free-into-mm_initc.patch
mm-page_alloc-move-set_zone_contiguous-into-mm_initc.patch
mm-page_alloc-collect-mem-statistic-into-show_memc.patch
mm-page_alloc-squash-page_is_consistent.patch
mm-page_alloc-remove-alloc_contig_dump_pages-stub.patch
mm-page_alloc-split-out-fail_page_alloc.patch
mm-page_alloc-split-out-debug_pagealloc.patch
mm-page_alloc-move-mark_free_page-into-snapshotc.patch
mm-page_alloc-move-pm_-function-into-power.patch
mm-vmscan-use-gfp_has_io_fs.patch
mm-page_alloc-move-sysctls-into-it-own-fils.patch
mm-page_alloc-move-is_check_pages_enabled-into-page_allocc.patch
reply other threads:[~2023-06-07 20:00 UTC|newest]
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