The patch titled
Subject: mm/damon/core: initialize damon_target->list in damon_new_target()
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-damon-core-initialize-damon_target-list-in-damon_new_target.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-core-initialize-damon_target-list-in-damon_new_target.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: SeongJae Park <sj@xxxxxxxxxx>
Subject: mm/damon/core: initialize damon_target->list in damon_new_target()
Date: Sun, 2 Oct 2022 19:31:30 +0000
'struct damon_target' creation function, 'damon_new_target()' is not
initializing its '->list' field, unlike other DAMON structs creator
functions such as 'damon_new_region()'. Normal users of
'damon_new_target()' initializes the field by adding the target to DAMON
context's targets list, but some code could access the uninitialized
field.
This commit avoids the case by initializing the field in
'damon_new_target()'.
Link: https://lkml.kernel.org/r/20221002193130.8227-1-sj@xxxxxxxxxx
Fixes: f23b8eee1871 ("mm/damon/core: implement region-based sampling")
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Reported-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Tested-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/damon/core.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/damon/core.c~mm-damon-core-initialize-damon_target-list-in-damon_new_target
+++ a/mm/damon/core.c
@@ -313,6 +313,7 @@ struct damon_target *damon_new_target(vo
t->pid = NULL;
t->nr_regions = 0;
INIT_LIST_HEAD(&t->regions_list);
+ INIT_LIST_HEAD(&t->list);
return t;
}
_
Patches currently in -mm which might be from sj@xxxxxxxxxx are
mm-damon-core-initialize-damon_target-list-in-damon_new_target.patch
selftest-damon-add-a-test-for-duplicate-context-dirs-creation.patch
mm-damon-core-avoid-holes-in-newly-set-monitoring-target-ranges.patch
mm-damon-core-test-test-damon_set_regions.patch
docs-admin-guide-mm-damon-rename-the-title-of-the-document.patch
mm-damon-kconfig-notify-debugfs-deprecation-plan.patch
docs-admin-guide-mm-damon-start-mention-the-dependency-as-sysfs-instead-of-debugfs.patch
docs-admin-guide-mm-damon-usage-note-damon-debugfs-interface-deprecation-plan.patch
mm-damon-paddr-make-supported-damos-actions-of-paddr-clear.patch
mm-damon-paddr-deduplicate-damon_pa_mark_accesseddeactivate_pages.patch
mm-damon-core-copy-struct-to-struct-instead-of-field-to-field-in-damon_new_scheme.patch
mm-damon-core-factor-out-damos_quota-private-fileds-initialization.patch
mm-damon-core-use-a-dedicated-struct-for-monitoring-attributes.patch
mm-damon-core-reduce-parameters-for-damon_set_attrs.patch
mm-damon-reclaim-use-struct-damon_attrs-for-storing-parameters-for-it.patch
mm-damon-lru_sort-use-struct-damon_attrs-for-storing-parameters-for-it.patch
mm-damon-implement-a-monitoring-attributes-module-parameters-generator-macro.patch
mm-damon-lru_sort-use-monitoring-attributes-parameters-generaotr-macro.patch
mm-damon-reclaim-use-monitoring-attributes-parameters-generator-macro.patch
mm-damon-modules-common-implement-a-watermarks-module-parameters-generator-macro.patch
mm-damon-lru_sort-use-watermarks-parameters-generator-macro.patch
mm-damon-reclaim-use-watermarks-parameters-generator-macro.patch
mm-damon-modules-common-implement-a-stats-parameters-generator-macro.patch
mm-damon-reclaim-use-stat-parameters-generator.patch
mm-damon-lru_sort-use-stat-generator.patch
mm-damon-modules-common-implement-a-damos-quota-params-generator.patch
mm-damon-modules-common-implement-damos-time-quota-params-generator.patch
mm-damon-reclaim-use-the-quota-params-generator-macro.patch
mm-damon-lru_sort-use-quotas-param-generator.patch
mm-damon-lru_sort-deduplicate-hot-cold-schemes-generators.patch
