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* [merged mm-hotfixes-stable] mm-damon-core-initialize-damon_target-list-in-damon_new_target.patch removed from -mm tree
@ 2022-10-12  2:06 Andrew Morton
  0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2022-10-12  2:06 UTC (permalink / raw)
  To: mm-commits, 42.hyeyoo, sj, akpm


The quilt patch titled
     Subject: mm/damon/core: initialize damon_target->list in damon_new_target()
has been removed from the -mm tree.  Its filename was
     mm-damon-core-initialize-damon_target-list-in-damon_new_target.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: SeongJae Park <sj@kernel.org>
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@kernel.org
Fixes: f23b8eee1871 ("mm/damon/core: implement region-based sampling")
Signed-off-by: SeongJae Park <sj@kernel.org>
Reported-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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@kernel.org are



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2022-10-12  2:06 [merged mm-hotfixes-stable] mm-damon-core-initialize-damon_target-list-in-damon_new_target.patch removed from -mm tree Andrew Morton

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