From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,shuah@kernel.org,corbet@lwn.net,sj@kernel.org,akpm@linux-foundation.org
Subject: [merged mm-stable] mm-damon-core-initialize-esz_bp-from-damos_quota_init_priv.patch removed from -mm tree
Date: Sat, 11 May 2024 15:42:06 -0700 [thread overview]
Message-ID: <20240511224206.93DBAC2BBFC@smtp.kernel.org> (raw)
The quilt patch titled
Subject: mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
has been removed from the -mm tree. Its filename was
mm-damon-core-initialize-esz_bp-from-damos_quota_init_priv.patch
This patch was dropped because it was merged into the mm-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 ->esz_bp from damos_quota_init_priv()
Date: Fri, 3 May 2024 11:03:09 -0700
Patch series "mm/damon: misc fixes and improvements".
Add miscelleneous and non-urgent fixes and improvements for DAMON code,
selftests, and documents.
This patch (of 10):
damos_quota_init_priv() function should initialize all private fields of
struct damos_quota. However, it is not initializing ->esz_bp field. This
could result in use of uninitialized variable from
damon_feed_loop_next_input() function. There is no such issue at the
moment because every caller of the function is passing damos_quota object
that already having the field zero value. But we cannot guarantee the
future, and the function is not doing what it is promising. A bug is a
bug. This fix is for preventing possible future issues.
Link: https://lkml.kernel.org/r/20240503180318.72798-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20240503180318.72798-2-sj@kernel.org
Fixes: 9294a037c015 ("mm/damon/core: implement goal-oriented feedback-driven quota auto-tuning")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
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-esz_bp-from-damos_quota_init_priv
+++ a/mm/damon/core.c
@@ -346,6 +346,7 @@ static struct damos_quota *damos_quota_i
quota->charged_from = 0;
quota->charge_target_from = NULL;
quota->charge_addr_from = 0;
+ quota->esz_bp = 0;
return quota;
}
_
Patches currently in -mm which might be from sj@kernel.org are
reply other threads:[~2024-05-11 22:42 UTC|newest]
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