diff mbox series

[01/10] mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()

Message ID 20240503180318.72798-2-sj@kernel.org (mailing list archive)
State New
Headers show
Series mm/damon: misc fixes and improvements | expand

Commit Message

SeongJae Park May 3, 2024, 6:03 p.m. UTC 
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.

Fixes: 9294a037c015 ("mm/damon/core: implement goal-oriented feedback-driven quota auto-tuning")
Signed-off-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/core.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/mm/damon/core.c b/mm/damon/core.c
index 172095e68c5d..6392f1cc97a3 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -346,6 +346,7 @@  static struct damos_quota *damos_quota_init(struct damos_quota *quota)
 	quota->charged_from = 0;
 	quota->charge_target_from = NULL;
 	quota->charge_addr_from = 0;
+	quota->esz_bp = 0;
 	return quota;
 }