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authorSeongJae Park <sj@kernel.org>2025-09-08 19:22:37 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-09-25 11:16:54 +0200
commitf9fc28d1451b3c78307ea0d0fa6d83f8b68aa4f2 (patch)
treebbd04687d7a744a83cd80f3e1cf6e97b5536326a
parent40108f69c372af3aea73e7829d6849a44638d662 (diff)
samples/damon/prcl: avoid starting DAMON before initialization
commit e6b733ca2f99e968d696c2e812c8eb8e090bf37b upstream. Commit 2780505ec2b4 ("samples/damon/prcl: fix boot time enable crash") is somehow incompletely applying the origin patch [1]. It is missing the part that avoids starting DAMON before module initialization. Probably a mistake during a merge has happened. Fix it by applying the missed part again. Link: https://lkml.kernel.org/r/20250909022238.2989-3-sj@kernel.org Link: https://lore.kernel.org/20250706193207.39810-3-sj@kernel.org [1] Fixes: 2780505ec2b4 ("samples/damon/prcl: fix boot time enable crash") Signed-off-by: SeongJae Park <sj@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--samples/damon/prcl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/samples/damon/prcl.c b/samples/damon/prcl.c
index 223f13a5a4ad..f971e61e6c5c 100644
--- a/samples/damon/prcl.c
+++ b/samples/damon/prcl.c
@@ -124,6 +124,9 @@ static int damon_sample_prcl_enable_store(
if (enabled == is_enabled)
return 0;
+ if (!init_called)
+ return 0;
+
if (enabled) {
err = damon_sample_prcl_start();
if (err)