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[86.151.98.16]) by smtp.gmail.com with ESMTPSA id h15-20020adfe98f000000b0034c926ef66csm315045wrm.51.2024.05.01.12.51.17 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 01 May 2024 12:51:17 -0700 (PDT) From: Levi Yun To: anna-maria@linutronix.de, frederic@kernel.org, tglx@linutronix.de Cc: linux-kernel@vger.kernel.org, Levi Yun Subject: [PATCH] time/timgr: Fix wrong reference when level 0 group allocation failed Date: Wed, 1 May 2024 20:51:16 +0100 Message-ID: <20240501195116.62669-1-ppbuk5246@gmail.com> X-Mailer: git-send-email 2.41.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When tmigr_setup_groups() failed level 0 group allocation, next do while loop refers wrong local stack array location. Changing group init do while loop with while loop to fix this problem. Signed-off-by: Levi Yun --- kernel/time/timer_migration.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/time/timer_migration.c b/kernel/time/timer_migration.c index ccba875d2234..84413114db5c 100644 --- a/kernel/time/timer_migration.c +++ b/kernel/time/timer_migration.c @@ -1596,7 +1596,7 @@ static int tmigr_setup_groups(unsigned int cpu, unsig= ned int node) =20 } while (i < tmigr_hierarchy_levels); =20 - do { + while (i > 0) { group =3D stack[--i]; =20 if (err < 0) { @@ -1645,7 +1645,7 @@ static int tmigr_setup_groups(unsigned int cpu, unsig= ned int node) tmigr_connect_child_parent(child, group); } } - } while (i > 0); + } =20 kfree(stack); =20 --=20 2.41.0