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a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=Yq5XynenixoA:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=jiCTI4zE5U7BLdzWsZGv:22 a=7Gl3-_t3PgB9XO-mQDs3:22 a=VwQbUJbxAAAA:8 a=yPCof4ZbAAAA:8 a=GZQF0S47T6CTDkA6RJIA:9 cc=ntf awl=host:12273 X-Proofpoint-ORIG-GUID: QWAeL7gp6KZXx0cEpSFUjcv-PO4AN0Rn X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE3MDE3NiBTYWx0ZWRfX/EfoczB+8PPs IEJ+r7yucI2YmMf26eTjTzd5VjWKi7cmi/B/wrcHLNHrTAU58UyA4QZuCMuVY32qhRTjU9jkk4F f+IOlOzg6rOimvptDrttu2IjDpOxoabucu4zbULl+d8w9LVdqq2Rf8zljy2/aTOW4NWtZmgMDx1 RM3L4/xZYCEzv1cb1d8J8pZv6QpEzoKgoEjB/NUwnG9WsWnUETGC5yoq/indxj4ZdzBa52SVxJn EVtJ1JiJGIyZ8YYCV1BCERk40bFKtUR7bR8bQWCaZh4rhmeXImcfbdEM7Yw0PH6e4ZqW4X0Hpvw BV3cPOMrTD4cEg8r2rw/02PzGuyBjDysD5J7CI3GkeCSzT6+OJnlUkoKRVQY7D+1GmE6KqiEfw3 apwzOgwTQRLV1TUMubY+APQy86uTzyWus7iMwIyGpbjMGXoZDcnU1BGAoKeUTbXNloL6OdhCrgp 5Hj37r2AdGWmWpFbxMhMzs0V1YG2xjdg0SIon9XQ= X-Proofpoint-GUID: QWAeL7gp6KZXx0cEpSFUjcv-PO4AN0Rn Content-Type: text/plain; charset="utf-8" sched_tick() only assigns resched_latency when the LATENCY_WARN feature is enabled, but tests the variable later in a separate feature check. That leaves the code dependent on both checks observing identical state. Initializing resched_latency to zero makes the later test safe even if the feature state changes between the two checks. This does not change behavior when LATENCY_WARN is enabled. It only avoids using an uninitialized local value. Fixes: c006fac556e4 ("sched: Warn on long periods of pending need_resched") Cc: stable@vger.kernel.org Assisted-by: Codex:GPT-5 Signed-off-by: Joseph Salisbury Reviewed-by: Steven Rostedt (Google) --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 08a06162dd9a..15916186e4ff 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5548,7 +5548,7 @@ void sched_tick(void) struct task_struct *donor; struct rq_flags rf; unsigned long hw_pressure; - u64 resched_latency; + u64 resched_latency =3D 0; =20 if (housekeeping_cpu(cpu, HK_TYPE_KERNEL_NOISE)) arch_scale_freq_tick(); --=20 2.47.3