The following commit has been merged into the timers/core branch of tip: Commit-ID: 2731aa7d65dbb31c6dad14347c37d522bb3bc7c6 Gitweb: https://git.kernel.org/tip/2731aa7d65dbb31c6dad14347c37d522bb3bc7c6 Author: Anna-Maria Behnsen <anna-maria@xxxxxxxxxxxxx> AuthorDate: Tue, 05 Apr 2022 21:17:31 +02:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Sat, 09 Apr 2022 22:19:39 +02:00 timers: Initialize base::next_expiry_recalc in timers_prepare_cpu() When base::next_expiry_recalc is not initialized to false during cpu bringup in HOTPLUG_CPU and is accidently true and no timer is queued in the meantime, the loop through the wheel to find __next_timer_interrupt() might be done for nothing. Therefore initialize base::next_expiry_recalc to false in timers_prepare_cpu(). Signed-off-by: Anna-Maria Behnsen <anna-maria@xxxxxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Reviewed-by: Frederic Weisbecker <frederic@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220405191732.7438-2-anna-maria@xxxxxxxxxxxxx --- kernel/time/timer.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 9dd2a39..204d6cd 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1953,6 +1953,7 @@ int timers_prepare_cpu(unsigned int cpu) base = per_cpu_ptr(&timer_bases[b], cpu); base->clk = jiffies; base->next_expiry = base->clk + NEXT_TIMER_MAX_DELTA; + base->next_expiry_recalc = false; base->timers_pending = false; base->is_idle = false; }
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