"rcu_sched self-detected stall on cpu" 是一个由Linux内核RCU(Read-Copy Update)子系统发出的警告信息,表明RCU调度器检测到某个CPU在处理RCU读侧临界区时出现了延迟,即该CPU在预期的时间内没有完成RCU的宽限期(grace period)。这通常意味着该CPU可能处于长时间占用状态,导致RCU的读侧临界区无法及时释放,进而影...
(1)CPU在RCU读侧临界区域中循环:当CPU在持有RCU读侧临界区域时进入循环,阻止其他CPU取得进展,就会发生这种情况。 (2)CPU在中断被禁用时循环:如果CPU禁用了中断并进入循环,就会引起RCU CPU停滞警告,因为中断对于RCU的进展是必需的。 (3)CPU在抢占被禁用时循环:当CPU禁用抢占并进入循环时,会导致RCU停滞,因为抢占对...
[306.729557]rcu:INFO:rcu_schedself-detectedstallonCPU/* 关注点1 */[306.730137]rcu:2-...:(...
When CPU idle<10%, RCU stall warnings occurs after >24hour. Would you please help us in how we can resolve the issue. How to debug and narrow down the root cause. Attached Logs for more information:[285165.790740] INFO: rcu_sched self-detected stall on CPU[...
INFO: rcu_sched self-detected stall on CPU 0-...: (2 GPs behind) idle=ba3/2/0 softirq=57744173/57744175 fqs=792613 (t=915060 jiffies g=633773 c=633772 q=122002) Task dump for CPU 0: swapper/0 R running 0 0 0 0x00100004 ...
linux查看内核调度,一个小实验看清Linux内核调度机制https://blog.csdn.net/weixin_33277215/article/details/116631744 linux内核死锁调试https://blog.csdn.net/u010481276/article/details/78967143 NMI backtrace for cpu 0 when run oslathttps://bugzilla.redhat.com/show_bug.cgi?id=1837816...
I'm getting "rcu_sched self-detected stall on CPU" errors in every VM at startup, and then if the VM's are under a heavy load, the proxmox host machine will also lockup and begin saying the same message. I'm not sure even how to figure out my root cause. Numerous google have ...
cpu_stop_queue_work //将cpu_stop_work 插入, wake_up_q //并唤醒 wake_q_head关联的stop_machine内核线程(migration/X) no: 检测是否超过20s ? 工作函数:softlockup_fn static int softlockup_fn(void *data) { __this_cpu_write(soft_lockup_hrtimer_cnt, ...
root@imx8dx_ccu:~# [ 1139.642737] INFO: rcu_preempt self-detected stall on CPU[ 1139.643202] INFO: rcu_preempt detected stalls on CPUs/tasks:[ 1139.648077] 0-...: (1 GPs behind) idle=e42/2/0 softirq=40213/40214 fqs=5329[ 1139.653729] 0-...: (1 GPs behind) ...
Massive iteration in find_get_entry() causes huge number of soft lockups and rcu_sched CPU stalls Raw [49754.048640] rcu: INFO: rcu_sched self-detected stall on CPU [49754.048644] rcu: 5-...: (59997 ticks this GP) idle=bfe/1/0x4000000000000002 softirq=3748856/3748856 fqs=14869 [49754.04...