NMI backtrace for cpu 0 when run oslathttps://bugzilla.redhat.com/show_bug.cgi?id=1837816
最近换平台,CPU使用了PowerPC的P1020,双核。 linux版本也升级到了3.0.48版本。升级之后出现了一个问题:SDK里面的程序跑一段时间之后会报告: INFO: rcu_sched_state detected stalls on CPUs/tasks: { 1} (detected by 0, t=15002 jiffies)。意思是CORE0检测到CORE1挂了。 SDK里面使用了lock_kernel和unlock_...
RK3588 NVR版本SDK编译的kernel出现rcu: INFO: rcu_sched detected stalls on CPUs/tasks问题。使用百度...
kthread_bind+0x30/0x30[61.291488] ret_from_fork+0x35/0x40[82.349534] rcu: INFO: rcu_sched detected stallsonCPUs/tasks: [82.349560] rcu:0-...!: (1GPs behind) idle=f3c/0/0x0softirq=924/924fqs=0[82.349581] rcu:4-...!: (0ticksthisGP) idle=558/0/0x0softirq=1782/1782fqs=0[82...
并继续为每个暂停当前 RCU 任务宽限期的任务输出 sched_show_task()。 解释RCU’s CPU Stall-Detector“Splats” 对于RCU 的非 RCU 任务风格,当一个 CPU 检测到某个其他 CPU 正在停止时,它将打印类似于以下内容的消息: INFO:rcu_scheddetected stalls on CPUs/tasks: ...
rcu_sched detected stalls on CPUs/tasks Options 05-10-2020 11:57 PM 5,695 Views 869002520 Contributor I Hi,all: I'm meeting a very serious problem on the chip of imx.6(linux version:4.1.15)。the system maybe suspend when run sometimes, and print rcu stall in sometimes just as...
root@OpenWrt:/# [ 184.045603] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: [ 184.051575] rcu: 3-...0: (1 ticks this GP) idle=572/1/0x4000000000000000 softirq=5076/5076 fqs=935 [ 184.060757] (detected by 0, t=2102 jiffies, g=7101, q=25) [ 184.066272] Task dump for CPU...
Linux 内核分析 rcu_sched self-detected stall on CPU_小立爱学习的博客 spin_lock最终会调用preempt_disable:关闭抢占,此时CONFIG_PREEMPT=y。不满足preempt_schedule_irq抢占,导致无法进程调度。 static inline void __raw_spin_lock(raw_spinlock_t *lock) ...
INFO: rcu_sched_state detected stalls on CPUs/tasks: { 15} (detected by 17, t=15002 jiffies) 或 INFO: rcu_bh_state detected stalls on CPUs/tasks: { 3 5 } (detected by 2, 2502 jiffies) 等等。 在上述告警信息之后通常还会看到相关CPU的stack dump,检查stack trace有助于了解当时运行的代码和...
通过cpu热插拔解决rcustall的问题 在linux 3.10环境⼀次故障处理中，发现有类似如下打印：NFO: rcu_sched_state detected stalls on CPUs/tasks: {15 } (detected by 4, 6002 jiffies,其余信息省略)该环境没有开启rcu的callback线程，也就是rcu是在软中断中处理。获取信息发现，有⼀个核的rcu的qlen已经达到...