[306.729557]rcu:INFO:rcu_schedself-detectedstallonCPU/* 关注点1 */[306.730137]rcu:2-...:(...
INFO: rcu_sched self-detected stall on CPU 0: (2099 ticks this GP) idle=5ed/140000000000001/0 softirq=13024/13024 fqs=1783 (t=2100 jiffies g=-51 c=-52 q=22) Task dump for CPU 0: insmod R running 0 658 657 0x00000002 [<c00171b4>] (unwind_backtrace) from [<c0012e7c>] (show...
[<c0052874>] (sched_show_task) from [<c0055dd0>] (dump_cpu_task+0x48/0x4c) [<c0055dd0>] (dump_cpu_task) from [<c0082878>] (rcu_dump_cpu_stacks+0x9c/0xd4) [<c0082878>] (rcu_dump_cpu_stacks) from [<c008665c>] (rcu_check_callbacks+0x640/0x968) [<c008665c>] (rcu_...
[MonOct2422:43:472022]rcu: INFO:rcu_preemptself-detectedstallonCPU[MonOct2422:43:472022]rcu: 0-...:(14984ticksthisGP)idle=ac2/1/0x4000000000000002softirq=9262037/9262037fqs=7453[MonOct2422:43:472022](t=15000jiffiesg=11314345q=55267)[MonOct2422:43:472022]NMIbacktraceforcpu0[MonOct2422:43:4...
1) When the CPU is in sleep mode: PMUFW: PmProcTrSleepToActive: SLEEP->ACTIVE NODE_APU_0 PMUFW: PmPowerRequestParent: NODE_APU_0->NODE_APU [ 149.889952] INFO: rcu_sched self-detected stall on CPU [ 149.895015] 3-...: (5249 ticks this GP) idle=d59/140000000000001/0 softirq=649...
This results in a trace ala: rcu: INFO: rcu_sched self-detected stall on CPU rcu: 2-...!: (5249 ticks this GP) idle=935c/1/0x4000000000000000 softirq=4265/4274 fqs=1 (t=5251 jiffies g=465 q=4135 ncpus=4) rcu: rcu_sched kthread starved for 5249 jiffies! g465 f0x0 RCU_GP_...
[ 431.858436] INFO: rcu_sched self-detected stall on CPU[ 431.860041] INFO: rcu_sched detected stalls on CPUs/tasks: [ 431.860044] 0-...: (1 ticks this GP) idle=c25/140000000000001/0 softirq=7744/7744 fqs=0 [ 431.860045] [ 431.860049] (detected by 1, t=12002 jiffies, g=2169, c=...
depends on TASKSTATS select SCHED_INFO help Collect information on time spent by a task waiting for system resources like cpu, synchronous block I/O completion and swapping in pages. Such statistics can help in setting a task's priorities ...
depends on DEBUG_OBJECTS help Enable this to turn on debugging of RCU list heads (call_rcu() usage). config DEBUG_OBJECTS_PERCPU_COUNTER bool "Debug percpu counter objects" depends on DEBUG_OBJECTS help If you say Y here, additional code will be inserted into the perc...
此时,大家都感到非常疑惑,为什么一个用户态的程序会导致 Cpu 时间片打满且无法响应任何中断呢?同时我们继续查看虚机内部 dmesg 信息。 [Mon Oct 24 22:43:47 2022] rcu: INFO: rcu_preempt self-detected stall on CPU [Mon Oct 24 22:43:47 2022] rcu: 0-...: (14984 ticks this GP) idle=ac2/1...