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Kernel crash after enabling all 4 cores of t1042

Question asked by Chandra Shekhar on Feb 28, 2016
Latest reply on Mar 14, 2016 by Yiping Wang

Hi Team,

After enabling all the 4 cores of t1042, I am seeing kernel crash at below point.


Bman: BPID allocator includes range 32:32

Qman: FQID allocator includes range 256:512

Qman: FQID allocator includes range 32768:32768

Qman: CGRID allocator includes range 0:256

Qman: pool channel allocator includes range 1025:15

Switched to clocksource timebase

INFO: rcu_sched self-detected stall on CPU { 3}  (t=17160 jiffies g=4294967058 c=4294967057 q=32)

CPU: 3 PID: 0 Comm: swapper/3 Not tainted 3.12.19-rt30-gc29fe1a #23

Call Trace:

[e30bfd00] [c0006f74] show_stack+0x44/0x150 (unreliable)

[e30bfd40] [c069bebc] dump_stack+0x78/0xa0

[e30bfd50] [c00a0a60] rcu_check_callbacks+0x320/0x6e0

[e30bfdb0] [c003dd90] update_process_times+0x40/0x70

[e30bfdd0] [c0088f78] tick_sched_timer+0x68/0xb0

[e30bfe00] [c00561c4] __run_hrtimer.isra.27+0x54/0xe0

[e30bfe20] [c00571e4] hrtimer_interrupt+0x1b4/0x4c0

[e30bfea0] [c0009e98] timer_interrupt+0x1b8/0x1f0

[e30bfed0] [c00103f0] ret_from_except+0x0/0x18

--- Exception: 901 at arch_cpu_idle+0x24/0x70

    LR = arch_cpu_idle+0x24/0x70

[e30bff90] [c009fc28] rcu_idle_enter+0xb8/0x100 (unreliable)

[e30bffa0] [c0076604] cpu_startup_entry+0xd4/0x180

[e30bffd0] [c0011d04] start_secondary+0x224/0x240

[e30bfff0] [c0001d58] __secondary_start+0x30/0x84




Can anyone provide any inputs to debug this issue?