[ODROID C2] WARNING: CPU: 1 PID: 0 at kernel/time/hrtimer.c:917 hrtimer_forward

zanzibar · May 12, 2019

Hello,

I using up to date Armbian Stretch with kernel 4.19.41-meson64 #5.85 SMP PREEMPT Wed May 8 12:40:37 CEST 2019 aarch64 GNU/Linux.

Today about 2 minutes after system boot I have found this warning in kernel log:

May 12 07:51:48 xxx kernel: WARNING: CPU: 1 PID: 0 at kernel/time/hrtimer.c:917 hrtimer_forward+0x88/0xd0
May 12 07:51:48 xxx kernel: Modules linked in: cdc_ether usbnet uas xt_tcpudp nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_conntrack iptable_filter ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_connt
May 12 07:51:48 xxx kernel: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.41-meson64 #5.85
May 12 07:51:48 xxx kernel: Hardware name: Hardkernel ODROID-C2 (DT)
May 12 07:51:48 xxx kernel: pstate: 20000085 (nzCv daIf -PAN -UAO)
May 12 07:51:48 xxx kernel: pc : hrtimer_forward+0x88/0xd0
May 12 07:51:48 xxx kernel: lr : txdone_hrtimer+0xd0/0x108
May 12 07:51:48 xxx kernel: sp : ffff00000800be20
May 12 07:51:48 xxx kernel: x29: ffff00000800be20 x28: ffff80007ff8a580 
May 12 07:51:48 xxx kernel: x27: ffff00000891a6d8 x26: 0000000000000001 
May 12 07:51:48 xxx kernel: x25: 0000000000000000 x24: 0000000000000001 
May 12 07:51:48 xxx kernel: x23: ffff8000710c4be8 x22: 00000000000000f8 
May 12 07:51:48 xxx kernel: x21: ffff8000710c4bb8 x20: ffff8000710c4ac0 
May 12 07:51:48 xxx kernel: x19: 00000000000f4240 x18: 0000000000000000 
May 12 07:51:48 xxx kernel: x17: 0000000000000000 x16: 0000000000000000 
May 12 07:51:48 xxx kernel: x15: 000000000000029a x14: 0000000000000400 
May 12 07:51:48 xxx kernel: x13: 0000000000000001 x12: 0000000000000001 
May 12 07:51:48 xxx kernel: x11: 0000000000ad3d80 x10: 0000000000000040 
May 12 07:51:48 xxx kernel: x9 : ffff000008e93418 x8 : ffff800071400248 
May 12 07:51:48 xxx kernel: x7 : ffff800071400288 x6 : 00000000d138f0b4 
May 12 07:51:48 xxx kernel: x5 : 0000000000000001 x4 : ffff8000710c4be8 
May 12 07:51:48 xxx kernel: x3 : 0000002116b3f554 x2 : 00000000000f4240 
May 12 07:51:48 xxx kernel: x1 : 0000002116b3f76a x0 : 0000000000000216 
May 12 07:51:48 xxx kernel: Call trace:
May 12 07:51:48 xxx kernel:  hrtimer_forward+0x88/0xd0
May 12 07:51:48 xxx kernel:  __hrtimer_run_queues+0x120/0x1b8
May 12 07:51:48 xxx kernel:  hrtimer_interrupt+0xd4/0x250
May 12 07:51:48 xxx kernel:  arch_timer_handler_phys+0x28/0x40
May 12 07:51:48 xxx kernel:  handle_percpu_devid_irq+0x80/0x138
May 12 07:51:48 xxx kernel:  generic_handle_irq+0x24/0x38
May 12 07:51:48 xxx kernel:  __handle_domain_irq+0x5c/0xb0
May 12 07:51:48 xxx kernel:  gic_handle_irq+0x58/0xa8
May 12 07:51:48 xxx kernel:  el1_irq+0xb0/0x128
May 12 07:51:48 xxx kernel:  arch_cpu_idle+0x10/0x18
May 12 07:51:48 xxx kernel:  do_idle+0x1d4/0x298
May 12 07:51:48 xxx kernel:  cpu_startup_entry+0x20/0x28
May 12 07:51:48 xxx kernel:  secondary_start_kernel+0x194/0x1d0
May 12 07:51:48 xxx kernel: ---[ end trace dcd1d1f08e0ad792 ]---

When it happened I had one USB device connected to ODROID - E3372h LTE modem (and it was online).

But system working normally after that.

I've never had such warning before (with previous kernel - 4.19.20).

Maybe it has something to do with the last Armbian kernel update?