[kernel-xen] rcu_sched stalls issue on 3.8.12-1 and 4.2.2-5

[Yuriy Kohut]

Hi,

Does anybody faced with the following issue:

May 27 16:03:45 sv-36hv-005 kernel: INFO: rcu_sched detected stalls on CPUs/tasks: { 0} (detected by 3, t=84674 jiffies, g=2381853, c=2381852, q=17796) 
May 27 16:03:45 sv-36hv-005 kernel: Task dump for CPU 0: 
May 27 16:03:45 sv-36hv-005 kernel: cat R running task 0 6537 6500 0x00000088 
May 27 16:03:45 sv-36hv-005 kernel: ffff88001465dc70 ffffea000117d5c8 0000000000000246 0000000000000000 
May 27 16:03:45 sv-36hv-005 kernel: dead000000100100 00000000fffffffd 0000000000040002 ffffffff8100122a 
May 27 16:03:45 sv-36hv-005 kernel: ffffea00006e4600 0000000000000000 0000000000000000 ffffffffffffffff 
May 27 16:03:45 sv-36hv-005 kernel: Call Trace: 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8100122a>] ? xen_hypercall_xen_version+0xa/0x20 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8100122a>] ? xen_hypercall_xen_version+0xa/0x20 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff81009ded>] ? xen_force_evtchn_callback+0xd/0x10 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8100a5e2>] check_events+0x12/0x20 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8100a5cf>] ? xen_restore_fl_direct_reloc+0x4/0x4 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8153be96>] ? _raw_spin_unlock_irqrestore+0x16/0x20 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8111d244>] release_pages+0x184/0x1e0 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8114c484>] free_pages_and_swap_cache+0xb4/0xe0 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8104c284>] ? flush_tlb_mm_range+0x54/0x250 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8113782f>] tlb_flush_mmu+0x5f/0xa0 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8113788c>] tlb_finish_mmu+0x1c/0x50 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8113efbb>] exit_mmap+0xbb/0x160 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8153c1c4>] ? _raw_spin_lock_irqsave+0x14/0x40 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff810504c9>] mmput+0x59/0x110 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff81058341>] do_exit+0x261/0xa50 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff8116ec5e>] ? ____fput+0xe/0x10 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff81058b81>] do_group_exit+0x51/0xc0 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff81058c07>] sys_exit_group+0x17/0x20 
May 27 16:03:45 sv-36hv-005 kernel: [<ffffffff815447d9>] system_call_fastpath+0x16/0x1b


HV details:
# xm info
host                   : *********
release                : 3.8.12-1.el6xen.x86_64
version                : #1 SMP Mon May 13 11:39:02 EEST 2013
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 1995
hw_caps                : bfebfbff:28100800:00000000:00003b40:009ce3bd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 16374
free_memory            : 15791
free_cpus              : 0
xen_major              : 4
xen_minor              : 2
xen_extra              : .2
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
xen_commandline        : dom0_mem=409600
cc_compiler            : gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-3)
cc_compile_by          : mockbuild
cc_compile_domain      : crc.id.au
cc_compile_date        : Tue May  7 19:26:49 EST 2013
xend_config_format     : 4

Thanks for any help/info.
---
Yura

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