protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: (detected by 0, t=10502 jiffies, g=445201, q=341) rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4295209378-4295198875), jiffies_till_next_fqs=1, root ->qsmask 0x0 Call Trace: sched_show_task kernel/sched/core.c:5338 [inline] sched_show_task.cold+0x291/0x2fc kernel/sched/core.c:5313 print_other_cpu_stall kernel/rcu/tree.c:1313 [inline] check_cpu_stall kernel/rcu/tree.c:1441 [inline] rcu_pending kernel/rcu/tree.c:3103 [inline] rcu_sched_clock_irq.cold+0xa10/0xa4a kernel/rcu/tree.c:2544 update_process_times+0x32/0x80 kernel/time/timer.c:1635 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:161 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1271 __run_hrtimer kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x33e/0xde0 kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline] smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1060 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:get_scan_count mm/vmscan.c:2413 [inline] RIP: 0010:shrink_node_memcg+0x625/0x1720 mm/vmscan.c:2549 Code: 00 00 00 41 83 c7 01 bf 03 00 00 00 44 89 fe 4c 89 23 e8 ee ab de ff 48 89 d8 48 83 c0 08 41 83 ff 04 48 89 84 24 80 00 00 00 <0f> 85 b6 fc ff ff e8 50 aa de ff 48 8b 84 24 40 01 00 00 48 8b 54 RSP: 0018:ffff8881fc406e80 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8881fc406fe0 RBX: ffff8881fc406fd8 RCX: ffffffff8191b7a2 RDX: 0000000000000004 RSI: 0000000000000003 RDI: 0000000000000005 RBP: ffff8881fc4070a8 R08: ffff8880711f44c0 R09: ffffed100d905ca0 R10: ffffed100d905c9f R11: ffff88806c82e4ff R12: 0000000000000000 R13: ffff88821fff9001 R14: 0000000000000001 R15: 0000000000000004 shrink_node+0x29b/0x1680 mm/vmscan.c:2801 shrink_zones mm/vmscan.c:3034 [inline] do_try_to_free_pages+0x3cb/0x11e0 mm/vmscan.c:3096 try_to_free_mem_cgroup_pages+0x2dd/0xa30 mm/vmscan.c:3400 try_charge+0x5bd/0x1790 mm/memcontrol.c:2252 mem_cgroup_try_charge+0x24d/0x5e0 mm/memcontrol.c:5937 mem_cgroup_try_charge_delay+0x1f/0xa0 mm/memcontrol.c:5952 shmem_getpage_gfp+0x69e/0x2500 mm/shmem.c:1859 shmem_fault+0x22d/0x760 mm/shmem.c:2053 __do_fault+0x116/0x4e0 mm/memory.c:3039 do_read_fault mm/memory.c:3449 [inline] do_fault mm/memory.c:3575 [inline] handle_pte_fault mm/memory.c:3806 [inline] __handle_mm_fault+0x2c6c/0x3ec0 mm/memory.c:3930 handle_mm_fault+0x43f/0xb30 mm/memory.c:3967 faultin_page mm/gup.c:538 [inline] __get_user_pages+0x7b6/0x1a40 mm/gup.c:741 populate_vma_page_range+0x20d/0x2a0 mm/gup.c:1399 __mm_populate+0x204/0x380 mm/gup.c:1447 mm_populate include/linux/mm.h:2383 [inline] vm_mmap_pgoff+0x213/0x230 mm/util.c:367 ksys_mmap_pgoff+0xf7/0x630 mm/mmap.c:1609 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f971e525c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457e29 RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 000000000073bfa0 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 00007f971e5266d4 R13: 00000000004c3b88 R14: 00000000004d6ca0 R15: 00000000ffffffff rcu: rcu_preempt kthread starved for 10560 jiffies! g445201 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_timeout+0x4db/0xfd0 kernel/time/timer.c:1803 rcu_gp_fqs_loop kernel/rcu/tree.c:1971 [inline] rcu_gp_kthread+0x962/0x17b0 kernel/rcu/tree.c:2128 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352