INFO: rcu detected stall in do_anonymous

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in do_anonymous_page (2) kernel				1	1563d	1563d	0/26	closed as invalid on 2020/01/09 08:13
upstream	INFO: rcu detected stall in do_anonymous_page kernel				5	1598d	1599d	0/26	closed as invalid on 2019/12/04 14:04

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=159881, q=219) rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4295035495-4295024994), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.2 R running task 26168 15083 9075 0x80004002 Call Trace: <IRQ> sched_show_task+0x411/0x560 kernel/sched/core.c:5954 print_other_cpu_stall kernel/rcu/tree_stall.h:430 [inline] check_cpu_stall kernel/rcu/tree_stall.h:558 [inline] rcu_pending kernel/rcu/tree.c:3030 [inline] rcu_sched_clock_irq+0x188c/0x1aa0 kernel/rcu/tree.c:2276 update_process_times+0x12d/0x180 kernel/time/timer.c:1726 tick_sched_handle kernel/time/tick-sched.c:171 [inline] tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1314 __run_hrtimer kernel/time/hrtimer.c:1517 [inline] __hrtimer_run_queues+0x3f3/0x840 kernel/time/hrtimer.c:1579 hrtimer_interrupt+0x37c/0xda0 kernel/time/hrtimer.c:1641 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 </IRQ> RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:92 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:109 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline] RIP: 0010:check_memory_region+0x84/0x2f0 mm/kasan/generic.c:192 Code: 29 ce 49 83 fe 10 7f 38 4d 85 f6 0f 84 b6 01 00 00 4c 89 cb 4c 29 d3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 45 0f b6 19 <45> 84 db 0f 85 f4 01 00 00 49 ff c1 48 ff c3 75 eb e9 87 01 00 00 RSP: 0018:ffffc9000ddf7218 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 3014a0c415865001 RBX: fffffffffffffffd RCX: ffffffff819c4d1a RDX: 0000000000000000 RSI: 0000000000000028 RDI: ffffc9000ddf7330 RBP: ffffc9000ddf7240 R08: dffffc0000000000 R09: fffff52001bbee68 R10: fffff52001bbee6b R11: 0000000000000000 R12: 1ffff92001bbee66 R13: dffffc0000000001 R14: 0000000000000005 R15: ffffc9000ddf7300 memcpy+0x28/0x60 mm/kasan/common.c:127 shrink_lruvec+0x8a/0x980 mm/vmscan.c:2455 shrink_node_memcgs+0x258/0x5b0 mm/vmscan.c:2671 shrink_node+0xb6b/0x1970 mm/vmscan.c:2777 shrink_zones+0x275/0x8a0 mm/vmscan.c:2980 do_try_to_free_pages+0x215/0xbb0 mm/vmscan.c:3033 try_to_free_mem_cgroup_pages+0x33a/0x660 mm/vmscan.c:3355 try_charge+0x5bd/0x18a0 mm/memcontrol.c:2455 mem_cgroup_try_charge+0x216/0x550 mm/memcontrol.c:6367 mem_cgroup_try_charge_delay+0x25/0xa0 mm/memcontrol.c:6382 do_anonymous_page+0x382/0x1640 mm/memory.c:3190 handle_pte_fault mm/memory.c:4031 [inline] __handle_mm_fault mm/memory.c:4163 [inline] handle_mm_fault+0x1c17/0x2900 mm/memory.c:4200 faultin_page mm/gup.c:659 [inline] __get_user_pages+0xf72/0x1610 mm/gup.c:870 populate_vma_page_range+0x1fd/0x250 mm/gup.c:1181 __mm_populate+0x268/0x3d0 mm/gup.c:1229 mm_populate include/linux/mm.h:2343 [inline] __do_sys_mlockall mm/mlock.c:823 [inline] __se_sys_mlockall+0x33f/0x380 mm/mlock.c:799 __x64_sys_mlockall+0x38/0x40 mm/mlock.c:799 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b399 Code: ad b6 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 b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6a65f9bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000097 RAX: ffffffffffffffda RBX: 00007f6a65f9c6d4 RCX: 000000000045b399 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000731 R14: 00000000004c8a7a R15: 000000000075bf2c rcu: rcu_preempt kthread starved for 10537 jiffies! g159881 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 28952 10 2 0x80004000 Call Trace: context_switch kernel/sched/core.c:3386 [inline] __schedule+0x87f/0xcd0 kernel/sched/core.c:4082 schedule+0x188/0x210 kernel/sched/core.c:4156 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895 rcu_gp_fqs_loop kernel/rcu/tree.c:1658 [inline] rcu_gp_kthread+0xe8d/0x17e0 kernel/rcu/tree.c:1818 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352