rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10500 ticks this GP) idle=e5a/1/0x4000000000000004 softirq=49834/49834 fqs=5248 (t=10502 jiffies g=60585 q=1540) NMI backtrace for cpu 0 CPU: 0 PID: 26413 Comm: blkid Not tainted 5.3.0-rc8+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x2f8 lib/dump_stack.c:113 nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x15a/0x220 kernel/rcu/tree_stall.h:254 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline] check_cpu_stall kernel/rcu/tree_stall.h:529 [inline] rcu_pending kernel/rcu/tree.c:2736 [inline] rcu_sched_clock_irq+0xb95/0x16d0 kernel/rcu/tree.c:2183 update_process_times+0x134/0x190 kernel/time/timer.c:1639 tick_sched_handle kernel/time/tick-sched.c:167 [inline] tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1296 __run_hrtimer kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x403/0x850 kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1509 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:830 RIP: 0010:__list_add include/linux/list.h:63 [inline] RIP: 0010:list_add_tail include/linux/list.h:93 [inline] RIP: 0010:list_move_tail include/linux/list.h:214 [inline] RIP: 0010:hhf_dequeue+0x558/0xaa0 net/sched/sch_hhf.c:439 Code: 55 a8 e8 eb 61 47 fd 84 c0 74 75 e8 f2 2b 67 fb 42 80 3c 23 00 48 8b 5d b0 74 08 48 89 df e8 cf 27 a0 fb 48 8b 45 c0 48 89 03 <48> 89 c3 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 b2 27 a0 fb RSP: 0018:ffff8880aea09288 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff888065c27978 RBX: ffff888065c27a18 RCX: ffff8880678b4580 RDX: 0000000000000701 RSI: ffff888065c27a10 RDI: ffff888065c27978 RBP: ffff8880aea09330 R08: ffffffff860c5d6a R09: 0000000000000000 R10: fffffbfff117be8d R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888065c27680 R14: ffff888065c27a10 R15: ffff888065c27a00 dequeue_skb net/sched/sch_generic.c:258 [inline] qdisc_restart net/sched/sch_generic.c:361 [inline] __qdisc_run+0x217/0x1b30 net/sched/sch_generic.c:379 __dev_xmit_skb net/core/dev.c:3533 [inline] __dev_queue_xmit+0x1161/0x3020 net/core/dev.c:3838 dev_queue_xmit+0x17/0x20 net/core/dev.c:3902 br_dev_queue_push_xmit+0x551/0x650 net/bridge/br_forward.c:52 NF_HOOK include/linux/netfilter.h:305 [inline] br_forward_finish net/bridge/br_forward.c:65 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] __br_forward+0x439/0x720 net/bridge/br_forward.c:109 deliver_clone net/bridge/br_forward.c:125 [inline] maybe_deliver net/bridge/br_forward.c:181 [inline] br_flood+0x52e/0x840 net/bridge/br_forward.c:223 br_dev_xmit+0xcb6/0x1100 net/bridge/br_device.c:96 __netdev_start_xmit include/linux/netdevice.h:4406 [inline] netdev_start_xmit include/linux/netdevice.h:4420 [inline] xmit_one net/core/dev.c:3280 [inline] dev_hard_start_xmit+0x1c1/0x3f0 net/core/dev.c:3296 __dev_queue_xmit+0x1e86/0x3020 net/core/dev.c:3869 dev_queue_xmit+0x17/0x20 net/core/dev.c:3902 neigh_resolve_output+0x60c/0x6b0 net/core/neighbour.c:1490 neigh_output include/net/neighbour.h:511 [inline] ip6_finish_output2+0x102c/0x13d0 net/ipv6/ip6_output.c:116 __ip6_finish_output+0x693/0x910 net/ipv6/ip6_output.c:142 ip6_finish_output+0x52/0x1e0 net/ipv6/ip6_output.c:152 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x26f/0x390 net/ipv6/ip6_output.c:175 dst_output include/net/dst.h:436 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0xa35/0xe40 net/ipv6/ndisc.c:504 ndisc_send_rs+0x4ec/0x680 net/ipv6/ndisc.c:698 addrconf_rs_timer+0x22e/0x5f0 net/ipv6/addrconf.c:3879 call_timer_fn+0x95/0x170 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers+0x79e/0x970 kernel/time/timer.c:1685 run_timer_softirq+0x4a/0x90 kernel/time/timer.c:1698 __do_softirq+0x333/0x7c4 arch/x86/include/asm/paravirt.h:778 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x227/0x230 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:537 [inline] smp_apic_timer_interrupt+0x113/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:768 [inline] RIP: 0010:qlink_free+0x91/0xb0 mm/kasan/quarantine.c:151 Code: dd 06 00 74 35 4c 89 f7 57 9d 0f 1f 44 00 00 e8 05 7f cc ff eb 19 e8 9e 7c cc ff 48 83 3d d6 f5 dd 06 00 74 17 4c 89 f7 57 9d <0f> 1f 44 00 00 5b 41 5e 41 5f 5d c3 0f 0b 0f 0b 0f 0b 0f 0b 90 66 RSP: 0018:ffff888064677878 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff117c400 RBX: ffff8880971d8400 RCX: ffff8880678b4580 RDX: 0000000000000000 RSI: ffffffff81ac8d03 RDI: 0000000000000286 RBP: ffff888064677890 R08: ffffffff81790e74 R09: ffffed1025fff979 R10: ffffed1025fff979 R11: 0000000000000000 R12: ffff8880971d8400 R13: 0000000000001000 R14: 0000000000000286 R15: ffff8880aa5918c0 qlist_free_all mm/kasan/quarantine.c:167 [inline] quarantine_reduce+0x163/0x1d0 mm/kasan/quarantine.c:260 __kasan_kmalloc+0x46/0x1b0 mm/kasan/common.c:474 kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:501 slab_post_alloc_hook mm/slab.h:520 [inline] slab_alloc mm/slab.c:3319 [inline] __do_kmalloc mm/slab.c:3653 [inline] __kmalloc+0x22b/0x340 mm/slab.c:3664 kmalloc include/linux/slab.h:557 [inline] tomoyo_realpath_from_path+0xdc/0x7c0 security/tomoyo/realpath.c:277 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x192/0x850 security/tomoyo/file.c:822 tomoyo_inode_getattr+0x1c/0x20 security/tomoyo/tomoyo.c:129 security_inode_getattr+0xd5/0x150 security/security.c:1182 vfs_getattr+0x2a/0x6d0 fs/stat.c:115 vfs_statx_fd fs/stat.c:145 [inline] vfs_fstat include/linux/fs.h:3204 [inline] __do_sys_newfstat fs/stat.c:378 [inline] __se_sys_newfstat fs/stat.c:375 [inline] __x64_sys_newfstat+0xa3/0x130 fs/stat.c:375 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f517bf16174 Code: b8 ff ff ff ff c3 f7 d8 89 05 2c b0 20 00 83 c8 ff c3 90 90 90 90 83 ff 01 89 f0 77 19 48 63 f8 48 89 d6 b8 05 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 14 f3 c3 66 90 c7 05 fa af 20 00 16 00 00 00 RSP: 002b:00007ffc1a1eb5f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000005 RAX: ffffffffffffffda RBX: 0000000000400f31 RCX: 00007f517bf16174 RDX: 00007ffc1a1eb6a0 RSI: 00007ffc1a1eb6a0 RDI: 0000000000000003 RBP: 00007ffc1a1eb760 R08: 00007f517c1211c8 R09: 0000000000000001 R10: 2e6f732e64696b6c R11: 0000000000000246 R12: 00007ffc1a1eb800 R13: 00007f517c1211c8 R14: 0000000000000001 R15: 00007f517c121570