8021q: adding VLAN 0 to HW filter on device ipvlan2723
9pnet: Insufficient options for proto=fd
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=19e/1/0x4000000000000004 softirq=241663/241664 fqs=4684 
rcu: 	 (t=10500 jiffies g=295273 q=160059)
NMI backtrace for cpu 1
CPU: 1 PID: 14664 Comm: syz-executor.2 Not tainted 4.19.136-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x15f/0x19c kernel/rcu/tree.c:1340
 print_cpu_stall kernel/rcu/tree.c:1478 [inline]
 check_cpu_stall kernel/rcu/tree.c:1550 [inline]
 __rcu_pending kernel/rcu/tree.c:3293 [inline]
 rcu_pending kernel/rcu/tree.c:3336 [inline]
 rcu_check_callbacks.cold+0x62d/0xe19 kernel/rcu/tree.c:2682
 update_process_times+0x2a/0x70 kernel/time/timer.c:1649
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168
 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278
 __run_hrtimer kernel/time/hrtimer.c:1401 [inline]
 __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1463
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1521
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:100
Code: 34 8e 87 4c 89 25 1c 0e 28 0a 41 bc f4 ff ff ff e8 c0 0d eb ff 48 c7 05 06 0e 28 0a 00 00 00 00 e9 39 ec ff ff 90 48 8b 34 24 <65> 48 8b 04 25 40 ee 01 00 65 8b 15 7c 3e 98 7e 81 e2 00 01 1f 00
RSP: 0018:ffff8880ae707610 EFLAGS: 00000213 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000502 RBX: 0000000000000000 RCX: ffffffff864c499b
RDX: 0000000000000000 RSI: ffffffff864c490d RDI: 0000000000000005
RBP: ffff88804c3ffac0 R08: 0000000000000001 R09: 00000000fffffffe
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae7077b0
R13: dffffc0000000000 R14: ffffed1015ce0f02 R15: ffffed1015ce0f00
 fib6_clean_node+0x1fd/0x510 net/ipv6/ip6_fib.c:2013
 fib6_walk_continue+0x4ff/0x8d0 net/ipv6/ip6_fib.c:1918
 fib6_walk+0x182/0x370 net/ipv6/ip6_fib.c:1966
 fib6_clean_tree+0xc2/0x100 net/ipv6/ip6_fib.c:2043
 __fib6_clean_all+0x11f/0x2a0 net/ipv6/ip6_fib.c:2059
 fib6_clean_all net/ipv6/ip6_fib.c:2070 [inline]
 fib6_run_gc+0x110/0x2d0 net/ipv6/ip6_fib.c:2126
 ip6_dst_gc+0x201/0x380 net/ipv6/route.c:2775
 dst_alloc+0x14f/0x1a0 net/core/dst.c:101
 ip6_dst_alloc+0x2e/0x100 net/ipv6/route.c:357
 icmp6_dst_alloc+0x1ab/0x660 net/ipv6/route.c:2731
 ndisc_send_skb+0xd10/0x1720 net/ipv6/ndisc.c:471
 ndisc_send_rs+0x131/0x690 net/ipv6/ndisc.c:685
 addrconf_rs_timer+0x2d9/0x640 net/ipv6/addrconf.c:3834
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1337
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1374
 __run_timers kernel/time/timer.c:1695 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1708
 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline]
RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline]
RIP: 0010:read_seqbegin include/linux/seqlock.h:433 [inline]
RIP: 0010:d_lookup+0x1cf/0x250 fs/dcache.c:2233
Code: e8 66 9f be ff 48 c7 c0 48 5b d2 88 48 c1 e8 03 80 3c 28 00 75 79 48 83 3d 85 19 22 07 00 74 35 e8 76 6d b9 ff 4c 89 e7 57 9d <0f> 1f 44 00 00 e9 4c ff ff ff e8 62 6d b9 ff 0f 0b e8 5b 6d b9 ff
RSP: 0018:ffff88820bac7ae8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: fffffbfff11a4b68 RCX: ffffc90009ee8000
RDX: 0000000000040000 RSI: ffffffff81b041ca RDI: 0000000000000246
RBP: dffffc0000000000 R08: ffffffff8b415458 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000246
R13: ffff88820bac7b70 R14: ffff888040cfe6e0 R15: 0000000000000200
 lookup_dcache+0x1e/0x130 fs/namei.c:1509
 lookup_one_len+0x149/0x190 fs/namei.c:2543
 start_creating.part.0+0x62/0x160 fs/tracefs/inode.c:336
 start_creating fs/debugfs/inode.c:301 [inline]
 __debugfs_create_file+0xb8/0x4e0 fs/debugfs/inode.c:352
 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:650 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3450 [inline]
 kvm_dev_ioctl+0xa2b/0x16e0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3477
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45cc79
Code: 2d 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f06e00a3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000fec0 RCX: 000000000045cc79
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000005
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffc1fc70e0f R14: 00007f06e00a49c0 R15: 000000000078bf0c
rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
rcu: 	1-....: (1 GPs behind) idle=19e/1/0x4000000000000004 softirq=241663/241664 fqs=4658 
rcu: 	(detected by 0, t=10503 jiffies, g=14729, q=5)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 14664 Comm: syz-executor.2 Not tainted 4.19.136-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1078 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x9f/0x1b0 kernel/rcu/tree.c:1068
Code: 08 16 00 00 4c 8d a0 f8 e9 ff ff 48 3d 20 74 d9 88 0f 84 be 00 00 00 49 8d bc 24 d8 12 00 00 48 89 f8 48 c1 e8 03 80 3c 28 00 <0f> 85 ca 00 00 00 49 8b 9c 24 d8 12 00 00 e8 0e 70 08 02 89 c0 48
RSP: 0018:ffff8880ae7072d8 EFLAGS: 00000046
RAX: 1ffffffff11b2dbb RBX: ffffffff891c67a0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff88d96dd8
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffed1015ce473a
R10: ffff8880ae7239d3 R11: ffffffff8ad3605b R12: ffffffff88d95b00
R13: ffff8880975fa4d8 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f06e00a4700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ca8660 CR3: 000000020a6f7000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_read_lock_sched_held+0xd3/0x1d0 kernel/rcu/update.c:115
 trace_hrtimer_start include/trace/events/timer.h:191 [inline]
 debug_activate kernel/time/hrtimer.c:466 [inline]
 enqueue_hrtimer+0x322/0x3d0 kernel/time/hrtimer.c:954
 __run_hrtimer kernel/time/hrtimer.c:1416 [inline]
 __hrtimer_run_queues+0xae6/0xe60 kernel/time/hrtimer.c:1463
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1521
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x14/0x50 kernel/kcov.c:101
Code: e8 c0 0d eb ff 48 c7 05 06 0e 28 0a 00 00 00 00 e9 39 ec ff ff 90 48 8b 34 24 65 48 8b 04 25 40 ee 01 00 65 8b 15 7c 3e 98 7e <81> e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 83 fa 02 75 20 48 8b 88
RSP: 0018:ffff8880ae707610 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff888205a4a1c0 RBX: 0000000000000000 RCX: ffffffff864c4916
RDX: 0000000000000502 RSI: ffffffff864c4923 RDI: 0000000000000005
RBP: ffff88803a379900 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae7077b0
R13: dffffc0000000000 R14: ffffed1015ce0f02 R15: ffffed1015ce0f00
 fib6_clean_node+0x213/0x510 net/ipv6/ip6_fib.c:1991
 fib6_walk_continue+0x4ff/0x8d0 net/ipv6/ip6_fib.c:1918
 fib6_walk+0x182/0x370 net/ipv6/ip6_fib.c:1966
 fib6_clean_tree+0xc2/0x100 net/ipv6/ip6_fib.c:2043
 __fib6_clean_all+0x11f/0x2a0 net/ipv6/ip6_fib.c:2059
 fib6_clean_all net/ipv6/ip6_fib.c:2070 [inline]
 fib6_run_gc+0x110/0x2d0 net/ipv6/ip6_fib.c:2126
 ip6_dst_gc+0x201/0x380 net/ipv6/route.c:2775
 dst_alloc+0x14f/0x1a0 net/core/dst.c:101
 ip6_dst_alloc+0x2e/0x100 net/ipv6/route.c:357
 icmp6_dst_alloc+0x1ab/0x660 net/ipv6/route.c:2731
 ndisc_send_skb+0xd10/0x1720 net/ipv6/ndisc.c:471
 ndisc_send_rs+0x131/0x690 net/ipv6/ndisc.c:685
 addrconf_rs_timer+0x2d9/0x640 net/ipv6/addrconf.c:3834
 call_timer_fn+0x177/0x700 kernel/time/timer.c:1337
 expire_timers+0x243/0x4e0 kernel/time/timer.c:1374
 __run_timers kernel/time/timer.c:1695 [inline]
 run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1708
 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:372 [inline]
 irq_exit+0x215/0x260 kernel/softirq.c:412
 exiting_irq arch/x86/include/asm/apic.h:544 [inline]
 smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline]
RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline]
RIP: 0010:read_seqbegin include/linux/seqlock.h:433 [inline]
RIP: 0010:d_lookup+0x1cf/0x250 fs/dcache.c:2233
Code: e8 66 9f be ff 48 c7 c0 48 5b d2 88 48 c1 e8 03 80 3c 28 00 75 79 48 83 3d 85 19 22 07 00 74 35 e8 76 6d b9 ff 4c 89 e7 57 9d <0f> 1f 44 00 00 e9 4c ff ff ff e8 62 6d b9 ff 0f 0b e8 5b 6d b9 ff
RSP: 0018:ffff88820bac7ae8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: fffffbfff11a4b68 RCX: ffffc90009ee8000
RDX: 0000000000040000 RSI: ffffffff81b041ca RDI: 0000000000000246
RBP: dffffc0000000000 R08: ffffffff8b415458 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000246
R13: ffff88820bac7b70 R14: ffff888040cfe6e0 R15: 0000000000000200
 lookup_dcache+0x1e/0x130 fs/namei.c:1509
 lookup_one_len+0x149/0x190 fs/namei.c:2543
 start_creating.part.0+0x62/0x160 fs/tracefs/inode.c:336
 start_creating fs/debugfs/inode.c:301 [inline]
 __debugfs_create_file+0xb8/0x4e0 fs/debugfs/inode.c:352
 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:650 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3450 [inline]
 kvm_dev_ioctl+0xa2b/0x16e0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3477
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45cc79
Code: 2d 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f06e00a3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000fec0 RCX: 000000000045cc79
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000005
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffc1fc70e0f R14: 00007f06e00a49c0 R15: 000000000078bf0c