device team0 left promiscuous mode device team_slave_0 left promiscuous mode device team_slave_1 left promiscuous mode rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (10500 ticks this GP) idle=4b6/1/0x4000000000000002 softirq=33991/33991 fqs=0 rcu: (t=10500 jiffies g=47765 q=60) rcu: rcu_preempt kthread starved for 10500 jiffies! g47765 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt I22736 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804 rcu_gp_kthread+0x9d9/0x2310 kernel/rcu/tree.c:2194 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Sending NMI from CPU 1 to CPUs 0: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.007 msecs NMI backtrace for cpu 0 CPU: 0 PID: 18359 Comm: syz-executor3 Not tainted 4.19.0-rc6+ #263 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:perf_exclude_event+0xd/0x1a0 kernel/events/core.c:7887 Code: fe ff ff 4c 89 ff e8 22 5a 2c 00 e9 90 fe ff ff e8 78 59 2c 00 e9 d6 fe ff ff 0f 1f 00 55 48 89 e5 41 56 41 55 49 89 f5 41 54 <49> 89 fc 53 e8 ba f8 e8 ff 49 8d bc 24 d0 01 00 00 48 b8 00 00 00 RSP: 0018:ffff8801dae07898 EFLAGS: 00000006 RAX: ffff8801d73fa100 RBX: ffff8801847b9258 RCX: ffffffff81956cbf RDX: 0000000000010000 RSI: ffff880189d1ee78 RDI: ffff8801847b9100 RBP: ffff8801dae078b0 R08: ffffed00308f725c R09: ffffed00308f725b R10: ffffed00308f725b R11: ffff8801847b92df R12: 1ffff1003b5c0f20 R13: ffff880189d1ee78 R14: ffff8801847b9100 R15: ffff880189d1ee78 FS: 00007f7ba88b5700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200000c0 CR3: 00000001c1c7d000 CR4: 00000000001406f0 Call Trace: perf_swevent_hrtimer+0x28f/0x510 kernel/events/core.c:9122 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1054 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:xfrm_sk_policy_lookup+0x254/0x640 net/xfrm/xfrm_policy.c:1198 Code: 07 8b 80 04 03 00 00 83 c2 03 38 ca 7c 08 84 c9 0f 85 b7 03 00 00 48 8d bb c0 00 00 00 23 83 c4 00 00 00 48 89 fa 48 c1 ea 03 <42> 0f b6 14 22 84 d2 74 09 80 fa 03 0f 8e 7b 03 00 00 44 8b b3 c0 RSP: 0018:ffff880189d1ef20 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff8801d2921b40 RCX: 0000000000000000 RDX: 1ffff1003a524380 RSI: ffffffff86a539ac RDI: ffff8801d2921c00 RBP: ffff880189d1efe8 R08: ffff8801d73fa100 R09: 1ffffffff1273955 R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: dffffc0000000000 R13: ffffed00313a3df0 R14: 0000000000000001 R15: ffff880189d1f6a0 xfrm_lookup_with_ifid+0x2a1/0x2b80 net/xfrm/xfrm_policy.c:2063 xfrm_lookup net/xfrm/xfrm_policy.c:2200 [inline] xfrm_lookup_route+0x3c/0x1f0 net/xfrm/xfrm_policy.c:2211 ip6_dst_lookup_flow+0x1c6/0x270 net/ipv6/ip6_output.c:1083 inet6_csk_route_socket+0x8bd/0x1020 net/ipv6/inet6_connection_sock.c:110 inet6_csk_xmit+0x118/0x630 net/ipv6/inet6_connection_sock.c:125 l2tp_xmit_core net/l2tp/l2tp_core.c:1030 [inline] l2tp_xmit_skb+0x134c/0x1670 net/l2tp/l2tp_core.c:1132 pppol2tp_sendmsg+0x4b1/0x6c0 net/l2tp/l2tp_ppp.c:329 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x51d/0x930 net/socket.c:2116 __sys_sendmmsg+0x246/0x6d0 net/socket.c:2211 __do_sys_sendmmsg net/socket.c:2240 [inline] __se_sys_sendmmsg net/socket.c:2237 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2237 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7ba88b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 RDX: 0400000000000378 RSI: 0000000020005fc0 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7ba88b56d4 R13: 00000000004c34ed R14: 00000000004d52b0 R15: 00000000ffffffff NMI backtrace for cpu 1 CPU: 1 PID: 18374 Comm: syz-executor3 Not tainted 4.19.0-rc6+ #263 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+0x1c4/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_single_cpu_backtrace include/linux/nmi.h:162 [inline] rcu_dump_cpu_stacks+0x175/0x1c2 kernel/rcu/tree.c:1340 print_cpu_stall.cold.78+0x2d3/0x524 kernel/rcu/tree.c:1478 check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3276 [inline] rcu_pending kernel/rcu/tree.c:3319 [inline] rcu_check_callbacks+0xfd9/0x1990 kernel/rcu/tree.c:2665 update_process_times+0x2d/0x70 kernel/time/timer.c:1636 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1054 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 RIP: 0010:check_memory_region+0x1f/0x1b0 mm/kasan/kasan.c:266 Code: 90 66 2e 0f 1f 84 00 00 00 00 00 48 85 f6 0f 84 3c 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 55 0f b6 d2 48 39 c7 48 89 e5 41 55 <41> 54 53 0f 86 11 01 00 00 4c 8d 5c 37 ff 48 89 fb 49 b9 00 00 00 RSP: 0018:ffff88018fbd72a0 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13 RAX: ffff7fffffffffff RBX: ffff88018fbd76d0 RCX: ffffffff816170c3 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801c46c4808 RBP: ffff88018fbd72a8 R08: ffffed00388d8902 R09: ffffed00388d8901 R10: ffffed00388d8901 R11: ffff8801c46c480b R12: ffffed0031f7aeba R13: ffff8801c46c4808 R14: 0000000000000003 R15: 0000000000000001 kasan_check_read+0x11/0x20 mm/kasan/kasan.c:272 atomic_read include/asm-generic/atomic-instrumented.h:21 [inline] virt_spin_lock arch/x86/include/asm/qspinlock.h:65 [inline] native_queued_spin_lock_slowpath+0x183/0x1120 kernel/locking/qspinlock.c:305 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:679 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:32 [inline] queued_spin_lock include/asm-generic/qspinlock.h:88 [inline] do_raw_spin_lock+0x1a7/0x200 kernel/locking/spinlock_debug.c:113 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0x35/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] l2tp_xmit_skb+0x481/0x1670 net/l2tp/l2tp_core.c:1083 pppol2tp_sendmsg+0x4b1/0x6c0 net/l2tp/l2tp_ppp.c:329 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x51d/0x930 net/socket.c:2116 __sys_sendmmsg+0x246/0x6d0 net/socket.c:2211 __do_sys_sendmmsg net/socket.c:2240 [inline] __se_sys_sendmmsg net/socket.c:2237 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2237 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7ba8851c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 RDX: 0400000000000378 RSI: 0000000020005fc0 RDI: 0000000000000006 RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7ba88526d4 R13: 00000000004c34ed R14: 00000000004d52b0 R15: 00000000ffffffff