ip6_tunnel:  xmit: Local address not yet configured! INFO: rcu_sched self-detected stall on CPU 0-...: (124996 ticks this GP) idle=4e2/140000000000002/0 softirq=849563/849563 fqs=0 (t=125000 jiffies g=447901 c=447900 q=16186) rcu_sched kthread starved for 125000 jiffies! g447901 c447900 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0 rcu_sched R running task 23888 8 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2790 [inline] __schedule+0x8eb/0x2060 kernel/sched/core.c:3366 schedule+0xf5/0x430 kernel/sched/core.c:3425 schedule_timeout+0x150/0x250 kernel/time/timer.c:1743 rcu_gp_kthread+0x9e5/0x1930 kernel/rcu/tree.c:2247 kthread+0x35e/0x430 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:432 NMI backtrace for cpu 0 CPU: 0 PID: 24846 Comm: syz-executor5 Not tainted 4.14.0-rc8+ #115 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x122/0x180 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:156 [inline] rcu_dump_cpu_stacks+0x180/0x1d6 kernel/rcu/tree.c:1396 print_cpu_stall kernel/rcu/tree.c:1542 [inline] check_cpu_stall.isra.64+0xaae/0x1480 kernel/rcu/tree.c:1610 __rcu_pending kernel/rcu/tree.c:3373 [inline] rcu_pending kernel/rcu/tree.c:3435 [inline] rcu_check_callbacks+0x256/0xce0 kernel/rcu/tree.c:2775 update_process_times+0x30/0x60 kernel/time/timer.c:1590 tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161 tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1190 __run_hrtimer kernel/time/hrtimer.c:1213 [inline] __hrtimer_run_queues+0x349/0xe10 kernel/time/hrtimer.c:1277 hrtimer_interrupt+0x1c2/0x5e0 kernel/time/hrtimer.c:1311 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] smp_apic_timer_interrupt+0x156/0x710 arch/x86/kernel/apic/apic.c:1057 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:771 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778 [inline] RIP: 0010:kmem_cache_free+0x170/0x280 mm/slab.c:3765 RSP: 0018:ffff8801db2063c0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000003 RBX: ffff880049e7d680 RCX: 000000000006e680 RDX: 0000000000000004 RSI: ffff8801d984e680 RDI: 0000000000000282 RBP: ffff8801db2063e0 R08: 0000000000000000 R09: 1ffff1003b640bec R10: 00000000fc8e4bc6 R11: 00000000a20b7265 R12: ffff8801d984e680 R13: 0000000000000282 R14: ffffffff83f06711 R15: 0000000000000000 kfree_skbmem+0x1a1/0x1d0 net/core/skbuff.c:586 __kfree_skb net/core/skbuff.c:646 [inline] consume_skb+0x15b/0x490 net/core/skbuff.c:705 sctp_chunk_destroy net/sctp/sm_make_chunk.c:1437 [inline] sctp_chunk_put+0x29c/0x420 net/sctp/sm_make_chunk.c:1464 sctp_chunk_free+0x53/0x60 net/sctp/sm_make_chunk.c:1451 sctp_packet_pack net/sctp/output.c:485 [inline] sctp_packet_transmit+0x1248/0x3750 net/sctp/output.c:605 sctp_outq_flush+0x1216/0x4050 net/sctp/outqueue.c:1191 sctp_outq_uncork+0x5a/0x70 net/sctp/outqueue.c:772 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1822 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1222 [inline] sctp_do_sm+0x50e/0x6a30 net/sctp/sm_sideeffect.c:1193 sctp_generate_heartbeat_event+0x292/0x3f0 net/sctp/sm_sideeffect.c:406 call_timer_fn+0x233/0x830 kernel/time/timer.c:1281 expire_timers kernel/time/timer.c:1320 [inline] __run_timers+0x7fd/0xb90 kernel/time/timer.c:1620 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646 __do_softirq+0x2d7/0xb85 kernel/softirq.c:284 invoke_softirq kernel/softirq.c:364 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x177/0x710 arch/x86/kernel/apic/apic.c:1059 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:771 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778 [inline] RIP: 0010:lock_acquire+0x256/0x580 kernel/locking/lockdep.c:3997 RSP: 0018:ffff880166937470 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: ffff880170ec05c0 RCX: 0000000000000000 RDX: 1ffffffff0b98cd9 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff880166937568 R08: ffffffff816eb1e0 R09: 0000000000000000 R10: ffff880166937450 R11: ffffffff85d350c0 R12: 1ffff1002cd26e94 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:244 [inline] rcu_read_lock include/linux/rcupdate.h:631 [inline] __is_insn_slot_addr+0xb4/0x330 kernel/kprobes.c:293 is_kprobe_insn_slot include/linux/kprobes.h:317 [inline] kernel_text_address+0x132/0x140 kernel/extable.c:148 __kernel_text_address+0xd/0x40 kernel/extable.c:105 unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:18 __save_stack_trace+0x7e/0xd0 arch/x86/kernel/stacktrace.c:45 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3562 kmem_cache_zalloc include/linux/slab.h:657 [inline] inode_alloc_security security/selinux/hooks.c:234 [inline] selinux_inode_alloc_security+0xf9/0x390 security/selinux/hooks.c:2885 security_inode_alloc+0x90/0xd0 security/security.c:437 inode_init_always+0x653/0xca0 fs/inode.c:167 alloc_inode+0x82/0x180 fs/inode.c:215 new_inode_pseudo+0x69/0x190 fs/inode.c:890 sock_alloc+0x41/0x270 net/socket.c:565 __sock_create+0x148/0x850 net/socket.c:1226 sock_create net/socket.c:1302 [inline] SYSC_socket net/socket.c:1332 [inline] SyS_socket+0xeb/0x200 net/socket.c:1312 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x452879 RSP: 002b:00007fe3e6dfbbe8 EFLAGS: 00000212 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452879 RDX: 0000000000000000 RSI: 0000000000080005 RDI: 0000000000000015 RBP: 00000000000005a9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6878 R13: 00000000ffffffff R14: 00007fe3e6dfc6d4 R15: 0000000000000006 BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 126s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 pending: check_corruption, vmstat_shepherd, cache_reap workqueue events_long: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=57/256 pending: br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup , br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup, br_fdb_cleanup workqueue events_power_efficient: flags=0x80 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 pending: do_cache_clean, neigh_periodic_work workqueue mm_percpu_wq: flags=0x8 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 pending: vmstat_update workqueue netns: flags=0xe000a pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 in-flight: 3521:cleanup_net delayed: cleanup_net workqueue writeback: flags=0x4e pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 in-flight: 59:wb_workfn workqueue kblockd: flags=0x18 pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 pending: blk_timeout_work pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=14 idle: 17117 4970 3732 21 22882 10615 4085 7067 28119 12809 249 12804