ip6_tunnel:  xmit: Local address not yet configured! INFO: rcu_sched self-detected stall on CPU 0-...: (124995 ticks this GP) idle=05a/140000000000002/0 softirq=554647/554648 fqs=2 (t=125000 jiffies g=287692 c=287691 q=1152) rcu_sched kthread starved for 124989 jiffies! g287692 c287691 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1 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: 31406 Comm: syz-executor5 Not tainted 4.14.0-rc8+ #116 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:in_irqentry_text mm/kasan/kasan.c:417 [inline] RIP: 0010:filter_irq_stacks mm/kasan/kasan.c:430 [inline] RIP: 0010:save_stack+0x72/0xd0 mm/kasan/kasan.c:448 RSP: 0018:ffff8801db206da8 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000004 RBX: 0000000001088020 RCX: 000000000000001b RDX: ffffffff81a3c91e RSI: ffff8801db206dc0 RDI: ffffffff84ec2070 RBP: ffff8801db206fc8 R08: 0000000000000000 R09: 1ffff1003b640d74 R10: ffff8801db206b68 R11: ffffffff85d350c0 R12: ffff880009d271c0 R13: 0000000001088020 R14: ffff880009d271c0 R15: ffff8801d384a940 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] sctp_chunkify+0xce/0x3f0 net/sctp/sm_make_chunk.c:1326 _sctp_make_chunk+0x13c/0x260 net/sctp/sm_make_chunk.c:1394 sctp_make_control+0x39/0x150 net/sctp/sm_make_chunk.c:1424 sctp_make_heartbeat+0x88/0x400 net/sctp/sm_make_chunk.c:1148 sctp_sf_heartbeat.isra.15+0x26/0x180 net/sctp/sm_statefuns.c:970 sctp_sf_sendbeat_8_3+0x36b/0x520 net/sctp/sm_statefuns.c:1014 sctp_do_sm+0x18a/0x6a30 net/sctp/sm_sideeffect.c:1190 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:fsnotify+0x187/0x1af0 fs/notify/fsnotify.c:255 RSP: 0018:ffff8801721579c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000001 RDX: 1ffff1002e42af55 RSI: 0000000000020000 RDI: ffff880172157a68 RBP: ffff880172157dd0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8801d09444c0 R12: ffff8801ce3cc350 R13: ffff8801d4780630 R14: 0000000000000004 R15: ffff880172157da8 fsnotify_perm include/linux/fsnotify.h:56 [inline] security_file_permission+0x17f/0x1e0 security/security.c:868 rw_verify_area+0xde/0x2b0 fs/read_write.c:386 vfs_read+0xf2/0x350 fs/read_write.c:443 SYSC_read fs/read_write.c:573 [inline] SyS_read+0xef/0x220 fs/read_write.c:566 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x40cad0 RSP: 002b:0000000000a6fa18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000001aea914 RCX: 000000000040cad0 RDX: 00000000000003e8 RSI: 0000000000a6fb50 RDI: 0000000000000012 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000001aea940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000005415 R13: 000000000000001d R14: 00000000000eec15 R15: 0000000000000016 BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 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=4/256 in-flight: 23:bpf_map_free_deferred pending: check_corruption, vmstat_shepherd, cache_reap workqueue events_long: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=13/256 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 workqueue events_unbound: flags=0x2 pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 in-flight: 4403:call_usermodehelper_exec_work workqueue events_power_efficient: flags=0x80 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 pending: gc_worker, 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 writeback: flags=0x4e pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 in-flight: 32:wb_workfn workqueue ipv6_addrconf: flags=0x40008 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 pending: addrconf_verify_work workqueue krdsd: flags=0xe000a pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 pending: rds_connect_worker delayed: rds_connect_worker, rds_connect_worker, rds_connect_worker, rds_connect_worker pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=120s workers=9 idle: 1299 3711 24240 23023 3 1361 19794 26767 pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=13 idle: 80 3494 27615 21 32178 3506 16766 3443 4187 31932 3514