ip6_tunnel:  xmit: Local address not yet configured! INFO: rcu_sched self-detected stall on CPU 0-...: (1 GPs behind) idle=1de/140000000000002/0 softirq=797969/797972 fqs=3 (t=125000 jiffies g=424912 c=424911 q=1089) rcu_sched kthread starved for 47192 jiffies! g424912 c424911 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: 15191 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:memcmp+0xae/0x160 lib/string.c:861 RSP: 0018:ffff8801db206d18 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 00000000000000fc RBX: ffff8801db206df0 RCX: 0000000000000000 RDX: ffff8801db206e48 RSI: ffff8801c54acba8 RDI: 0000000000000000 RBP: ffff8801db206d40 R08: 0000000000000000 R09: 1ffff1003b640d74 R10: 00000000c027dfdf R11: 00000000d42bacd1 R12: dffffc0000000000 R13: 0000000000000088 R14: ffff8801c54acb60 R15: ffff8801db206dc0 find_stack lib/stackdepot.c:176 [inline] depot_save_stack+0x12c/0x490 lib/stackdepot.c:225 save_stack+0xa3/0xd0 mm/kasan/kasan.c:453 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 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3398 [inline] kmem_cache_alloc+0x11b/0x760 mm/slab.c:3560 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:__sanitizer_cov_trace_pc+0x1/0x60 kernel/kcov.c:56 RSP: 0018:ffff88019a207528 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 1ffff1003848de28 RBX: 0000000000000000 RCX: ffffc90002355000 RDX: 000000000000012a RSI: ffffffff81961ff6 RDI: ffff8801c246f150 RBP: ffff88019a2078d0 R08: ffffffff8199f768 R09: 0000000000000000 R10: ffff88019a207720 R11: ffff8801cda339b8 R12: ffff8801c246f140 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 anon_vma_interval_tree_pre_update_vma mm/mmap.c:478 [inline] __vma_adjust+0x43f/0x1790 mm/mmap.c:809 vma_adjust include/linux/mm.h:2078 [inline] __split_vma+0x4d5/0x8c0 mm/mmap.c:2581 do_munmap+0x24e/0xdf0 mm/mmap.c:2661 mmap_region+0x59e/0x15a0 mm/mmap.c:1631 do_mmap+0x69b/0xd40 mm/mmap.c:1468 do_mmap_pgoff include/linux/mm.h:2151 [inline] vm_mmap_pgoff+0x1de/0x280 mm/util.c:333 SYSC_mmap_pgoff mm/mmap.c:1518 [inline] SyS_mmap_pgoff+0x23b/0x5f0 mm/mmap.c:1476 SYSC_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:91 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x452879 RSP: 002b:00007f4ba49e5be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452879 RDX: 0000000000000003 RSI: 0000000000001000 RDI: 0000000020d9c000 RBP: 00000000000003de R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000000032 R11: 0000000000000212 R12: 00000000006f3d70 R13: 00000000ffffffff R14: 00007f4ba49e66d4 R15: 0000000000000002 BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 48s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 in-flight: 4209:bpf_map_free_deferred, 4873:cache_reap 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=2/256 pending: br_fdb_cleanup, br_fdb_cleanup workqueue events_power_efficient: flags=0x80 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 in-flight: 4873:do_cache_clean pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 pending: check_lifetime, neigh_periodic_work, 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: 1296:wb_workfn workqueue kblockd: flags=0x18 pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 pending: blk_timeout_work workqueue ipv6_addrconf: flags=0x40008 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 pending: addrconf_verify_work pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=9 idle: 4873 3295 2198 11670 12451 26574 4883 4876 pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=12 idle: 12771 5015 7309 5528 62 17703 3527 8785 21 3531 205