ip6_tunnel: ip6tnl2 xmit: Local address not yet configured! ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! INFO: task syz-executor4:32067 blocked for more than 140 seconds. Not tainted 4.14.87+ #19 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D28648 32067 1846 0x10000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:565 [inline] rwsem_down_write_failed+0x390/0x730 kernel/locking/rwsem-xadd.c:594 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:715 [inline] do_last fs/namei.c:3358 [inline] path_openat+0xf55/0x2930 fs/namei.c:3597 do_filp_open+0x197/0x270 fs/namei.c:3631 do_sys_open+0x2ef/0x580 fs/open.c:1071 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457659 RSP: 002b:00007fce32f89c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457659 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000020000140 RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce32f8a6d4 R13: 00000000004bdd13 R14: 00000000004cd7b8 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x74/0x20f kernel/locking/lockdep.c:4541 1 lock held by rsyslogd/1629: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xa2/0xc0 fs/file.c:768 2 locks held by getty/1757: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x20/0x80 drivers/tty/tty_ldisc.c:275 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1ff/0x1700 drivers/tty/n_tty.c:2156 2 locks held by syz-executor4/32067: #0: (sb_writers#4){.+.+}, at: [] sb_start_write include/linux/fs.h:1545 [inline] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 fs/namespace.c:387 #1: (&type->i_mutex_dir_key#3){++++}, at: [] inode_lock include/linux/fs.h:715 [inline] #1: (&type->i_mutex_dir_key#3){++++}, at: [] do_last fs/namei.c:3358 [inline] #1: (&type->i_mutex_dir_key#3){++++}, at: [] path_openat+0xf55/0x2930 fs/namei.c:3597 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.87+ #19 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x11b lib/dump_stack.c:53 nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x574/0xa70 kernel/hung_task.c:252 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.87+ #19 task: ffff8881d6672f00 task.stack: ffff8881d6688000 RIP: 0010:cpu_avg_load_per_task kernel/sched/fair.c:5670 [inline] RIP: 0010:fix_small_imbalance kernel/sched/fair.c:9915 [inline] RIP: 0010:calculate_imbalance kernel/sched/fair.c:10069 [inline] RIP: 0010:find_busiest_group+0x24c2/0x39a0 kernel/sched/fair.c:10174 RSP: 0018:ffff8881d75079a0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8881d656bf00 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 1ffff1103aea5467 RDI: ffff8881d752a338 RBP: 0000000000000bcd R08: 000000000000024d R09: 0000000000000002 R10: 0000000000000001 R11: ffff8881d65c2780 R12: ffff8881d7507d28 R13: 0000000000000365 R14: ffff8881d7507cf8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881d7500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000019d8000 CR3: 00000001dda26003 CR4: 00000000001606a0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: load_balance+0x3d4/0x2940 kernel/sched/fair.c:10408 rebalance_domains+0x818/0xe40 kernel/sched/fair.c:11104 run_rebalance_domains+0x622/0x8f0 kernel/sched/fair.c:11368 __do_softirq+0x20d/0x9bd kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x117/0x150 kernel/softirq.c:409 reschedule_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:811 RIP: 0010:native_safe_halt+0x2/0x10 arch/x86/include/asm/irqflags.h:57 RSP: 0018:ffff8881d668fd60 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02 RAX: 0000000000000007 RBX: ffffffffa762fa68 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8881d667372c RBP: ffffffffa7639ea8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 1ffff1103acd1fb5 R14: 0000000000000000 R15: ffffffffa7639f64 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0x50/0x380 arch/x86/kernel/process.c:564 cpuidle_idle_call kernel/sched/idle.c:159 [inline] do_idle+0x2da/0x3b0 kernel/sched/idle.c:268 cpu_startup_entry+0xc9/0xe0 kernel/sched/idle.c:374 start_secondary+0x3b0/0x4a0 arch/x86/kernel/smpboot.c:272 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 Code: 00 00 00 fc ff df 48 89 fe 48 c1 ee 03 80 3c 16 00 0f 85 1c 0c 00 00 48 85 c9 48 8b 80 38 01 00 00 74 08 31 d2 48 f7 f1 48 89 c1 <48> 89 8c 24 f0 01 00 00 be 02 00 00 00 e9 5b f3 ff ff e8 07 c8