ip6_tunnel: n xmit: Local address not yet configured! INFO: task syz-executor.5:15208 blocked for more than 140 seconds. Not tainted 4.9.141+ #23 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29816 15208 15207 0x20020000 ffff8801d2020000 ffff8801ca11dd80 ffff8801c5e79600 ffff8801d9552f80 ffff8801db721018 ffff8801c939fb50 ffffffff828075c2 0000000000000000 ffffffff83cdda10 ffff8801c939fda0 00000000000039b4 ffff8801db7218f0 Call Trace: [] schedule+0x7f/0x1b0 kernel/sched/core.c:3553 [] schedule_timeout+0x735/0xe20 kernel/time/timer.c:1771 audit_printk_skb: 1398 callbacks suppressed audit: type=1400 audit(1553337644.688:41744): avc: denied { net_admin } for pid=2098 comm="syz-executor.4" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.728:41747): avc: denied { net_admin } for pid=2101 comm="syz-executor.1" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.718:41746): avc: denied { net_admin } for pid=2098 comm="syz-executor.4" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.738:41748): avc: denied { sys_admin } for pid=2100 comm="syz-executor.2" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.738:41749): avc: denied { sys_admin } for pid=2100 comm="syz-executor.2" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.748:41750): avc: denied { net_admin } for pid=2101 comm="syz-executor.1" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.758:41751): avc: denied { net_admin } for pid=2098 comm="syz-executor.4" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.768:41752): avc: denied { sys_admin } for pid=2100 comm="syz-executor.2" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.838:41753): avc: denied { sys_admin } for pid=2100 comm="syz-executor.2" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1553337644.848:41754): avc: denied { net_admin } for pid=2100 comm="syz-executor.2" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [] down_read_failed drivers/tty/tty_ldsem.c:241 [inline] [] __ldsem_down_read_nested+0x33c/0x610 drivers/tty/tty_ldsem.c:332 [] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367 [] tty_ldisc_ref_wait+0x25/0x80 drivers/tty/tty_ldisc.c:275 [] tty_compat_ioctl+0x12d/0x270 drivers/tty/tty_io.c:3039 [] C_SYSC_ioctl fs/compat_ioctl.c:1602 [inline] [] compat_SyS_ioctl+0x12d/0x1fd0 fs/compat_ioctl.c:1549 [] do_syscall_32_irqs_on arch/x86/entry/common.c:328 [inline] [] do_fast_syscall_32+0x2f1/0xa10 arch/x86/entry/common.c:390 [] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137 Showing all locks held in the system: 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 kernel/hung_task.c:239 #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1899: #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0xac/0xd0 fs/file.c:781 2 locks held by getty/2026: #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367 #1: (&ldata->atomic_read_lock){+.+.+.}, at: [] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142 2 locks held by syz-executor.4/2098: #0: (&rq->lock){-.-.-.}, at: [] __schedule+0x13c/0x1b10 kernel/sched/core.c:3448 #1: (rcu_read_lock){......}, at: [] cpuacct_charge+0x7c/0x360 kernel/sched/cpuacct.c:354 2 locks held by kworker/1:4/6795: #0: ("events"){.+.+.+}, at: [] process_one_work+0x73c/0x15f0 kernel/workqueue.c:2085 #1: ((&rew.rew_work)){+.+...}, at: [] process_one_work+0x774/0x15f0 kernel/workqueue.c:2089 2 locks held by syz-executor.5/15207: #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367 #1: (&ldata->atomic_read_lock){+.+.+.}, at: [] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142 1 lock held by syz-executor.5/15208: #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367 5 locks held by kworker/u4:17/22232: #0: ("%s""netns"){.+.+.+}, at: [] process_one_work+0x73c/0x15f0 kernel/workqueue.c:2085 #1: (net_cleanup_work){+.+.+.}, at: [] process_one_work+0x774/0x15f0 kernel/workqueue.c:2089 #2: (net_mutex){+.+.+.}, at: [] cleanup_net+0x13f/0x8b0 net/core/net_namespace.c:439 #3: (rtnl_mutex){+.+.+.}, at: [] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 #4: (rcu_preempt_state.exp_mutex){+.+...}, at: [] exp_funnel_lock kernel/rcu/tree_exp.h:256 [inline] #4: (rcu_preempt_state.exp_mutex){+.+...}, at: [] _synchronize_rcu_expedited+0x339/0x840 kernel/rcu/tree_exp.h:569 1 lock held by syz-executor.3/22777: #0: (&sb->s_type->i_mutex_key#8){+.+.+.}, at: [] inode_lock include/linux/fs.h:766 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.+.}, at: [] __sock_release+0x8b/0x260 net/socket.c:604 1 lock held by syz-executor.5/22818: #0: (&sb->s_type->i_mutex_key#8){+.+.+.}, at: [] inode_lock include/linux/fs.h:766 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.+.}, at: [] __sock_release+0x8b/0x260 net/socket.c:604 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.141+ #23 ffff8801d9907d08 ffffffff81b42e79 0000000000000000 0000000000000000 0000000000000000 0000000000000001 ffffffff810983b0 ffff8801d9907d40 ffffffff81b4df89 0000000000000000 0000000000000000 0000000000000003 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99 [] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60 [] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [] check_hung_task kernel/hung_task.c:125 [inline] [] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline] [] watchdog+0x6ad/0xa20 kernel/hung_task.c:239 [] kthread+0x26d/0x300 kernel/kthread.c:211 [] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4408 Comm: kworker/1:3 Not tainted 4.9.141+ #23 Workqueue: events_power_efficient gc_workerc task: ffff8801d6e397c0 task.stack: ffff8801c92a8000 RIP: 0010:[] c [] trace_hardirqs_off_caller+0x1c9/0x280 kernel/locking/lockdep.c:2776 RSP: 0018:ffff8801c92afba8 EFLAGS: 00000046 RAX: 0000000000000007 RBX: 0000000000000293 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801d6e3a034 RBP: ffff8801c92afba8 R08: ffff8801d6e3a0e0 R09: 290d41b2125688ef R10: ffff8801d6e397c0 R11: 0000000000000001 R12: dffffc0000000000 R13: ffffffff833eb3c0 R14: ffffffff833eb3c8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001ae865000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801c92afbb8c ffffffff8120039dc ffff8801c92afc38c ffffffff823f715dc ffffffff823f70a6c ffffffff84b771b8c ffffffff84b77100c fffffbfff0601200c 00000200c4893f00c ffff880100010000c ffff8801d5f78138c 0000f02800000000c Call Trace: [] trace_hardirqs_off+0xd/0x10 kernel/locking/lockdep.c:2781 [] seqcount_lockdep_reader_access include/linux/seqlock.h:79 [inline] [] read_seqcount_begin include/linux/seqlock.h:163 [inline] [] nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:325 [inline] [] gc_worker+0x14d/0x610 net/netfilter/nf_conntrack_core.c:971 [] process_one_work+0x831/0x15f0 kernel/workqueue.c:2092 [] worker_thread+0xd6/0x1140 kernel/workqueue.c:2226 [] kthread+0x26d/0x300 kernel/kthread.c:211 [] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 Code: c89 ca3 c58 c08 c00 c00 c0f cb6 c14 c02 c48 c89 cf8 c83 ce0 c07 c83 cc0 c03 c38 cd0 c7c c08 c84 cd2 c0f c85 c97 c00 c00 c00 c44 c89 ca3 c74 c08 c00 c00 c5b c41 c5c c41 c5d c<5d> cc3 ce8 c50 c79 c97 c00 c85 cc0 c74 cf0 c48 cc7 cc7 c40 c4d c24 c84 c48 cb8 c00 c