ip6_tunnel: ip6gre2 xmit: Local address not yet configured! INFO: task syz-executor0:6913 blocked for more than 140 seconds. Not tainted 4.20.0-rc5+ #149 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D23384 6913 30208 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 exp_funnel_lock kernel/rcu/tree_exp.h:319 [inline] _synchronize_rcu_expedited.constprop.58+0x8df/0x9d0 kernel/rcu/tree_exp.h:620 synchronize_rcu_expedited+0x27/0xa0 kernel/rcu/tree_exp.h:758 synchronize_rcu.part.53+0x84/0x120 kernel/rcu/tree_plugin.h:857 synchronize_rcu+0x27/0xa0 kernel/rcu/tree_plugin.h:860 pfkey_release+0x395/0x570 net/key/af_key.c:193 __sock_release+0xd7/0x250 net/socket.c:579 sock_close+0x19/0x20 net/socket.c:1141 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411111 Code: 30 34 44 00 be ff ff ff ff 31 ff 31 c0 ff 15 3e 83 24 00 4c 8b 7c 24 28 4c 8b 54 24 08 45 0f b6 37 e9 fa fb ff ff 48 89 ca eb <8e> 4c 89 d7 e8 06 a2 ff ff 48 85 c0 49 89 44 24 30 0f 85 84 fc ff RSP: 002b:00007ffd5763d7f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411111 RDX: 0000001b32720000 RSI: ffffffff86604949 RDI: 0000000000000003 RBP: 0000000000000000 R08: ffffffff8139dc2b R09: 00000000eb2cd5fe R10: 00007ffd5763d720 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000159 R15: 0000000000000000 INFO: task syz-executor3:6938 blocked for more than 140 seconds. Not tainted 4.20.0-rc5+ #149 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D22312 6938 4324 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 exp_funnel_lock kernel/rcu/tree_exp.h:319 [inline] _synchronize_rcu_expedited.constprop.58+0x8df/0x9d0 kernel/rcu/tree_exp.h:620 synchronize_rcu_expedited+0x27/0xa0 kernel/rcu/tree_exp.h:758 synchronize_rcu.part.53+0x84/0x120 kernel/rcu/tree_plugin.h:857 synchronize_rcu+0x27/0xa0 kernel/rcu/tree_plugin.h:860 evdev_detach_client+0x1a3/0x290 drivers/input/evdev.c:422 evdev_release+0xac/0x1e0 drivers/input/evdev.c:481 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411111 Code: 30 34 44 00 be ff ff ff ff 31 ff 31 c0 ff 15 3e 83 24 00 4c 8b 7c 24 28 4c 8b 54 24 08 45 0f b6 37 e9 fa fb ff ff 48 89 ca eb <8e> 4c 89 d7 e8 06 a2 ff ff 48 85 c0 49 89 44 24 30 0f 85 84 fc ff RSP: 002b:00007ffe3cf5e1d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411111 RDX: 0000000000000000 RSI: 0000000000731128 RDI: 0000000000000005 RBP: 0000000000000000 R08: ffffffff8100c7ea R09: 0000000081567d19 R10: 00007ffe3cf5e100 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000062 R15: 0000000000000003 INFO: task syz-executor5:6940 blocked for more than 140 seconds. Not tainted 4.20.0-rc5+ #149 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D23240 6940 28110 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 exp_funnel_lock kernel/rcu/tree_exp.h:319 [inline] _synchronize_rcu_expedited.constprop.58+0x8df/0x9d0 kernel/rcu/tree_exp.h:620 synchronize_rcu_expedited+0x27/0xa0 kernel/rcu/tree_exp.h:758 synchronize_rcu.part.53+0x84/0x120 kernel/rcu/tree_plugin.h:857 synchronize_rcu+0x27/0xa0 kernel/rcu/tree_plugin.h:860 pptp_release+0x9c/0x250 drivers/net/ppp/pptp.c:519 __sock_release+0xd7/0x250 net/socket.c:579 sock_close+0x19/0x20 net/socket.c:1141 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411111 Code: 30 34 44 00 be ff ff ff ff 31 ff 31 c0 ff 15 3e 83 24 00 4c 8b 7c 24 28 4c 8b 54 24 08 45 0f b6 37 e9 fa fb ff ff 48 89 ca eb <8e> 4c 89 d7 e8 06 a2 ff ff 48 85 c0 49 89 44 24 30 0f 85 84 fc ff RSP: 002b:00007ffee828f880 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000411111 RDX: fffffffffffffff7 RSI: 0000000000731128 RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffee828f7b0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000190 R15: 0000000000000005 Showing all locks held in the system: 1 lock held by khungtaskd/1019: #0: 000000005640fcc1 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 1 lock held by rsyslogd/5887: #0: 00000000a2f0e170 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/6010: #0: 00000000b72c781d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000012f075d1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/6011: #0: 00000000cf08e2bc (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000001698df13 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/6012: #0: 0000000038ec8aaf (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000ecba0adf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/6013: #0: 00000000c86cdbcc (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000059bc78dc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/6014: #0: 00000000945733c7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000008f7767bf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/6015: #0: 00000000c7108136 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000decca354 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/6016: #0: 0000000053648369 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000601bd6ad (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by syz-executor2/6637: 1 lock held by syz-executor2/6672: 1 lock held by syz-executor2/6764: 1 lock held by syz-executor0/6913: #0: 000000001ed5b836 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:757 [inline] #0: 000000001ed5b836 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release+0x8b/0x250 net/socket.c:578 2 locks held by syz-executor5/6940: #0: 000000008f54d76d (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:757 [inline] #0: 000000008f54d76d (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release+0x8b/0x250 net/socket.c:578 #1: 00000000b64d9711 (sk_lock-AF_PPPOX){+.+.}, at: lock_sock include/net/sock.h:1492 [inline] #1: 00000000b64d9711 (sk_lock-AF_PPPOX){+.+.}, at: pptp_release+0x50/0x250 drivers/net/ppp/pptp.c:510 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc5+ #149 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xb51/0x1060 kernel/hung_task.c:289 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6722 Comm: syz-executor2 Not tainted 4.20.0-rc5+ #149 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:182 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:101 Code: 5d c3 66 90 55 48 89 e5 48 8b 75 08 65 48 8b 04 25 40 ee 01 00 65 8b 15 48 69 82 7e 81 e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 <83> fa 02 75 20 48 8b 88 e0 12 00 00 8b 80 dc 12 00 00 48 8b 11 48 RSP: 0018:ffff888180ea78f0 EFLAGS: 00000246 RAX: ffff88818504a1c0 RBX: 0000000000001000 RCX: ffffffff86067955 RDX: 0000000000000000 RSI: ffffffff86067a68 RDI: 0000000000000007 RBP: ffff888180ea78f0 R08: ffff88818504a1c0 R09: ffffed1036ff89a8 R10: ffff888180ea7a78 R11: ffff8881b7fc4d47 R12: ffff8881b7fc4980 R13: dffffc0000000000 R14: ffff888180ea7998 R15: ffff8881cdf43700 FS: 00007fa6b1425700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7fd69d4000 CR3: 000000018437e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: snd_pcm_plug_read_transfer+0x228/0x3b0 sound/core/oss/pcm_plugin.c:642 snd_pcm_oss_read2+0x221/0x450 sound/core/oss/pcm_oss.c:1474 snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1512 [inline] snd_pcm_oss_read+0x4e4/0x830 sound/core/oss/pcm_oss.c:2752 __vfs_read+0x117/0x9b0 fs/read_write.c:416 vfs_read+0x17f/0x3c0 fs/read_write.c:452 ksys_read+0x101/0x260 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457659 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa6b1424c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457659 RDX: 0000000000000236 RSI: 0000000020000200 RDI: 0000000000000007 RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6b14256d4 R13: 00000000004c39ff R14: 00000000004d5d88 R15: 00000000ffffffff