INFO: task syz-executor793:4489 blocked for more than 120 seconds. Not tainted 4.17.0-rc4+ #52 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor793 D23464 4489 4486 0x00000000 Call Trace: context_switch kernel/sched/core.c:2848 [inline] __schedule+0x801/0x1e30 kernel/sched/core.c:3490 schedule+0xef/0x430 kernel/sched/core.c:3549 schedule_timeout+0x1b5/0x240 kernel/time/timer.c:1777 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x3e7/0x870 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:512 [inline] tls_do_encryption net/tls/tls_sw.c:217 [inline] tls_push_record+0xedc/0x13e0 net/tls/tls_sw.c:248 tls_sw_sendmsg+0x8d7/0x12b0 net/tls/tls_sw.c:440 inet_sendmsg+0x19f/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:639 __sys_sendto+0x3d7/0x670 net/socket.c:1789 __do_sys_sendto net/socket.c:1801 [inline] __se_sys_sendto net/socket.c:1797 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1797 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4457d9 RSP: 002b:00007fa388d06da8 EFLAGS: 00000216 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004457d9 RDX: 00000000fffffdef RSI: 00000000200005c0 RDI: 0000000000000022 RBP: 00000000006dac20 R08: 0000000020000000 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000000000 R13: 00007ffd5148ecaf R14: 00007fa388d079c0 R15: 0000000000000001 Showing all locks held in the system: 2 locks held by khungtaskd/892: #0: 000000009dfaae0c (rcu_read_lock){....}, at: check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline] #0: 000000009dfaae0c (rcu_read_lock){....}, at: watchdog+0x1ff/0xf60 kernel/hung_task.c:249 #1: 0000000058f79a8d (tasklist_lock){.+.+}, at: debug_show_all_locks+0xde/0x34a kernel/locking/lockdep.c:4470 1 lock held by rsyslogd/4370: #0: 0000000059c3c7ae (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1a9/0x1e0 fs/file.c:766 2 locks held by getty/4460: #0: 00000000e25a52c3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000002caea50f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4461: #0: 00000000d38c9806 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000eaffe99d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4462: #0: 00000000cec6abe7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000000afd91c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4463: #0: 000000003456fca5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000038a65d91 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4464: #0: 0000000001e783b1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000003ecd2e34 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4465: #0: 000000007ef8b451 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000006996c3ed (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4466: #0: 00000000d15d9a92 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000ee44bcf4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 1 lock held by syz-executor793/4489: #0: 0000000008c84b0d (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 0000000008c84b0d (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4494: #0: 00000000f2de7555 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000f2de7555 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4499: #0: 0000000058a54751 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 0000000058a54751 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4504: #0: 0000000045694cb9 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 0000000045694cb9 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4509: #0: 00000000b663e61f (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000b663e61f (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4514: #0: 00000000603baf06 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000603baf06 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4519: #0: 00000000344afb7e (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000344afb7e (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4524: #0: 000000004aa3e1ce (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 000000004aa3e1ce (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4529: #0: 00000000b6c4b2ea (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000b6c4b2ea (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4534: #0: 000000005bae881e (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 000000005bae881e (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4539: #0: 000000004b04f235 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 000000004b04f235 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4544: #0: 00000000b5888be7 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000b5888be7 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4549: #0: 00000000e902c819 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000e902c819 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4554: #0: 000000009cd1d95e (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 000000009cd1d95e (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4559: #0: 000000001f3edf17 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 000000001f3edf17 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 1 lock held by syz-executor793/4563: #0: 00000000802085f8 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: 00000000802085f8 (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendmsg+0x1b9/0x12b0 net/tls/tls_sw.c:384 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 892 Comm: khungtaskd Not tainted 4.17.0-rc4+ #52 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+0x1b9/0x294 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.4+0x19/0xce lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x151/0x192 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:138 [inline] check_hung_task kernel/hung_task.c:132 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline] watchdog+0xc10/0xf60 kernel/hung_task.c:249 kthread+0x345/0x410 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4486 Comm: sshd Not tainted 4.17.0-rc4+ #52 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__debug_object_init+0x25/0x12c0 lib/debugobjects.c:371 RSP: 0018:ffff8801b30f73d0 EFLAGS: 00000a02 RAX: 1ffff1003661ee3d RBX: ffff8801b30f7440 RCX: ffffffff877175fb RDX: 0000000000000001 RSI: ffffffff88d9a5e0 RDI: ffff8801b30f7440 RBP: ffff8801b30f73f0 R08: ffff8801b0a10740 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801b30f73c8 R13: dffffc0000000000 R14: ffff8801b30f74c0 R15: 0000000000000001 FS: 00007f15863b87c0(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f38c25af9ce CR3: 00000001d0b17000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_init_on_stack+0x19/0x20 lib/debugobjects.c:444 hrtimer_init_on_stack kernel/time/hrtimer.c:435 [inline] schedule_hrtimeout_range_clock+0xcc/0x470 kernel/time/hrtimer.c:1936 schedule_hrtimeout_range+0x2a/0x40 kernel/time/hrtimer.c:1989 poll_schedule_timeout+0x11a/0x200 fs/select.c:243 do_select+0x1606/0x1ae0 fs/select.c:581 core_sys_select+0x768/0xb60 fs/select.c:655 kern_select+0x1b7/0x250 fs/select.c:696 __do_sys_select fs/select.c:705 [inline] __se_sys_select fs/select.c:702 [inline] __x64_sys_select+0xbe/0x150 fs/select.c:702 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f1584758dd3 RSP: 002b:00007ffe596ca1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000017 RAX: ffffffffffffffda RBX: 00007ffe596ca280 RCX: 00007f1584758dd3 RDX: 000055a15612aab0 RSI: 000055a15612aad0 RDI: 000000000000000c RBP: 000055a1559bf8dc R08: 00007ffe596ca220 R09: 0101010101010101 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe596ca288 R13: 0000000000000000 R14: 00007ffe596ca278 R15: 00007ffe596ca27c Code: 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 48 8d 85 f8 fd ff ff 41 55 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 41 54 4c 8d 65 d8 <53> 48 89 fb 48 81 ec 30 02 00 00 48 89 85 d8 fd ff ff 4c 01 e8