INFO: task syz-executor.3:29749 blocked for more than 143 seconds. Not tainted 5.1.0+ #10 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28864 29749 29629 0x00004006 Call Trace: context_switch kernel/sched/core.c:2817 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3444 schedule+0xa8/0x260 kernel/sched/core.c:3508 schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783 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+0x29c/0x440 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:680 [inline] crypto_wait_req include/linux/crypto.h:675 [inline] tls_sw_free_resources_tx+0x51f/0x6e0 net/tls/tls_sw.c:2070 tls_sk_proto_close+0x5ef/0x770 net/tls/tls_main.c:289 inet_release+0xff/0x1e0 net/ipv4/af_inet.c:432 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:474 __sock_release+0xce/0x2a0 net/socket.c:607 sock_close+0x1b/0x30 net/socket.c:1279 __fput+0x2ff/0x890 fs/file_table.c:279 ____fput+0x16/0x20 fs/file_table.c:312 task_work_run+0x145/0x1c0 kernel/task_work.c:113 get_signal+0x1dda/0x2240 kernel/signal.c:2431 do_signal+0x87/0x1900 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x58e/0x680 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458da9 Code: 05 ac c9 45 00 48 89 04 24 48 c7 44 24 08 01 00 00 00 e8 6a 3e fd ff 48 8b 44 24 18 48 89 04 24 e8 0c 3d fd ff 48 8d 05 85 c9 <45> 00 48 89 04 24 48 c7 44 24 08 01 00 00 00 e8 43 3e fd ff 48 8b RSP: 002b:00007f3493f81c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000458da9 RDX: 0000000000000015 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 000000000073c0e0 R08: 0000000000000010 R09: 0000000000000000 R10: 00000000200003c0 R11: 0000000000000246 R12: 00007f3493f826d4 R13: 00000000004c7324 R14: 00000000004dd0e0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1041: #0: 0000000009046d64 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5148 1 lock held by rsyslogd/8859: #0: 0000000069bb90d6 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/8949: #0: 00000000c268f7a1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000058e12d9f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8950: #0: 00000000fcd2de3a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000005b1c099d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8951: #0: 000000006e9204a4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000b0d255e5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8952: #0: 000000003041c579 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000004e59cc28 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8953: #0: 0000000097f352ae (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000e23b528b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8954: #0: 00000000d9064990 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000204a291d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8955: #0: 00000000e7451fa8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000817da2a1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by syz-executor.3/29749: #0: 000000004524b5f3 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:778 [inline] #0: 000000004524b5f3 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release+0x89/0x2a0 net/socket.c:606 #1: 000000005d334fd1 (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1525 [inline] #1: 000000005d334fd1 (sk_lock-AF_INET6){+.+.}, at: tls_sk_proto_close+0xd6/0x770 net/tls/tls_main.c:271 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1041 Comm: khungtaskd Not tainted 5.1.0+ #10 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+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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:204 [inline] watchdog+0x9b7/0xec0 kernel/hung_task.c:288 kthread+0x354/0x420 kernel/kthread.c:253 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9309 Comm: kworker/u4:8 Not tainted 5.1.0+ #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: 0x0 (bat_events) RIP: 0010:lookup_object lib/debugobjects.c:154 [inline] RIP: 0010:debug_object_deactivate lib/debugobjects.c:542 [inline] RIP: 0010:debug_object_deactivate+0x141/0x360 lib/debugobjects.c:529 Code: 03 42 80 3c 28 00 0f 85 ee 01 00 00 4c 8b a3 80 1a 74 8a 31 db 4d 85 e4 0f 84 14 01 00 00 49 bd 00 00 00 00 00 fc ff df eb 1f <4c> 89 e2 48 c1 ea 03 42 80 3c 2a 00 0f 85 8e 01 00 00 4d 8b 24 24 RSP: 0018:ffff888060cb7c40 EFLAGS: 00000097 RAX: 1ffffffff1500ef8 RBX: 000000000000000c RCX: ffffffff815845ea RDX: 1ffff1101322e03b RSI: ffffffff88b71200 RDI: ffff8880991701d8 RBP: ffff888060cb7d30 R08: 1ffff1100c196f74 R09: ffffffff8a8077c8 R10: 0000000000000082 R11: 0000000000000003 R12: ffff8880991701c0 R13: dffffc0000000000 R14: 1ffff1100c196f8c R15: ffff88806ad09430 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000148 CR3: 00000000a024d000 CR4: 00000000001406e0 Call Trace: debug_work_deactivate kernel/workqueue.c:498 [inline] process_one_work+0x3a9/0x1790 kernel/workqueue.c:2199 worker_thread+0x98/0xe40 kernel/workqueue.c:2414 kthread+0x354/0x420 kernel/kthread.c:253 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352