raw_sendmsg: syz-executor.2 forgot to set AF_INET. Fix it! sched: DL replenish lagged too much INFO: task udevd:575 blocked for more than 140 seconds. Not tainted 4.9.168+ #40 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. udevd D27656 575 470 0x00000000 ffff8801d04197c0 0000000000000000 ffff8801db621000 ffffffff83031180 ffff8801db621018 ffff8801d044f990 ffffffff8280028e 0000000000000246 ffff8801d04197c0 0000000000000000 ffff8801db6218f0 1ffff1003a089f21 Call Trace: [<00000000c5645bb7>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<00000000924b56a1>] __rt_mutex_slowlock+0x99/0x290 kernel/locking/rtmutex.c:1221 [<00000000aebd242e>] rt_mutex_slowlock+0x199/0x4c0 kernel/locking/rtmutex.c:1293 [<00000000bb6edbed>] rt_mutex_fastlock kernel/locking/rtmutex.c:1439 [inline] [<00000000bb6edbed>] rt_mutex_lock+0x2d/0x40 kernel/locking/rtmutex.c:1499 [<00000000af30ecd7>] process_notifier drivers/misc/uid_sys_stats.c:636 [inline] [<00000000af30ecd7>] process_notifier+0x96/0x670 drivers/misc/uid_sys_stats.c:625 [<000000006913bda0>] notifier_call_chain+0xb4/0x1d0 kernel/notifier.c:93 [<0000000034faafc7>] __blocking_notifier_call_chain kernel/notifier.c:317 [inline] [<0000000034faafc7>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] [<0000000034faafc7>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] [<0000000034faafc7>] blocking_notifier_call_chain+0x80/0xa0 kernel/notifier.c:325 [<00000000fa206564>] profile_task_exit+0x1f/0x30 kernel/profile.c:140 [<00000000f372e99b>] do_exit+0x90/0x2aa0 kernel/exit.c:744 [<00000000dadef510>] do_group_exit+0x111/0x300 kernel/exit.c:945 [<00000000fcdeda7f>] SYSC_exit_group kernel/exit.c:956 [inline] [<00000000fcdeda7f>] SyS_exit_group+0x1d/0x20 kernel/exit.c:954 [<0000000075afb1f9>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285 [<00000000a8a8b071>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Showing all locks held in the system: 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [<00000000f773266b>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline] #0: (rcu_read_lock){......}, at: [<00000000f773266b>] watchdog+0x13c/0xae0 kernel/hung_task.c:239 #1: (tasklist_lock){.+.+..}, at: [<00000000eef172f6>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4339 1 lock held by udevd/575: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by udevd/576: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by rsyslogd/1898: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000f70943c3>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2025: #0: (&tty->ldisc_sem){++++++}, at: [<00000000db6db0bf>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+...}, at: [<00000000d8f930bd>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.3/2109: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.4/2110: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.3/5946: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.3/5955: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.3/5976: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.3/5977: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.4/5947: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/5978: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/5979: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/5980: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/5981: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/5982: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/5983: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<000000002b3a0b58>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.168+ #40 ffff8801d98d7cc8 ffffffff81b4f5d1 0000000000000000 0000000000000000 0000000000000000 ffffffff81097401 dffffc0000000000 ffff8801d98d7d00 ffffffff81b5a86c 0000000000000000 0000000000000000 0000000000000000 Call Trace: [<000000008dc6979c>] __dump_stack lib/dump_stack.c:15 [inline] [<000000008dc6979c>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<000000001fdd051a>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<00000000f063eebf>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<000000009c0a0dc8>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<0000000093aa4f13>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<0000000093aa4f13>] check_hung_task kernel/hung_task.c:125 [inline] [<0000000093aa4f13>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline] [<0000000093aa4f13>] watchdog+0x661/0xae0 kernel/hung_task.c:239 [<000000007a21722e>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000fa99d49e>] 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 skipped: idling at pc 0xffffffff8280f302