binder: 8862:8868 ioctl 40046207 0 returned -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 8858:8860 ioctl 40046207 0 returned -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 8876:8879 ioctl 40046207 0 returned -16 INFO: task init:27449 blocked for more than 140 seconds. Not tainted 4.9.194+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D28872 27449 1 0x00000000 0000000000000083 ffff8801ac84af80 ffff8801d2c9f900 ffff8801db621000 ffff8801ac848000 ffff8801db621018 ffff8801ad9675a0 ffffffff8281af8e ffffffff810ae920 0000000000000000 0000000000000000 ffff8801db6218f0 Call Trace: [<000000002cb7e291>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<00000000823e0168>] schedule_timeout+0x766/0xe50 kernel/time/timer.c:1771 [<000000008796b4f1>] __down_common kernel/locking/semaphore.c:221 [inline] [<000000008796b4f1>] __down+0x190/0x2b0 kernel/locking/semaphore.c:238 [<00000000b89d677c>] down+0x64/0x90 kernel/locking/semaphore.c:61 [<000000001cb51a3b>] console_lock+0x2c/0x80 kernel/printk/printk.c:2217 [<000000004297a6de>] console_device+0x1c/0xc0 kernel/printk/printk.c:2554 [<00000000526170ba>] tty_lookup_driver drivers/tty/tty_io.c:2018 [inline] [<00000000526170ba>] tty_open_by_driver drivers/tty/tty_io.c:2063 [inline] [<00000000526170ba>] tty_open+0x796/0xe10 drivers/tty/tty_io.c:2140 [<00000000890309a7>] chrdev_open+0x230/0x630 fs/char_dev.c:398 [<00000000f343fec3>] do_dentry_open+0x422/0xd20 fs/open.c:791 [<0000000076cdfb0b>] vfs_open+0x105/0x230 fs/open.c:904 [<000000006e2f7a37>] do_last fs/namei.c:3541 [inline] [<000000006e2f7a37>] path_openat+0xbf5/0x2f60 fs/namei.c:3665 [<00000000dba503c4>] do_filp_open+0x1a1/0x280 fs/namei.c:3699 [<00000000efbaf813>] do_sys_open+0x2f0/0x610 fs/open.c:1097 [<00000000dd7024d7>] SYSC_open fs/open.c:1115 [inline] [<00000000dd7024d7>] SyS_open+0x2d/0x40 fs/open.c:1110 [<000000006eeeeb91>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000046654250>] 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: [<00000000e41a2f33>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<00000000e41a2f33>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<00000000b0644570>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1896: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000411d7054>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2023: #0: (&tty->ldisc_sem){++++++}, at: [<00000000f34f5ced>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+...}, at: [<000000004ece45c1>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.5/2100: #0: (&xt[i].mutex){+.+.+.}, at: [<000000002541e17f>] xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1027 1 lock held by syz-executor.0/2109: #0: (&xt[i].mutex){+.+.+.}, at: [<000000002541e17f>] xt_find_table_lock+0x3c/0x3d0 net/netfilter/x_tables.c:1027 1 lock held by init/27449: #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/27450: #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/27455: #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/27456: #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/27457: #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/27458: #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000002f2435da>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.194+ #0 ffff8801d98d7cc8 ffffffff81b67001 0000000000000001 0000000000000000 0000000000000001 ffffffff81099d01 dffffc0000000000 ffff8801d98d7d00 ffffffff81b7229c 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<0000000059dcd61f>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000059dcd61f>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<000000005a68b836>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<000000003388c87f>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<00000000457fda41>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<0000000017e2f2cf>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<0000000017e2f2cf>] check_hung_task kernel/hung_task.c:126 [inline] [<0000000017e2f2cf>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<0000000017e2f2cf>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<00000000fbc2f19e>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000ce700d5e>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 24552 Comm: kworker/u4:2 Not tainted 4.9.194+ #0 task: 000000005ace9c0c task.stack: 000000000ca2742d RIP: 0010:[] c [<0000000065e0844a>] wq_worker_sleeping+0x1/0x210 kernel/workqueue.c:879 RSP: 0018:ffff8801d6597bf8 EFLAGS: 00000002 RAX: 0000000000000007 RBX: 0000000000000001 RCX: 1ffffffff067e07c RDX: 0000000000000000 RSI: ffff8801a10adf80 RDI: ffff8801a10adf00 RBP: ffff8801d6597cd8 R08: ffff8801a10adfa8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000021000 R13: ffff8801db621000 R14: ffff8801a10adf5c R15: ffff8801a10adf00 FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000130 CR3: 00000001c9631000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801d6597cd8c ffffffff8281b631c ffff8801c736f810c ffff8801a10adf00c 00ff8801d6597c28c ffff8801db6218f0c 1ffff1003acb2f8ac ffff8801db621918c ffff8801db621018c ffff8801a10ae578c ffff8801db621000c 0000000041b58ab3c Call Trace: [<000000002cb7e291>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<000000007da0a07a>] worker_thread+0x15e/0x11d0 kernel/workqueue.c:2272 [<00000000fbc2f19e>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000ce700d5e>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Code: ce6 c66 c3c c00 ce9 c54 cff cff cff ce8 cbc c66 c3c c00 ce9 c74 cff cff cff c4c c89 cf7 ce8 ccf c66 c3c c00 ceb ccf c0f c1f c00 c66 c2e c0f c1f c84 c00 c00 c00 c00 c00 c55 c<48> c89 ce5 c41 c54 c49 c89 cfc c53 ce8 c21 ca5 c1e c00 c4c c89 ce7 ce8 ce9 c09 c01 c