netlink: 98 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 98 bytes leftover after parsing attributes in process `syz-executor.3'.
ip6_tunnel: 6tnl0 xmit: Local address not yet configured!
INFO: task syz-executor.2:3248 blocked for more than 140 seconds.
      Not tainted 4.9.141+ #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D27736  3248   2098 0x00000004
 ffff88017acbc740 ffff8801c4d5ee00 ffff8801d0ae2680 ffff8801d95117c0
 ffff8801db721018 ffff8801b20d7b88 ffffffff828075c2 0000000000000000
 ffff88017acbcff0 ffffed002f5979fd 00ff88017acbc740 ffff8801db7218f0
Call Trace:
 [<ffffffff82808aef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff828094a3>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586
 [<ffffffff8280b51d>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff8280b51d>] mutex_lock_nested+0x38d/0x900 kernel/locking/mutex.c:621
 [<ffffffff82053de2>] evdev_flush+0x72/0x120 drivers/input/evdev.c:350
 [<ffffffff81502a77>] filp_close+0xa7/0x140 fs/open.c:1129
 [<ffffffff8156b8e1>] close_files fs/file.c:406 [inline]
 [<ffffffff8156b8e1>] put_files_struct+0x151/0x250 fs/file.c:434
 [<ffffffff8156ba60>] reset_files_struct+0x80/0xa0 fs/file.c:452
 [<ffffffff8152134c>] do_execveat_common.isra.14+0x51c/0x1ed0 fs/exec.c:1817
 [<ffffffff81523662>] do_execve fs/exec.c:1829 [inline]
 [<ffffffff81523662>] SYSC_execve fs/exec.c:1910 [inline]
 [<ffffffff81523662>] SyS_execve+0x42/0x50 fs/exec.c:1905
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82817893>] 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: [<ffffffff8131c0cc>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c0cc>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fe63f>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
2 locks held by getty/2021:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by syz-executor.0/5594:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
1 lock held by syz-executor.4/12776:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
1 lock held by syz-executor.4/12825:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
1 lock held by syz-executor.5/16130:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
1 lock held by syz-executor.5/16148:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
1 lock held by syz-executor.4/17616:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
1 lock held by syz-executor.2/25232:
 #0:  (&evdev->mutex){+.+.+.}, at: [<ffffffff82053de2>] evdev_flush+0x72/0x120 drivers/input/evdev.c:350
1 lock held by syz-executor.2/29942:
 #0:  (&evdev->mutex){+.+.+.}, at: [<ffffffff82053de2>] evdev_flush+0x72/0x120 drivers/input/evdev.c:350
1 lock held by syz-executor.2/22375:
 #0:  (&evdev->mutex){+.+.+.}, at: [<ffffffff82053de2>] evdev_flush+0x72/0x120 drivers/input/evdev.c:350
1 lock held by syz-executor.2/22381:
 #0:  (&evdev->mutex){+.+.+.}, at: [<ffffffff82053de2>] evdev_flush+0x72/0x120 drivers/input/evdev.c:350
2 locks held by syz-executor.5/26355:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by syz-executor.5/26371:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by syz-executor.2/3248:
 #0:  (&evdev->mutex){+.+.+.}, at: [<ffffffff82053de2>] evdev_flush+0x72/0x120 drivers/input/evdev.c:350

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.141+ #1
 ffff8801d9907d08 ffffffff81b42e79 0000000000000000 0000000000000000
 0000000000000000 0000000000000001 ffffffff810983b0 ffff8801d9907d40
 ffffffff81b4df89 0000000000000000 0000000000000000 0000000000000002
Call Trace:
 [<ffffffff81b42e79>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b42e79>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b4df89>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b4df1c>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff810984b4>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131c65d>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131c65d>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131c65d>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131c65d>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff81142c3d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82817a5c>] 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
CPU: 1 PID: 14231 Comm: syz-executor.5 Not tainted 4.9.141+ #1
task: ffff8801a4f80000 task.stack: ffff880190fe8000
RIP: 0033:[<0000000000401597>] 
c [<0000000000401597>] 0x401597
RSP: 002b:00007f1c2bb9e690  EFLAGS: 00000206
RAX: 00000000471feec5 RBX: 000000000000000b RCX: 0000000000457e39
RDX: d66b0dd89ab624d1 RSI: 00007f1c2bb9e6c0 RDI: 000000000000000b
RBP: 0000000000000000 R08: 00b1a54600000039 R09: 0000000000000000
R10: 9200000008000004 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f1c2bb9f700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000208f0000 CR3: 00000001a4da7000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400