Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
313617 pages reserved
INFO: task init:21416 blocked for more than 140 seconds.
      Not tainted 4.9.141+ #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
init            D26264 21416      1 0x80000000
 ffff8801b7215f00 ffff88019df59080 ffff8801976b0580 ffff8801b762df00
 ffff8801db721018 ffff88015b52f418 ffffffff828075c2 ffff88015b5276f0
 ffff88015b52f3c8 ffffffff8120719b 0000000000000282 ffff8801db7218f0
Call Trace:
 [<ffffffff82808aef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff8155c739>] d_wait_lookup fs/dcache.c:2455 [inline]
 [<ffffffff8155c739>] d_alloc_parallel+0x10a9/0x1710 fs/dcache.c:2537
 [<ffffffff815378f1>] lookup_open+0x4b1/0x18b0 fs/namei.c:3134
 [<ffffffff8153d330>] do_last fs/namei.c:3315 [inline]
 [<ffffffff8153d330>] path_openat+0x1330/0x2790 fs/namei.c:3534
 [<ffffffff81541617>] do_filp_open+0x197/0x270 fs/namei.c:3568
 [<ffffffff8151b9cf>] do_open_execat+0x10f/0x640 fs/exec.c:844
 [<ffffffff8151bf43>] open_exec+0x43/0x60 fs/exec.c:876
 [<ffffffff81621636>] load_elf_binary+0x7e6/0x4bc0 fs/binfmt_elf.c:754
 [<ffffffff8151fd9f>] search_binary_handler+0x14f/0x6f0 fs/exec.c:1621
 [<ffffffff81521f69>] exec_binprm fs/exec.c:1663 [inline]
 [<ffffffff81521f69>] do_execveat_common.isra.14+0x1139/0x1ed0 fs/exec.c:1785
 [<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/2017:
 #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 init/21416:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] inode_lock_shared include/linux/fs.h:776 [inline]
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] do_last fs/namei.c:3314 [inline]
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] path_openat+0x1309/0x2790 fs/namei.c:3534
2 locks held by init/21417:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] inode_lock_shared include/linux/fs.h:776 [inline]
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] do_last fs/namei.c:3314 [inline]
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] path_openat+0x1309/0x2790 fs/namei.c:3534
2 locks held by init/21418:
 #0:  (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff81520d73>] prepare_bprm_creds+0x53/0x110 fs/exec.c:1369
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] inode_lock_shared include/linux/fs.h:776 [inline]
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] do_last fs/namei.c:3314 [inline]
 #1:  (&type->i_mutex_dir_key#3){++++++}, at: [<ffffffff8153d309>] path_openat+0x1309/0x2790 fs/namei.c:3534

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

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.141+ #1
 ffff8801d9907d08 ffffffff81b42e79 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810983b0 ffff8801d9907d40
 ffffffff81b4df89 0000000000000001 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2061 Comm: syz-fuzzer Not tainted 4.9.141+ #1
task: ffff8801cf4d0000 task.stack: ffff8801ce988000
RIP: 0010:[<ffffffff81452185>] 
c [<ffffffff81452185>] putback_inactive_pages+0xc5/0xc70 mm/vmscan.c:1645
RSP: 0000:ffff8801ce98f100  EFLAGS: 00000087
RAX: ffffea00072e73a0 RBX: ffffea000691aba0 RCX: ffff8801ce98f418
RDX: 0000000000000000 RSI: ffffffff81452162 RDI: ffffea000691ab9c
RBP: ffff8801ce98f1d0 R08: ffffea000749a320 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000002 R14: dffffc0000000000 R15: ffffea000691ab80
FS:  000000c4200271e8(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000099c148 CR3: 00000001d2ac5000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 1ffff10039d31e29
c ffffed0039d31e83
c ffffffff833d3ac0
c ffff880100000003
c
 ffffffff833d3600
c 0000000200000000
c ffff8801ce98f418
c ffffffff833d45f8
c
 ffffea000691aba8
c 0000000041b58ab3
c ffffffff82e35ba1
c ffffffff814520c0
c
Call Trace:
 [<ffffffff81453362>] shrink_inactive_list+0x632/0xca0 mm/vmscan.c:1800
 [<ffffffff81454d74>] shrink_list mm/vmscan.c:2094 [inline]
 [<ffffffff81454d74>] shrink_node_memcg.isra.19+0xa44/0x12e0 mm/vmscan.c:2377
 [<ffffffff8145578d>] shrink_node+0x17d/0x740 mm/vmscan.c:2567
 [<ffffffff814560c7>] shrink_zones mm/vmscan.c:2749 [inline]
 [<ffffffff814560c7>] do_try_to_free_pages mm/vmscan.c:2791 [inline]
 [<ffffffff814560c7>] try_to_free_pages+0x377/0xb80 mm/vmscan.c:3002
 [<ffffffff81428a01>] __perform_reclaim mm/page_alloc.c:3324 [inline]
 [<ffffffff81428a01>] __alloc_pages_direct_reclaim mm/page_alloc.c:3345 [inline]
 [<ffffffff81428a01>] __alloc_pages_slowpath mm/page_alloc.c:3697 [inline]
 [<ffffffff81428a01>] __alloc_pages_nodemask+0x981/0x1bd0 mm/page_alloc.c:3862
 [<ffffffff81415701>] __alloc_pages include/linux/gfp.h:433 [inline]
 [<ffffffff81415701>] __alloc_pages_node include/linux/gfp.h:446 [inline]
 [<ffffffff81415701>] alloc_pages_node include/linux/gfp.h:460 [inline]
 [<ffffffff81415701>] __page_cache_alloc include/linux/pagemap.h:208 [inline]
 [<ffffffff81415701>] page_cache_read mm/filemap.c:2007 [inline]
 [<ffffffff81415701>] filemap_fault+0xaf1/0x1110 mm/filemap.c:2192
 [<ffffffff816e7721>] ext4_filemap_fault+0x71/0xa0 fs/ext4/inode.c:5853
 [<ffffffff81492ef3>] __do_fault+0x223/0x500 mm/memory.c:2833
 [<ffffffff814a3696>] do_read_fault mm/memory.c:3180 [inline]
 [<ffffffff814a3696>] do_fault mm/memory.c:3315 [inline]
 [<ffffffff814a3696>] handle_pte_fault mm/memory.c:3516 [inline]
 [<ffffffff814a3696>] __handle_mm_fault mm/memory.c:3603 [inline]
 [<ffffffff814a3696>] handle_mm_fault+0x1326/0x2350 mm/memory.c:3640
 [<ffffffff810b2b33>] __do_page_fault+0x403/0xa60 arch/x86/mm/fault.c:1406
 [<ffffffff810b31e7>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469
 [<ffffffff828188b5>] page_fault+0x25/0x30 arch/x86/entry/entry_64.S:951
Code: 
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cff 
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cfe 
c98 
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cff 
c48 
c8b 
c85 
c38 
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c00 
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c48 
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cff 
cff 
cff 
c48 
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c01 
c48 
c39 
cc1 
c0f 
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c53 
c08 
c00 
c00 
c<e8> 
cd6 
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cff 
c48 
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c60 
cff 
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c48 
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cc1 
c