INFO: task jbd2/sda1-8:354 blocked for more than 140 seconds.
      Not tainted 4.9.129+ #45
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
jbd2/sda1-8     D26504   354      2 0x80000000
 ffff8801d51b4740 0000000000000000 ffff8801d1f84200 ffffffff83029180
 ffff8801db621018 ffff8801d53f7880 ffffffff827f2ab2 ffff8801d53f7b68
 0000000000000282 0000000041b58ab3 00ffffff82e29a72 ffff8801db6218f0
Call Trace:
 [<ffffffff827f3fdf>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff817f02a5>] jbd2_journal_commit_transaction+0x725/0x65e0 fs/jbd2/commit.c:444
 [<ffffffff8180910a>] kjournald2+0x22a/0x830 fs/jbd2/journal.c:224
 [<ffffffff8114272d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82802edc>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373

Showing all locks held in the system:
2 locks held by khungtaskd/24:
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131b83c>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131b83c>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fdfe4>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
3 locks held by rs:main Q:Reg/1893:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff8156c9ec>] __fdget_pos+0xac/0xd0 fs/file.c:781
 #1:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150ab6b>] file_start_write include/linux/fs.h:2640 [inline]
 #1:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150ab6b>] vfs_write+0x3eb/0x520 fs/read_write.c:556
 #2:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff816b29e2>] inode_lock include/linux/fs.h:766 [inline]
 #2:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff816b29e2>] ext4_file_write_iter+0x122/0xd70 fs/ext4/file.c:100
2 locks held by getty/2023:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82800e02>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d2abd2>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
4 locks held by kworker/u4:2/2203:
 #0:  ("writeback"){++++.+}, at: [<ffffffff81130abc>] process_one_work+0x73c/0x1530 kernel/workqueue.c:2085
 #1:  ((&(&wb->dwork)->work)){+.+.+.}, at: [<ffffffff81130af4>] process_one_work+0x774/0x1530 kernel/workqueue.c:2089
 #2:  (&type->s_umount_key#32){++++++}, at: [<ffffffff81514760>] trylock_super+0x20/0xf0 fs/super.c:393
 #3:  (&sbi->s_journal_flag_rwsem){++++.+}, at: [<ffffffff8143395f>] do_writepages+0xef/0x1d0 mm/page-writeback.c:2331
1 lock held by syz-executor3/5687:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
1 lock held by syz-executor3/7557:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
1 lock held by syz-executor3/7590:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
1 lock held by syz-executor3/9503:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
1 lock held by syz-executor3/18774:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
1 lock held by syz-executor3/19463:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
1 lock held by syz-executor3/21989:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
1 lock held by syz-executor3/22799:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
1 lock held by syz-executor3/24048:
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] sb_start_intwrite include/linux/fs.h:1620 [inline]
 #0:  (sb_internal){.+.+..}, at: [<ffffffff816e2f4d>] ext4_evict_inode+0x3fd/0x1230 fs/ext4/inode.c:240
2 locks held by syz-executor3/25649:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8157535f>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8157535f>] mnt_want_write+0x3f/0xb0 fs/namespace.c:391
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff815030e8>] inode_lock include/linux/fs.h:766 [inline]
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff815030e8>] do_truncate2+0x128/0x1f0 fs/open.c:61
2 locks held by syz-executor3/25650:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8157535f>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8157535f>] mnt_want_write+0x3f/0xb0 fs/namespace.c:391
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff815030e8>] inode_lock include/linux/fs.h:766 [inline]
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff815030e8>] do_truncate2+0x128/0x1f0 fs/open.c:61
2 locks held by syz-executor3/25651:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150105e>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150105e>] vfs_fallocate+0x2fe/0x620 fs/open.c:328
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff8178a046>] inode_lock include/linux/fs.h:766 [inline]
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff8178a046>] ext4_fallocate+0x366/0x1e80 fs/ext4/extents.c:4974
2 locks held by syz-executor3/25652:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150105e>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150105e>] vfs_fallocate+0x2fe/0x620 fs/open.c:328
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff8178a046>] inode_lock include/linux/fs.h:766 [inline]
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff8178a046>] ext4_fallocate+0x366/0x1e80 fs/ext4/extents.c:4974
2 locks held by syz-executor3/25653:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff815754e8>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff815754e8>] mnt_want_write_file+0x68/0x110 fs/namespace.c:449
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff81560a04>] inode_lock include/linux/fs.h:766 [inline]
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff81560a04>] lock_two_nondirectories+0xd4/0xf0 fs/inode.c:981
2 locks held by init/25659:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150ab6b>] file_start_write include/linux/fs.h:2640 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150ab6b>] vfs_write+0x3eb/0x520 fs/read_write.c:556
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff816b29e2>] inode_lock include/linux/fs.h:766 [inline]
 #1:  (&sb->s_type->i_mutex_key#10){++++++}, at: [<ffffffff816b29e2>] ext4_file_write_iter+0x122/0xd70 fs/ext4/file.c:100

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

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.129+ #45
 ffff8801d9907d08 ffffffff81b36939 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff81098180 ffff8801d9907d40
 ffffffff81b41a49 0000000000000001 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81b36939>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b36939>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b41a49>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b419dc>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff81098284>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131bdcd>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131bdcd>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131bdcd>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131bdcd>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff8114272d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82802edc>] 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: 25601 Comm: syz-executor3 Not tainted 4.9.129+ #45
task: ffff8801a21d97c0 task.stack: ffff8801a1428000
RIP: 0010:[<ffffffff8131b20b>] 
c [<ffffffff8131b20b>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8131b20b>] 
c [<ffffffff8131b20b>] __sanitizer_cov_trace_pc+0x3b/0x50 kernel/kcov.c:105
RSP: 0018:ffff8801a142f668  EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffff8801d38cc158 RCX: ffffc9000413b000
RDX: 000000000003ffff RSI: ffffffff81772d4e RDI: ffff8801d38cc108
RBP: ffff8801a142f668 R08: 000000000000000c R09: ffff8801a142f390
R10: ffffed0034285e65 R11: ffff8801a142f32f R12: 0000000000000001
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f14486b9700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000098f308 CR3: 00000001d2a4a000 CR4: 00000000001606b0
DR0: 00000000200001c0 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Stack:
 ffff8801a142f6a0
c ffffffff81772d4e
c ffff8801d38cc100
c 00000000188087a8
c
 ffff8801a142f8f8
c ffff88018a57aa40
c 0000000000008002
c ffff8801a142f760
c
 ffffffff817b96b0
c 0000000000000000
c 1ffff10034285edb
c ffff88018a57a856
c
Call Trace:
 [<ffffffff81772d4e>] ext4_ext_drop_refs+0xae/0xe0 fs/ext4/extents.c:730
 [<ffffffff817b96b0>] mext_check_coverage.constprop.2+0x230/0x400 fs/ext4/move_extent.c:113
 [<ffffffff817bb0eb>] move_extent_per_page fs/ext4/move_extent.c:333 [inline]
 [<ffffffff817bb0eb>] ext4_move_extents+0x17bb/0x2a50 fs/ext4/move_extent.c:681
 [<ffffffff816ed44c>] ext4_ioctl+0x27fc/0x3620 fs/ext4/ioctl.c:594
 [<ffffffff81546b5c>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff81546b5c>] file_ioctl fs/ioctl.c:493 [inline]
 [<ffffffff81546b5c>] do_vfs_ioctl+0x1ac/0x11a0 fs/ioctl.c:677
 [<ffffffff81547bdf>] SYSC_ioctl fs/ioctl.c:694 [inline]
 [<ffffffff81547bdf>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82802d13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 
cac 
ccb 
ccf 
c7e 
c81 
ce2 
c00 
c01 
c1f 
c00 
c48 
c8b 
c75 
c08 
c75 
c2b 
c8b 
c90 
c38 
c12 
c00 
c00 
c83 
cfa 
c02 
c75 
c20 
c48 
c8b 
c88 
c40 
c12 
c00 
c00 
c8b 
c80 
c3c 
c12 
c00 
c00 
c48 
c8b 
c11 
c<48> 
c83 
cc2 
c01 
c48 
c39 
cd0 
c76 
c07 
c48 
c89 
c34 
cd1 
c48 
c89 
c11 
c5d 
cc3 
c0f 
c1f 
c00 
c