ntfs: (device loop3): ntfs_fill_super(): Unable to determine device size.
gfs2: not a GFS2 filesystem
overlayfs: unrecognized mount option "lowerdi�=./file1" or missing value
overlayfs: unrecognized mount option "lowerdi�=./file1" or missing value
ntfs: (device loop3): ntfs_fill_super(): Unable to determine device size.
INFO: task syz-executor0:29000 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc8+ #67
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor0   D24808 29000   1573 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
 schedule+0xfe/0x460 kernel/sched/core.c:3517
 __rwsem_down_write_failed_common+0xbb9/0x1670 kernel/locking/rwsem-xadd.c:566
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:595
 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write_nested+0xa9/0x130 kernel/locking/rwsem.c:194
 inode_lock_nested include/linux/fs.h:773 [inline]
 lock_rename+0x236/0x290 fs/namei.c:2862
 do_renameat2+0x696/0x1180 fs/namei.c:4577
 __do_sys_rename fs/namei.c:4673 [inline]
 __se_sys_rename fs/namei.c:4671 [inline]
 __x64_sys_rename+0x5e/0x80 fs/namei.c:4671
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: 83 c4 18 c3 e8 d8 64 00 00 48 8b 04 24 48 8b 4c 24 08 48 89 01 e8 d7 2d fc ff e8 22 7a fc ff b8 02 00 00 00 48 8d 0d 2a 60 09 <01> 87 01 8b 05 22 60 09 01 83 f8 01 0f 85 8a 00 00 00 b8 01 00 00
RSP: 002b:00007f37bdcf2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000040
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f37bdcf36d4
R13: 00000000004c3281 R14: 00000000004d4e78 R15: 00000000ffffffff

Showing all locks held in the system:
1 lock held by khungtaskd/982:
 #0: 00000000a51a5f25 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4435
1 lock held by rsyslogd/5272:
 #0: 00000000af058a66 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766
2 locks held by getty/5362:
 #0: 0000000084515f82 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 0000000041cde6c6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
2 locks held by getty/5363:
 #0: 00000000e69b74c7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 000000000cf5bb23 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
2 locks held by getty/5364:
 #0: 00000000ca79785c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 0000000018bff401 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
2 locks held by getty/5365:
 #0: 000000007252b679 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 0000000016b50d69 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
2 locks held by getty/5366:
 #0: 00000000bbb9e413 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 0000000073cbc657 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
2 locks held by getty/5367:
 #0: 00000000da6208ad (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 00000000ace7a5ec (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
2 locks held by getty/5368:
 #0: 000000009164fc65 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
 #1: 00000000ac8568ba (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140
2 locks held by syz-executor0/28933:
 #0: 000000002d5b5a6b (sb_writers#15){.+.+}, at: sb_start_write include/linux/fs.h:1566 [inline]
 #0: 000000002d5b5a6b (sb_writers#15){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360
 #1: 0000000069908930 (&sb->s_type->i_mutex_key#19/1){+.+.}, at: inode_lock_nested include/linux/fs.h:773 [inline]
 #1: 0000000069908930 (&sb->s_type->i_mutex_key#19/1){+.+.}, at: lock_rename+0x236/0x290 fs/namei.c:2862
2 locks held by syz-executor0/29000:
 #0: 000000002d5b5a6b (sb_writers#15){.+.+}, at: sb_start_write include/linux/fs.h:1566 [inline]
 #0: 000000002d5b5a6b (sb_writers#15){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360
 #1: 0000000069908930 (&sb->s_type->i_mutex_key#19/1){+.+.}, at: inode_lock_nested include/linux/fs.h:773 [inline]
 #1: 0000000069908930 (&sb->s_type->i_mutex_key#19/1){+.+.}, at: lock_rename+0x236/0x290 fs/namei.c:2862

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

NMI backtrace for cpu 0
CPU: 0 PID: 982 Comm: khungtaskd Not tainted 4.19.0-rc8+ #67
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
 watchdog+0xb3e/0x1050 kernel/hung_task.c:265
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.0-rc8+ #67
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:reschedule_interrupt+0x0/0x20 arch/x86/entry/entry_64.S:887
Code: 66 2e 0f 1f 84 00 00 00 00 00 68 03 ff ff ff e8 36 f2 ff ff e8 31 2d 00 00 e9 2b f3 ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 <68> 02 ff ff ff e8 16 f2 ff ff e8 c1 26 00 00 e9 0b f3 ff ff 66 90
RSP: 0018:ffff8801d9b1fc08 EFLAGS: 00000082
RAX: dffffc0000000000 RBX: 1ffff1003b363f8a RCX: 0000000000000000
RDX: 1ffffffff1263e44 RSI: 0000000000000001 RDI: ffffffff8931f220
RBP: ffff8801d9b1fc30 R08: ffff8801d9b103c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d9b1fcf0
R13: ffffffff89f3bd60 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000001bc3f9000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
 default_idle+0xbf/0x490 arch/x86/kernel/process.c:498
 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:489
 default_idle_call+0x6d/0x90 kernel/sched/idle.c:93
 cpuidle_idle_call kernel/sched/idle.c:153 [inline]
 do_idle+0x3db/0x5b0 kernel/sched/idle.c:262
 cpu_startup_entry+0x10c/0x120 kernel/sched/idle.c:368
 start_secondary+0x447/0x5f0 arch/x86/kernel/smpboot.c:271
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243