INFO: task kworker/u10:2:47 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u10:2   state:D
 stack:23272 pid:47    tgid:47    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: writeback wb_workfn
 (flush-7:2)

Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7bf/0x1550
 hfsplus_write_inode+0x505/0x700
 __writeback_single_inode+0x6ac/0xf90
 writeback_sb_inodes+0x9de/0x1b00
 __writeback_inodes_wb+0x114/0x240
 wb_writeback+0x42f/0xad0
 wb_workfn+0xc92/0x10f0
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
 #0: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
1 lock held by khungtaskd/35:
 #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
4 locks held by kworker/u10:2/47:
 #0: ffff8881626d7140 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90000b77c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffff8880129e40d8 (&type->s_umount_key#82){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0
 #3: ffff8880244060a8 (&tree->tree_lock){+.+.}-{4:4}, at: hfsplus_write_inode+0x505/0x700
2 locks held by getty/5462:
 #0: ffff88816f8150a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034862e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
8 locks held by syz.2.953/8062:
1 lock held by syz-executor/10773:
 #0: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
3 locks held by syz.1.2049/11017:
 #0: ffff8881bca2f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffff8881bca2f128 (&tty->atomic_write_lock){+.+.}-{4:4}, at: file_tty_write+0x1e4/0x9c0
 #2: ffff8881bca2f2c8 (&tty->termios_rwsem){++++}-{4:4}, at: n_tty_write+0x1f5/0x11e0
2 locks held by syz-executor/11050:
 #0: ffffffff90030bc0 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8a3/0x1bd0
 #1: ffff8881bf6ace70 (&dev_instance_lock_key#23){+.+.}-{4:4}, at: do_setlink+0x3d4/0x4670

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x380
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8062 Comm: syz.2.953 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rtc_cmos_read+0x12/0x20
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 89 fb e8 44 b3 5a 00 89 d8 e6 70 e4 71 <5b> e9 98 bb 67 0a cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000a08c88 EFLAGS: 00000006
RAX: 0000000000000026 RBX: 000000000000000a RCX: ffff888101fc8000
RDX: 0000000000010000 RSI: 0000000000000032 RDI: 000000000000000a
RBP: 000000000000000a R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: ffffffff87f2e0e0 R12: 0000000000000046
R13: 0000000000000019 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f2eff22d6c0(0000) GS:ffff8882a8f49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa153f535c0 CR3: 000000011434a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 mc146818_avoid_UIP+0xdc/0x1c0
 mc146818_get_time+0x9d/0x4c0
 hpet_rtc_interrupt+0x212/0x500
 __handle_irq_event_percpu+0x216/0x9a0
 handle_irq_event+0x8b/0x1e0
 handle_edge_irq+0x1f4/0x8a0
 __common_interrupt+0x141/0x1f0
 common_interrupt+0xb6/0xe0
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40
RIP: 0010:vprintk_emit+0x45d/0x560
Code: 0f 84 44 ff ff ff e8 42 67 21 00 fb eb 44 e8 3a 67 21 00 e8 15 71 2b 0a 4d 85 f6 74 94 e8 2b 67 21 00 fb 48 c7 c7 a0 bf b4 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 4b 18
RSP: 0018:ffffc9000741f340 EFLAGS: 00000246
RAX: ffffffff81a58415 RBX: ffffffff81a5828f RCX: 0000000000080000
RDX: ffffc9000841a000 RSI: 000000000007ffff RDI: ffffffff8eb4bfa0
RBP: ffffc9000741f3f0 R08: ffffffff9057c337 R09: 1ffffffff20af866
R10: dffffc0000000000 R11: fffffbfff20af867 R12: 0000000000000000
R13: 0000000000000065 R14: 0000000000000200 R15: 1ffff92000e83e6c
 _printk+0xdd/0x130
 hfsplus_bnode_dump+0x189/0xa40
 hfsplus_brec_remove+0x5ea/0x6d0
 __hfsplus_delete_attr+0x1de/0x420
 hfsplus_delete_all_attrs+0x1c3/0x350
 hfsplus_delete_cat+0x8f2/0xdc0
 hfsplus_unlink+0x358/0x8e0
 hfsplus_rename+0xd5/0x280
 vfs_rename+0xbd9/0xef0
 filename_renameat2+0x533/0x9a0
 __se_sys_rename+0x55/0x2c0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2efe39e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2eff22d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f2efe625fa0 RCX: 00007f2efe39e0d9
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000200000000000
RBP: 00007f2efe435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2efe626038 R14: 00007f2efe625fa0 R15: 00007ffd8336da98
 </TASK>
