INFO: task kworker/u9:16:10545 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/u9:16   state:D stack:19720 pid:10545 tgid:10545 ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: writeback wb_workfn (flush-7:2)
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7f7/0x1550
 hfsplus_write_inode+0x54a/0x760
 __writeback_single_inode+0x75a/0x10e0
 writeback_sb_inodes+0x979/0x19d0
 __writeback_inodes_wb+0x111/0x240
 wb_writeback+0x459/0xb00
 wb_workfn+0xb12/0xf10
 process_scheduled_works+0xb5d/0x1860
 worker_thread+0xa53/0xfc0
 kthread+0x389/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cce0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/1:1H/681:
2 locks held by getty/5438:
 #0: 
ffff8881732690a0
 (
&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034732e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
4 locks held by kworker/u9:16/10545:
 #0: ffff8881622b7940 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: 
ffffc90006687c40
 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
 #2: ffff8881145f80d8 (&type->s_umount_key#76){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0
 #3: ffff88818b28c0a8 (&tree->tree_lock/2){+.+.}-{4:4}, at: hfsplus_write_inode+0x54a/0x760
9 locks held by syz.2.3068/17539:
1 lock held by syz-executor/18248:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 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/0x300
 sys_info+0x135/0x170
 watchdog+0xfd3/0x1030
 kthread+0x389/0x470
 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: 17539 Comm: syz.2.3068 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:__sanitizer_cov_trace_pc+0x0/0x70
Code: 89 fb e8 23 00 00 00 48 8b 3d 14 1a 61 0c 48 89 de 5b e9 e3 f3 5f 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0d f8 d9 73 11 65 8b 15 19 da 73
RSP: 0018:ffffc900049e6b58 EFLAGS: 00000002
RAX: ffffffff8544d811 RBX: 0000000000000200 RCX: 0000000000000000
RDX: ffff88810eec3b00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900049e6cd0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200093cd58 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffffffff9a7a8840
FS:  00007f240d28c6c0(0000) GS:ffff8882a9287000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555640dda68 CR3: 000000019ba24000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 serial8250_console_write+0x1af/0x1ba0
 console_flush_all+0x718/0xb20
 console_unlock+0xd1/0x1c0
 vprintk_emit+0x485/0x560
 _printk+0xdd/0x130
 hfsplus_bnode_dump+0x189/0xa40
 hfsplus_brec_remove+0x617/0x700
 __hfsplus_delete_attr+0x1e0/0x420
 hfsplus_replace_attr+0x1ff/0x3d0
 __hfsplus_setxattr+0x4bf/0x2860
 hfsplus_setxattr+0x124/0x340
 hfsplus_trusted_setxattr+0x40/0x60
 __vfs_setxattr+0x43c/0x480
 __vfs_setxattr_noperm+0x12d/0x660
 vfs_setxattr+0x163/0x360
 filename_setxattr+0x296/0x630
 path_setxattrat+0x3eb/0x440
 __x64_sys_lsetxattr+0xbf/0xe0
 do_syscall_64+0x15f/0x560
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f240c39ce59
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:00007f240d28c028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f240c615fa0 RCX: 00007f240c39ce59
RDX: 00002000000005c0 RSI: 0000200000000240 RDI: 00002000000001c0
RBP: 00007f240c432d6f R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000361 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f240c616038 R14: 00007f240c615fa0 R15: 00007fff901af728
 </TASK>
