INFO: task syz.4.370:7097 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.370       state:D stack:25368 pid:7097  tgid:7095  ppid:6228   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 do_uevent+0x2c3/0x570
 __dlm_new_lockspace+0x17d1/0x1cd0
 device_create_lockspace+0xc7/0x350
 device_write+0x872/0xed0
 vfs_write+0x296/0xba0
 ksys_write+0x150/0x270
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff3f8f9e019
RSP: 002b:00007ff3f9e2e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff3f9225fa0 RCX: 00007ff3f8f9e019
RDX: 0000000000000070 RSI: 0000200000001380 RDI: 0000000000000003
RBP: 00007ff3f903500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff3f9226038 R14: 00007ff3f9225fa0 R15: 00007fffcb64ca38
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8eb59ce0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5436:
 #0: ffff88810ca950a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034762e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
1 lock held by syz.4.370/7097:
 #0: ffffffff9a86ece0 (&ls_lock){+.+.}-{4:4}, at: __dlm_new_lockspace+0xa8/0x1cd0
1 lock held by dlm_recoverd/7102:
 #0: ffff8881708b8a18 (&ls->ls_in_recovery){+.+.}-{4:4}, at: dlm_recoverd+0xbc/0x2a00
1 lock held by syz-executor/9345:
 #0: ffffffff8eb5ffe8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
2 locks held by udevd/10116:
 #0: ffff88823c63b360 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160
 #1: ffff88823c624440 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
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: 5058 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:memset_orig+0x8a/0xb0
Code: 89 d1 83 e1 38 74 14 c1 e9 03 66 0f 1f 44 00 00 ff c9 48 89 07 48 8d 7f 08 75 f5 83 e2 07 74 0a ff ca 88 07 48 8d 7f 01 75 f6 <4c> 89 d0 e9 ce da 02 00 48 83 fa 07 76 e3 48 89 07 49 c7 c0 08 00
RSP: 0018:ffffc90002887428 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000c40 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90002887630
RBP: ffffc90002887660 R08: dffffc0000000000 R09: 0000000000000000
R10: ffffc90002887430 R11: ffff88823c63fc18 R12: ffff888100042140
R13: ffffffff8228db6d R14: ffff888170601000 R15: ffffc90002887430
FS:  00007f6fbb2bdc80(0000) GS:ffff8882a8f4b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555570e94a68 CR3: 0000000171d52000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 kasan_save_track+0x2f/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x375/0x720
 tomoyo_realpath_from_path+0xef/0x640
 tomoyo_check_open_permission+0x229/0x470
 security_file_open+0xa9/0x240
 do_dentry_open+0x4a0/0x1380
 vfs_open+0x3b/0x340
 path_openat+0x1443/0x1d60
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6fbaf169a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffcc47cd570 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055ca73c0a040 RCX: 00007f6fbaf169a4
RDX: 0000000000080141 RSI: 000055ca73bed0d8 RDI: 00000000ffffff9c
RBP: 000055ca73bed0d8 R08: 00000000ffffffff R09: 0000000000000000
R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141
R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff
 </TASK>
