INFO: task syz-executor:6616 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21560 pid:6616  tgid:6616  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb80
 __filemap_get_folio+0x139/0xaf0
 truncate_inode_pages_range+0x3ed/0xda0
 evict+0x517/0x9c0
 evict_inodes+0x64c/0x6d0
 generic_shutdown_super+0x9a/0x2c0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xe9/0x130
 do_syscall_64+0x2bd/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f557c190a77
RSP: 002b:00007ffc058306a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f557c213d7d RCX: 00007f557c190a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc05830760
RBP: 00007ffc05830760 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc058317f0
R13: 00007f557c213d7d R14: 000000000002928e R15: 00007ffc05831830
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8df3d6a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
5 locks held by kworker/1:2/793:
 #0: ffff8881604ad148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90004f47ba0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff88810c1fa198 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4a20
 #3: ffff8881ba86d198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400
 #4: ffff8881b0cb0160 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400
5 locks held by kworker/u10:3/4537:
2 locks held by getty/5639:
 #0: ffff88811312b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
4 locks held by udevd/6168:
 #0: ffff888113c00d58 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe20
 #1: ffff88816e279888 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5c/0x420
 #2: ffff88816e0b10f8 (kn->active#19){++++}-{0:0}, at: kernfs_seq_start+0xb2/0x420
 #3: ffff8881ba86d198 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0
4 locks held by udevd/6169:
 #0: ffff88801ffcf0a0 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe20
 #1: ffff888106b25c88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5c/0x420
 #2: ffff8880200ed008 (kn->active#19){++++}-{0:0}, at: kernfs_seq_start+0xb2/0x420
 #3: ffff888114005198 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0
1 lock held by syz-executor/6616:
 #0: ffff8881694760e0 (&type->s_umount_key#90){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
5 locks held by kworker/0:5/6631:
 #0: ffff8881604ad148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90004627ba0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff88816bebb198 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4a20
 #3: ffff888114005198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400
 #4: ffff8881033d9160 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400
1 lock held by syz.2.430/8645:
 #0: ffff8881694760e0 (&type->s_umount_key#90){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
3 locks held by syz.1.839/11388:

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

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+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf60/0xfa0
 kthread+0x711/0x8a0
 ret_from_fork+0x4bc/0x870
 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: 11388 Comm: syz.1.839 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:lru_add+0x22/0xd80
Code: 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 28 48 89 f3 49 89 fc 49 bd 00 00 00 00 00 fc ff df <e8> 79 ad c3 ff 4c 8d 7b 08 4c 89 f8 48 c1 e8 03 48 89 04 24 42 80
RSP: 0018:ffffc90003c67640 EFLAGS: 00000082
RAX: ffffffff81fc8613 RBX: ffffea0006ac8380 RCX: 0000000000080000
RDX: ffffc9000ac01000 RSI: ffffea0006ac8380 RDI: ffff8881604d08c8
RBP: ffffc90003c67770 R08: ffffea0006ac8347 R09: 1ffffd4000d59068
R10: dffffc0000000000 R11: ffffffff81fc6bb0 R12: ffff8881604d08c8
R13: dffffc0000000000 R14: ffff8881026b0d00 R15: ffffea0006ac8380
FS:  00007fb2b4fb06c0(0000) GS:ffff8882a9f36000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb2aadff000 CR3: 0000000116252000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 folio_batch_move_lru+0x294/0x420
 __folio_batch_add_and_move+0x51c/0xc60
 shmem_alloc_and_add_folio+0xca0/0xf40
 shmem_get_folio_gfp+0x59d/0x1660
 shmem_write_begin+0xf7/0x2b0
 generic_perform_write+0x2c5/0x900
 shmem_file_write_iter+0xf8/0x120
 vfs_write+0x5c9/0xb30
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb2b418e1ff
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007fb2b4fafdf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007fb2b418e1ff
RDX: 0000000001000000 RSI: 00007fb2a9e00000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000051a5
R10: 000020000000a442 R11: 0000000000000293 R12: 0000000000000007
R13: 00007fb2b4fafef0 R14: 00007fb2b4fafeb0 R15: 00007fb2a9e00000
 </TASK>
vkms_vblank_simulate: vblank timer overrun
