INFO: task syz-executor:8001 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:21768 pid:8001  tgid:8001  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: 0033:0x7f9a1c990a77
RSP: 002b:00007fffdb3bc058 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f9a1ca13d7d RCX: 00007f9a1c990a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffdb3bc110
RBP: 00007fffdb3bc110 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffdb3bd1a0
R13: 00007f9a1ca13d7d R14: 00000000000260e4 R15: 00007fffdb3bd1e0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/36:
 #0: ffffffff8df3d6a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u11:1/5201:
 #0: ffff8881ac8dd948 ((wq_completion)hci4){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90005fefba0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff8881bb8b0dc8 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d4/0x3a0
2 locks held by getty/5638:
 #0: ffff888113fbe0a0 (&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
1 lock held by syz-executor/8001:
 #0: ffff888174c700e0 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
1 lock held by syz.5.976/10849:
 #0: ffff888174c700e0 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
3 locks held by syz.1.1107/11537:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 36 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: 11537 Comm: syz.1.1107 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:lock_release+0xb0/0x3e0
Code: 00 00 00 0f 85 1e 02 00 00 49 81 3e 40 53 32 93 0f 84 11 02 00 00 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 48 8b 5c 24 20 fa <48> c7 c7 2f 31 72 8d e8 64 26 aa 09 65 ff 05 6d 6a d1 10 c7 44 24
RSP: 0018:ffffc90000a08cd8 EFLAGS: 00000083
RAX: 0000000000000000 RBX: 0000000000000083 RCX: 03eeee89b666ce00
RDX: 0000000000000000 RSI: ffffffff8bbf0fc0 RDI: ffffffff8bbf0f80
RBP: 0000000000000000 R08: ffffffff8de03597 R09: 1ffffffff1bc06b2
R10: dffffc0000000000 R11: fffffbfff1bc06b3 R12: 0000004978e5ba1b
R13: ffffffff81903743 R14: ffff88823c624048 R15: ffff8881b9443a00
FS:  00007f0cd7dd26c0(0000) GS:ffff8882a9f36000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005565a660b7b8 CR3: 0000000174d54000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 psi_task_change+0x176/0x340
 enqueue_task+0x343/0x420
 ttwu_do_activate+0x1f3/0x870
 sched_ttwu_pending+0x2ce/0x6e0
 __flush_smp_call_function_queue+0x86d/0xaa0
 __sysvec_call_function_single+0xa8/0x3d0
 sysvec_call_function_single+0x9e/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:shmem_add_to_page_cache+0x10b/0xba0
Code: e8 ea d8 23 00 4c 89 f8 48 c1 e8 03 48 89 44 24 18 42 80 3c 28 00 74 08 4c 89 ff e8 5f d6 23 00 49 8b 1f 48 89 de 48 83 e6 40 <31> ff e8 ae da bd ff 48 83 e3 40 4c 89 7c 24 38 75 09 e8 be d5 bd
RSP: 0018:ffffc90003cce700 EFLAGS: 00000246
RAX: 1ffffd4000de1488 RBX: 057ff00000020001 RCX: ffffffff82024356
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0006f0a440
RBP: ffffc90003cce830 R08: ffffea0006f0a447 R09: 1ffffd4000de1488
R10: dffffc0000000000 R11: fffff94000de1489 R12: 1ffff92000799cec
R13: dffffc0000000000 R14: 00000000000045cb R15: ffffea0006f0a440
 shmem_alloc_and_add_folio+0x829/0xf40
 shmem_get_folio_gfp+0x59d/0x1660
 shmem_write_begin+0xf7/0x2b0
 generic_perform_write+0x2c5/0x900
 shmem_file_write_iter+0xf8/0x120
 __kernel_write_iter+0x428/0x910
 dump_user_range+0x8a0/0xc90
 elf_core_dump+0x3369/0x3960
 coredump_write+0x116c/0x1900
 vfs_coredump+0x1db5/0x2a60
 get_signal+0x1108/0x1340
 arch_do_signal_or_restart+0xa0/0x790
 irqentry_exit_to_user_mode+0x7e/0x110
 exc_page_fault+0xab/0x100
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7f0cd6f8f751
Code: 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:fffffffffffffe70 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f0cd71e6090 RCX: 00007f0cd6f8f749
RDX: 0000000000000000 RSI: fffffffffffffe70 RDI: 0000000000008000
RBP: 00007f0cd7013f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f0cd71e6128 R14: 00007f0cd71e6090 R15: 00007ffd5b5e04e8
 </TASK>
