INFO: task syz-executor.4:23469 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc2-syzkaller-00047-g1bbb19b6eb1b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:26640 pid:23469 tgid:23468 ppid:21385  flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf12/0x5c60 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe9/0x280 kernel/sched/core.c:6817
 io_schedule+0xc2/0x140 kernel/sched/core.c:9023
 folio_wait_bit_common+0x3dc/0x9c0 mm/filemap.c:1274
 __folio_lock mm/filemap.c:1612 [inline]
 folio_lock include/linux/pagemap.h:1048 [inline]
 folio_lock include/linux/pagemap.h:1044 [inline]
 __filemap_get_folio+0x637/0xaa0 mm/filemap.c:1865
 truncate_inode_pages_range+0x3a0/0xf00 mm/truncate.c:367
 kill_bdev block/bdev.c:79 [inline]
 blkdev_flush_mapping+0x144/0x310 block/bdev.c:638
 blkdev_put_whole+0xc4/0xf0 block/bdev.c:669
 bdev_release+0x509/0xa80 block/bdev.c:985
 blkdev_release+0x37/0x50 block/fops.c:631
 __fput+0x270/0xb80 fs/file_table.c:376
 task_work_run+0x14f/0x250 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa8a/0x2ad0 kernel/exit.c:871
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1020
 get_signal+0x23b9/0x2790 kernel/signal.c:2893
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x156/0x2b0 kernel/entry/common.c:212
 do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f262387c9a0
RSP: 002b:00007f2624685c00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: 0000000000000006 RBX: 0000000000002000 RCX: 00007f262387c9a0
RDX: 0000000000002000 RSI: 00007f2624685ca0 RDI: 00000000ffffff9c
RBP: 00007f2624685ca0 R08: 0000000000000000 R09: 002364626e2f7665
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007f26239abf80 R15: 00007ffda4fdef18
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/0:0/8:
 #0: ffff8880b943cc98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
 #1: ffff8880b9428a08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:988
1 lock held by khungtaskd/29:
 #0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by getty/4806:
 #0: ffff88802b07d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfca/0x1490 drivers/tty/n_tty.c:2201
3 locks held by kworker/u5:6/5097:
 #0: ffff88808f6f6538 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
 #1: ffffc90003eefd80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
 #2: ffff88802d419060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:305
1 lock held by syz-executor.4/23469:
 #0: ffff8880205c74c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0xcd/0xa80 block/bdev.c:969
3 locks held by syz-executor.2/25595:

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc2-syzkaller-00047-g1bbb19b6eb1b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xf87/0x1210 kernel/hung_task.c:379
 kthread+0x2c6/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25595 Comm: syz-executor.2 Not tainted 6.8.0-rc2-syzkaller-00047-g1bbb19b6eb1b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x49/0x60 kernel/kcov.c:212
Code: f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b 8b 82 d8 15 00 00 83 f8 02 75 20 48 8b 8a e0 15 00 00 8b 92 dc 15 00 00 48 8b 01 <48> 83 c0 01 48 39 d0 73 07 48 89 01 48 89 34 c1 c3 cc cc cc cc 66
RSP: 0018:ffffc9000477eee0 EFLAGS: 00000246
RAX: 000000000003ffff RBX: ffffc9000477ef68 RCX: ffffc90005439000
RDX: 0000000000040000 RSI: ffffffff813c59d8 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000000 R12: ffffffff81cc41c6
R13: 0000000000000000 R14: ffffc9000477f028 R15: ffffc9000477ef9d
FS:  00007f747fd7c6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000035282000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 unwind_next_frame+0x478/0x2390 arch/x86/kernel/unwind_orc.c:494
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
 save_stack+0x164/0x1f0 mm/page_owner.c:129
 __set_page_owner+0x1f/0x60 mm/page_owner.c:195
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311
 __alloc_pages+0x22f/0x2440 mm/page_alloc.c:4567
 alloc_pages_mpol+0x258/0x600 mm/mempolicy.c:2133
 shmem_alloc_folio+0x115/0x150 mm/shmem.c:1628
 shmem_alloc_and_add_folio+0x14f/0x7b0 mm/shmem.c:1668
 shmem_get_folio_gfp+0x627/0x1360 mm/shmem.c:2052
 shmem_fault+0x205/0xa90 mm/shmem.c:2228
 __do_fault+0x10a/0x4a0 mm/memory.c:4376
 do_read_fault mm/memory.c:4738 [inline]
 do_fault mm/memory.c:4868 [inline]
 do_pte_missing mm/memory.c:3745 [inline]
 handle_pte_fault mm/memory.c:5144 [inline]
 __handle_mm_fault+0x32c2/0x4920 mm/memory.c:5285
 handle_mm_fault+0x47a/0xa10 mm/memory.c:5450
 faultin_page mm/gup.c:958 [inline]
 __get_user_pages+0x4b6/0x1490 mm/gup.c:1241
 populate_vma_page_range+0x2d4/0x420 mm/gup.c:1679
 __mm_populate+0x1d7/0x380 mm/gup.c:1788
 mm_populate include/linux/mm.h:3391 [inline]
 vm_mmap_pgoff+0x2d1/0x3c0 mm/util.c:561
 ksys_mmap_pgoff+0x7d/0x5b0 mm/mmap.c:1425
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:93 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:86
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f747f07dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f747fd7c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f747f1abf80 RCX: 00007f747f07dda9
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f747f0ca47a R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f747f1abf80 R15: 00007ffdccf23788
 </TASK>