INFO: task syz.3.4072:15568 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.4072      state:D stack:24056 pid:15568 tgid:15567 ppid:10436  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x836/0xbc0
 migrate_pages_batch+0x23f7/0x4f50
 migrate_pages+0x1fab/0x2920
 compact_zone+0x34ba/0x4ca0
 sysctl_compaction_handler+0x4e3/0x880
 proc_sys_call_handler+0x4c6/0x830
 iter_file_splice_write+0xa31/0x1240
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x57b/0xcb0
 do_splice_direct+0x195/0x290
 do_sendfile+0x52e/0x7c0
 __se_sys_sendfile64+0xdf/0x1a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd4f979e0d9
RSP: 002b:00007fd4fa625028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd4f9a25fa0 RCX: 00007fd4f979e0d9
RDX: 00002000000000c0 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007fd4f9835024 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000a R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd4f9a26038 R14: 00007fd4f9a25fa0 R15: 00007fffce2dd9b8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8eb59c20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by kworker/u12:0/55:
 #0: ffff88816db0b940 ((wq_completion)nbd1-recv){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90000bf7c40 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
2 locks held by getty/5426:
 #0: ffff888175fd50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034732e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
3 locks held by kworker/u11:3/5610:
 #0: ffff888114601940 ((wq_completion)hci3){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc9000501fc40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffff888103f5cea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1cb/0x3f0
1 lock held by udevd/6062:
 #0: ffff88816da72350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
2 locks held by kworker/u12:1/11617:
 #0: ffff88816db0b940 ((wq_completion)nbd1-recv){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90008b8fc40 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
1 lock held by syz.3.4072/15568:
 #0: ffff8881be010450 (sb_writers#3){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
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/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: 23 Comm: ksoftirqd/1 Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
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:sta_info_get_bss+0x2c1/0x390
Code: 80 3d fe 7d 07 05 00 48 8b 1c 24 74 7f e8 77 ca 8d f6 45 31 f6 e9 ab 00 00 00 e8 6a ca 8d f6 49 83 c6 d0 e8 11 6d 96 00 89 c5 <31> ff 89 c6 e8 96 ce 8d f6 85 ed 74 14 e8 8d a9 72 f6 84 c0 74 16
RSP: 0018:ffffc900001d7848 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff11037c76b88 RCX: ffff8881604b5940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000c
R10: 000000000000000c R11: 0000000000000100 R12: dffffc0000000000
R13: ffff8881be3b4ec0 R14: ffff8881b40ec000 R15: ffff8881be3b4ec0
FS:  0000000000000000(0000) GS:ffff8882a8f5d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe519def2f8 CR3: 00000001ad116000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ieee80211_rx_for_interface+0x1ad/0x770
 ieee80211_rx_list+0x2e80/0x3b00
 ieee80211_rx_napi+0x1ad/0x3d0
 ieee80211_handle_queued_frames+0xe4/0x1d0
 tasklet_action_common+0x2d7/0x490
 handle_softirqs+0x225/0x840
 run_ksoftirqd+0x36/0x60
 smpboot_thread_fn+0x57c/0xa80
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
