INFO: task syz.4.12668:19539 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.4.12668     state:D stack:23920 pid:19539 tgid:19538 ppid:16303  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x836/0xbc0
 migrate_pages_batch+0x2403/0x4e50
 migrate_pages+0x1fab/0x2920
 compact_zone+0x310e/0x4a30
 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: 0033:0x7f0ab779ce59
RSP: 002b:00007f0ab85af028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f0ab7a15fa0 RCX: 00007f0ab779ce59
RDX: 00002000000000c0 RSI: 0000000000000006 RDI: 0000000000000007
RBP: 00007f0ab7832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0ab7a16038 R14: 00007f0ab7a15fa0 R15: 00007ffffb929458
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e959c20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5438:
 #0: ffff88817110f0a0 (&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
1 lock held by udevd/17764:
 #0: ffff88810b346350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
1 lock held by syz.4.12668/19539:
 #0: ffff88816d978450 (sb_writers#3){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: kauditd Tainted: G             L      syzkaller #0 PREEMPT(full) 
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:do_raw_spin_lock+0x12f/0x2f0
Code: 44 24 40 00 00 00 00 48 89 df be 04 00 00 00 49 89 d6 e8 c4 45 91 00 48 8d 7c 24 40 be 04 00 00 00 e8 b5 45 91 00 8b 44 24 40 <b9> 01 00 00 00 f0 0f b1 0b 0f 85 20 01 00 00 43 c6 44 34 04 f8 65
RSP: 0018:ffffc90000007c00 EFLAGS: 00000097
RAX: 0000000000000000 RBX: ffff88810b97e880 RCX: ffffffff81a2b5ab
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000007c40
RBP: ffffc90000007cb0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f88 R12: 1ffff92000000f84
R13: ffff88810b97e888 R14: dffffc0000000000 R15: 1ffff1102172fd11
FS:  0000000000000000(0000) GS:ffff88818dc1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb59a06000 CR3: 000000010a17a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 _raw_spin_lock_irqsave+0x4c/0x60
 lock_task_sighand+0x14a/0x2e0
 posixtimer_send_sigqueue+0x267/0xa00
 posix_timer_fn+0x11d/0x190
 __hrtimer_run_queues+0x3bc/0xa10
 hrtimer_interrupt+0x448/0x910
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_is_watching+0x5a/0xb0
Code: f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 6c bb 88 00 48 c7 c3 d8 88 41 93 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 34 8b 03 65 ff 0d b9 12 95 11 74 11 83 e0 04 c1 e8 02 5b
RSP: 0018:ffffc90000aa7748 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff8881210338d8 RCX: 0000000080000001
RDX: ffffc90000aa7801 RSI: ffffffff8c2abb60 RDI: ffffffff8c2abb20
RBP: 1ffffffff2190b01 R08: ffffc90000aa7858 R09: 0000000000000000
R10: ffffc90000aa78b8 R11: fffff52000154f19 R12: ffffc90000aa0000
R13: ffffffff8176e21f R14: ffffffff8e2a67d0 R15: dffffc0000000000
 unwind_next_frame+0x1b66/0x2550
 __unwind_start+0x514/0x660
 arch_stack_walk+0xe3/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x182/0x650
 kauditd_send_queue+0x295/0x2e0
 kauditd_thread+0x7ef/0xa90
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
