INFO: task udevd:32607 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:26408 pid:32607 tgid:32607 ppid:5045   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17db/0x58f0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x836/0xbc0
 do_read_cache_folio+0x1ac/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x9a/0x7a0
 bdev_disk_changed+0x851/0x17a0
 blkdev_get_whole+0x372/0x510
 bdev_open+0x324/0xd70
 blkdev_open+0x461/0x600
 do_dentry_open+0x816/0x1380
 vfs_open+0x3b/0x340
 path_openat+0x1443/0x1d60
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7213d169a4
RSP: 002b:00007ffe4f83f300 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000559b1a5f3220 RCX: 00007f7213d169a4
RDX: 00000000000a0800 RSI: 0000559b1a5f0b20 RDI: 00000000ffffff9c
RBP: 0000559b1a5f0b20 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000559b1a5e9950 R14: 0000000000000001 R15: 0000559b1a5d2910
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/35: 1, last CPU#0:
 #0: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by getty/5423: 2, on CPU#1:
 #0: ffff88810fe320a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034832e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
locks held by kworker/u9:1/30115: 4, last CPU#0:
 #0: ffff8881000aa940 ((wq_completion)kvfree_rcu_reclaim){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90006b37c40 ((work_completion)(&(&krcp->monitor_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffffffff8ed5c9c0 (rcu_callback){....}-{0:0}, at: kvfree_rcu_bulk+0x6d/0x190
 #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550
locks held by udevd/32607: 1, on CPU#0:
 #0: ffff88810a1d3350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by syz.0.16128/11843: 1, on CPU#0:
 #0: ffff8881bc109bc0 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x1dd/0x4e0
locks held by syz.0.16128/11844: 2, last CPU#1:
 #0: ffff8881bc109bc0 (&mm->mmap_lock){++++}-{4:4}, at: __mm_populate+0x182/0x390
 #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240

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

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+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17d/0x390
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x38b/0x480
 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: 11844 Comm: syz.0.16128 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:rcu_lockdep_current_cpu_online+0x89/0x120
Code: 3c 30 00 74 08 48 89 df e8 f4 2f 8b 00 48 8b 03 48 8d 98 40 2b 96 93 48 8d b8 68 2b 96 93 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <74> 05 e8 d0 2f 8b 00 4c 8b 7b 28 48 83 c3 20 48 89 d8 48 c1 e8 03
RSP: 0018:ffffc9000faef4b8 EFLAGS: 00000246
RAX: 1ffff110478c796d RBX: ffff88823c63cb40 RCX: 8000000000000002
RDX: 0000000000000002 RSI: ffffffff8c6dad60 RDI: ffff88823c63cb68
RBP: 0000000000000000 R08: ffffea0006be1d47 R09: 1ffffd4000d7c3a8
R10: dffffc0000000000 R11: fffff94000d7c3a9 R12: ffff888172fa0380
R13: 1ffff92001f5dedc R14: dffffc0000000000 R15: ffff8881b5564000
FS:  00007f50e57bc6c0(0000) GS:ffff8882a8cda000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555566833a28 CR3: 00000001adfb0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 rcu_read_lock_held+0x1e/0x50
 xas_reload+0x19f/0x470
 next_uptodate_folio+0x1ed/0x6e0
 filemap_map_pages+0x174a/0x2170
 do_pte_missing+0x20ae/0x34b0
 handle_mm_fault+0x1a53/0x3750
 __get_user_pages+0x1675/0x2750
 populate_vma_page_range+0x2be/0x3c0
 __mm_populate+0x25f/0x390
 vm_mmap_pgoff+0x353/0x4e0
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f50e499e199
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f50e57bc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f50e4c25fa0 RCX: 00007f50e499e199
RDX: b635773f07ebbeef RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f50e4a350b8 R08: ffffffffffffffff R09: 00000000215eb000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f50e4c26038 R14: 00007f50e4c25fa0 R15: 00007ffe873dfdf8
 </TASK>
