INFO: task udevd:5815 blocked 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:22200 pid:5815  tgid:5815  ppid:5254   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x6d8/0xbc0
 do_read_cache_folio+0x1ad/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x92/0xef0
 bdev_disk_changed+0x7ba/0x1550
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x470/0x610
 do_dentry_open+0x785/0x14e0
 vfs_open+0x3b/0x340
 path_openat+0x2e08/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f77c57169a4
RSP: 002b:00007ffe419588b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055fe9dafe220 RCX: 00007f77c57169a4
RDX: 00000000000a0800 RSI: 000055fe9dae6ad0 RDI: 00000000ffffff9c
RBP: 000055fe9dae6ad0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055fe9daeeaa0 R14: 0000000000000001 R15: 000055fe9dadd910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e75e5a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5631:
 #0: ffff8881715d70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
1 lock held by udevd/5815:
 #0: ffff88810a6f8358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
2 locks held by syz.3.8864/17134:
 #0: ffff88801b2a8808 (&sb->s_type->i_mutex_key#14){+.+.}-{4:4}, at: sock_close+0x9b/0x240
 #1: ffffffff8e7648b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
4 locks held by syz.1.8865/17142:

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

NMI backtrace for cpu 1
CPU: 1 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+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 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: 17138 Comm: syz.3.8864 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:proc_invalidate_siblings_dcache+0xf0/0x6c0
Code: 80 36 ff 48 b8 00 00 00 00 00 fc ff df 4c 89 f9 48 c1 e9 03 48 89 4c 24 18 80 3c 01 00 74 08 4c 89 ff e8 93 b1 c4 ff 4d 8b 2f <4d> 85 ed 0f 84 f7 04 00 00 4c 89 7c 24 08 45 31 f6 48 8b 7c 24 10
RSP: 0018:ffffc900047178e8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff110302ac7d1
RDX: 0000000000000000 RSI: ffffffff8c27d560 RDI: ffffffff8c27d520
RBP: ffffc90004717af0 R08: ffffffff826b5feb R09: ffffffff8e75e5a0
R10: dffffc0000000000 R11: fffffbfff2023c97 R12: dffffc0000000000
R13: 0000000000000000 R14: 1ffff11021929463 R15: ffff888181563e88
FS:  00007f62a24b46c0(0000) GS:ffff88818de51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000005a2000 CR3: 000000017878e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 release_task+0x1204/0x16f0
 do_exit+0x1674/0x23c0
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 exit_to_user_mode_loop+0x86/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f62a159c819
Code: Unable to access opcode bytes at 0x7f62a159c7ef.
RSP: 002b:00007f62a24b40e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f62a1816098 RCX: 00007f62a159c819
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f62a1816098
RBP: 00007f62a1816090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f62a1816128 R14: 00007fff4cc00890 R15: 00007fff4cc00978
 </TASK>
