INFO: task udevd:5604 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:udevd           state:D stack:24744 pid:5604  tgid:5604  ppid:5041   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17d4/0x5820
 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: 0033:0x7f336b5669a4
RSP: 002b:00007fff9ed67d30 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005601da951500 RCX: 00007f336b5669a4
RDX: 00000000000a0800 RSI: 00005601da9524c0 RDI: 00000000ffffff9c
RBP: 00005601da9524c0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 00005601da95a960 R14: 0000000000000001 R15: 00005601da951910
 </TASK>

Showing all locks held in the system:
locks held by kworker/u8:0/12: 3, on CPU#0:
 #0: ffff8881012d5940 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90000117c40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffffffff8ed62938 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x530
locks held by kworker/u8:1/13: 5, last CPU#1:
 #0: ffff8881bab79940 ((wq_completion)krds_cp_wq#6/4){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90000127c40 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff88816bdfad80 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x1cc/0x920
 #3: ffff888187786e60 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: __inet6_bind+0x301/0xf30
 #4: ffffffff8ed5c6a0 (rcu_read_lock){....}-{1:3}, at: __inet6_bind+0x49b/0xf30
locks held by pr/ttyS0/16: 2, last CPU#1:
 #0: ffffffff8ec36278 (console_srcu){....}-{0:0}, at: console_srcu_read_lock+0x30/0x60
 #1: ffffffff9ad250d8 (&port_lock_key){-...}-{3:3}, at: univ8250_console_device_lock+0x67/0xc0
locks held by khungtaskd/34: 1, last CPU#0:
 #0: ffffffff8ed5c6a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by syslogd/5023: 1, last CPU#1:
 #0: ffff8881162c4170 (&u->iolock){+.+.}-{4:4}, at: __unix_dgram_recvmsg+0x1e3/0xd70
locks held by udevd/5604: 1, on CPU#1:
 #0: ffff88816c7a5350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by getty/7106: 2, on CPU#1:
 #0: ffff88816049d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc90005b5c2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
locks held by kworker/u10:34/8494: 3, last CPU#1:
 #0: ffff8881000ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000425fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff88810d8b4258 (&devlink->lock_key#4){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xb40
locks held by kworker/u10:63/8556: 3, last CPU#1:
 #0: ffff8881000ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000360fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff88801b98b258 (&devlink->lock_key#7){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xb40
locks held by kworker/1:0/18872: 2, last CPU#1:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90003befc40 ((debug_obj_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
locks held by syz.6.5832/19906: 1, on CPU#1:
 #0: ffff88816c7a5350 (&disk->open_mutex){+.+.}-{4:4}, at: sync_bdevs+0x276/0x470

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 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+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: 16 Comm: pr/ttyS0 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:sched_core_idle_cpu+0xe8/0x1f0
Code: 42 0f b6 0c 29 84 c9 75 68 83 3b 00 75 1c 48 83 c3 0c 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 75 67 31 c0 83 3b 00 0f 94 c0 <48> 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 c7
RSP: 0018:ffffc90000a18f90 EFLAGS: 00000087
RAX: 0000000000000000 RBX: ffff88823c63bac0 RCX: 0000000000000001
RDX: 0000000001000000 RSI: ffffffff8c6d6d60 RDI: ffff88823c63bad8
RBP: 0000000000000001 R08: 0000000001000001 R09: 1ffffffff20f418f
R10: dffffc0000000000 R11: fffffbfff20f4190 R12: ffffffff8e7437d8
R13: dffffc0000000000 R14: ffff88823c63bae0 R15: ffff888102ed8000
FS:  0000000000000000(0000) GS:ffff8882a8ce6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5830a07580 CR3: 0000000112c46000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __irq_exit_rcu+0xdc/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 7d 39 bf f5 f7 c3 00 02 00 00 74 05 e8 b0 70 eb f5 9c 58 a9 00 02 00 00 75 29 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 64 57 b0 f5 65 48 8b 05 2c 1e af 07 48 85 c0 74 18 5b 41 5e c3
RSP: 0018:ffffc90000157ca8 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000206 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8e472e42 RDI: 0000000000000001
RBP: ffffc90000157e18 R08: ffffffff907a0c7f R09: 1ffffffff20f418f
R10: dffffc0000000000 R11: fffffbfff20f4190 R12: 0000000000000002
R13: ffff888102ed8000 R14: ffffffff9ad250c0 R15: dffffc0000000000
 nbcon_kthread_func+0x6c4/0x880
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
