INFO: task udevd:10160 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:25992 pid:10160 tgid:10160 ppid:5042   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: 0033:0x7f1b82d169a4
RSP: 002b:00007ffce147d600 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055e963def780 RCX: 00007f1b82d169a4
RDX: 00000000000a0800 RSI: 000055e963dd02c0 RDI: 00000000ffffff9c
RBP: 000055e963dd02c0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055e963de6950 R14: 0000000000000001 R15: 000055e963dcf910
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/36: 1, last CPU#1:
 #0: ffffffff8fd5c8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by kworker/0:2/807: 4, on CPU#0:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90004b57c40 ((work_completion)(&helper->damage_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff88810475d270 (&helper->lock){+.+.}-{4:4}, at: drm_fb_helper_damage_work+0x15b/0xf20
 #3: ffff888169a18128 (&dev->master_mutex){+.+.}-{4:4}, at: drm_master_internal_acquire+0x20/0x80
locks held by getty/5419: 2, on CPU#1:
 #0: ffff888118f770a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034932e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
locks held by kworker/u8:5/6422: 4, last CPU#1:
 #0: ffff8881b686e940 ((wq_completion)krds_cp_wq#4/0){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000fc47c40 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff8881ac70d280 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x1cc/0x920
 #3: ffff8881a4c29c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: tcp_sock_set_nodelay+0x2a/0x180
locks held by udevd/10160: 1, on CPU#0:
 #0: ffff88810afe5350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by kworker/1:12/22047: 3, on CPU#1:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000273fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff88810e496250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1fd/0x3b0
locks held by syz.2.4776/25703: 1, last CPU#0:
 #0: ffff888114950340 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x1a4/0x9f0

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 36 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 25703 Comm: syz.2.4776 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:__sanitizer_cov_trace_pc+0x49/0x80
Code: 29 89 d6 81 e6 00 01 00 0f 81 fe 00 01 00 00 40 0f 95 c6 81 fa 00 00 00 10 0f 93 c2 40 08 f2 75 35 83 b9 44 17 00 00 00 74 2c <8b> 91 18 17 00 00 83 fa 02 75 21 48 8b 91 20 17 00 00 48 8b 32 48
RSP: 0018:ffffc90027ac70b8 EFLAGS: 00000046
RAX: ffffffff81b7f129 RBX: ffff888120e23c80 RCX: ffff8881be470000
RDX: 8000000000000003 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90027ac7170 R08: ffff8881be470000 R09: 0000000000000002
R10: 0000000000000003 R11: 0000000000000000 R12: 1ffff92004f58e1c
R13: dffffc0000000000 R14: 0000000000000000 R15: 00000072a6ccfbf6
FS:  00007fd688b0d6c0(0000) GS:ffff88818c4c1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd688b0cff8 CR3: 00000001ba78a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 clockevents_program_event+0x279/0x630
 __hrtimer_rearm_deferred+0x36c/0x4b0
 irqentry_exit+0x8d3/0x910
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_is_watching+0x3b/0xb0
Code: e8 ba a7 3b 0a 89 c3 83 f8 08 73 66 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 b7 73 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 1b 44 8c 00 48 c7 c3 18 2a 97 94 49 03 1e 48 89
RSP: 0018:ffffc90027ac72c8 EFLAGS: 00000246
RAX: 1ffffffff1ce76fa RBX: 0000000000000000 RCX: 8000000000000002
RDX: 0000000000000000 RSI: ffffffff8c6dd760 RDI: ffffffff8c6dd720
RBP: ffff88810157df40 R08: ffff88810157df8f R09: 1ffff110202afbf1
R10: dffffc0000000000 R11: ffffed10202afbf2 R12: 0000000000000002
R13: ffffffff8244a0a4 R14: ffffffff8e73b7d0 R15: dffffc0000000000
 lock_release+0x4b/0x3c0
 page_table_check_clear+0x49d/0x500
 __zap_vma_range+0x3a12/0x4f80
 unmap_vmas+0x390/0x550
 exit_mmap+0x293/0x9f0
 __mmput+0x118/0x420
 exit_mm+0x18e/0x240
 do_exit+0x6cd/0x2360
 do_group_exit+0x22d/0x2f0
 get_signal+0x121b/0x12c0
 arch_do_signal_or_restart+0xbb/0x860
 exit_to_user_mode_loop+0x10e/0x770
 do_syscall_64+0x328/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd687b9e559
Code: Unable to access opcode bytes at 0x7fd687b9e52f.
RSP: 002b:00007fd688b0d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd687e25fa8 RCX: 00007fd687b9e559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd687e25fa8
RBP: 00007fd687e25fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd687e26038 R14: 00007ffc6d00c7b0 R15: 00007ffc6d00c898
 </TASK>
