INFO: task udevd:26443 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:26376 pid:26443 tgid:26443 ppid:5042   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17d4/0x5630
 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: 0033:0x7f90531709a4
RSP: 002b:00007fff57d05170 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000557cd9322780 RCX: 00007f90531709a4
RDX: 00000000000a0800 RSI: 0000557cd930e500 RDI: 00000000ffffff9c
RBP: 0000557cd930e500 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000557cd9316800 R14: 0000000000000001 R15: 0000557cd9302910
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/34: 1, last CPU#1:
 #0: ffffffff8eb5a120 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by getty/5422: 2, on CPU#1:
 #0: ffff8881140b20a0 (&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
locks held by udevd/26443: 1, on CPU#1:
 #0: ffff88810ae4f350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by kworker/1:8/7530: 4, last CPU#1:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa1a/0x14c0
 #1: ffffc9000a9c7c40 (drain_vmap_work){+.+.}-{0:0}, at: process_scheduled_works+0xa1a/0x14c0
 #2: ffffffff8ec80c20 (vmap_purge_lock){+.+.}-{4:4}, at: drain_vmap_area_work+0x17/0x40
 #3: ffff88823c63b2e0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160
locks held by syz.2.11002/9078: 1, last CPU#1:
 #0: ffff8881a05e8ee0 (sk_lock-AF_SMC){+.+.}-{0:0}, at: smc_setsockopt+0x449/0xb00
locks held by syz.1.11025/9156: 2, on CPU#0:
 #0: ffffffff9002d9c0 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
 #1: ffffffff8eb60428 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 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: 5579 Comm: syz-executor 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:native_apic_msr_write+0x39/0x50
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 e9 90 ed 60 0a cc 89 f6 31 d2 e9 36 a9 9c 03 66 0f 1f 44 00
RSP: 0018:ffffc90000007d30 EFLAGS: 00000046
RAX: 0000000000015909 RBX: ffff888121023c80 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 0000000000015909 RDI: 0000000000000838
RBP: ffffc90000007df0 R08: 0000000000000100 R09: 0000000000080000
R10: 0000000000000000 R11: ffffffff8174c510 R12: 0000000000015909
R13: dffffc0000000000 R14: 000000000ffff0e6 R15: 0000000000000020
FS:  000055557ef50540(0000) GS:ffff88818d93c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32715ff8 CR3: 0000000170212000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 lapic_next_event+0x11/0x20
 clockevents_program_event+0x385/0x630
 __hrtimer_rearm_deferred+0x36c/0x4b0
 irqentry_exit+0x8d3/0x910
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 bd ad cc f5 f7 c3 00 02 00 00 74 05 e8 c0 bb f8 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> a4 cf bd f5 65 48 8b 05 4c b0 97 07 48 85 c0 74 18 5b 41 5e e9
RSP: 0018:ffffc90000007f40 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000283 RCX: 8000000000000102
RDX: 0000000000000002 RSI: ffffffff8e235c57 RDI: 0000000000000001
RBP: 0000000000000002 R08: ffffffff9057f337 R09: 1ffffffff20afe66
R10: dffffc0000000000 R11: fffffbfff20afe67 R12: 0000000000000009
R13: 0000000000000008 R14: ffff888121028180 R15: 0000000000000100
 handle_softirqs+0x226/0x860
 do_softirq+0x77/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x140
 tcp_recvmsg+0x1df/0x7f0
 sock_recvmsg+0x166/0x1e0
 sock_read_iter+0x22a/0x2f0
 vfs_read+0x595/0xa80
 ksys_read+0x150/0x270
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa6a4b59257
Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc8c128a00 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055557ef50540 RCX: 00007fa6a4b59257
RDX: 0000000000000004 RSI: 00007ffc8c128a5c RDI: 0000000000000003
RBP: 00007ffc8c128f00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
R13: 00007ffc8c128a5c R14: 00007ffc8c128af0 R15: 0000000000000000
 </TASK>
