INFO: task udevd:18040 blocked 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:21536 pid:18040 tgid:18040 ppid:5257   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: 0033:0x7fa3d43799a4
RSP: 002b:00007ffc757fbf40 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055c5dd79b9c0 RCX: 00007fa3d43799a4
RDX: 00000000000a0800 RSI: 000055c5dd79b210 RDI: 00000000ffffff9c
RBP: 000055c5dd79b210 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055c5dd78d800 R14: 0000000000000001 R15: 000055c5dd779910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e75e620 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by udevd/5257:
 #0: ffff88812103ade0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150
2 locks held by getty/5634:
 #0: ffff8881706000a0 (&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/18040:
 #0: ffff888169f98358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by syz.2.10664/31728:
 #0: ffff888169f98358 (&disk->open_mutex){+.+.}-{4:4}, at: sync_bdevs+0x27e/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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8611 Comm: syz-executor 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:native_apic_msr_eoi+0xf/0x20
Code: 48 89 d6 31 d2 e9 71 35 75 03 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa b9 0b 08 00 00 31 c0 31 d2 0f 30 <e9> 7c 2d 3a 0a cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc90000a08fd0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffc90003617648 RCX: 000000000000080b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffff88823c62404f R09: 1ffff110478c4809
R10: dffffc0000000000 R11: ffffed10478c480a R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557794e500(0000) GS:ffff8882a9462000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555577969a28 CR3: 00000001bacc8000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __sysvec_call_function_single+0x13/0x430
 sysvec_call_function_single+0x9e/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 1a d2 f2 f5 48 89 df e8 52 47 f3 f5 e8 4d 9e 1e f6 fb bf 01 00 00 00 <e8> 32 04 e5 f5 65 8b 05 1b 02 6d 07 85 c0 74 07 5b e9 01 48 00 00
RSP: 0018:ffffc900036176f8 EFLAGS: 00000202
RAX: 0000000000bd9b97 RBX: ffff88811560c458 RCX: 0000000080000002
RDX: 0000000000000006 RSI: ffffffff8defc9db RDI: 0000000000000001
RBP: ffffc90003617b10 R08: ffffffff9011e6b7 R09: 1ffffffff2023cd6
R10: dffffc0000000000 R11: fffffbfff2023cd7 R12: dffffc0000000000
R13: 1ffff11022ac188a R14: ffff88811560c450 R15: ffff88811560c458
 filemap_remove_folio+0xee/0x1f0
 truncate_inode_folio+0x5d/0x70
 shmem_undo_range+0x42f/0x1660
 shmem_evict_inode+0x240/0x9e0
 evict+0x61e/0xb10
 filename_unlinkat+0x43f/0x610
 __se_sys_unlink+0x2e/0x140
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fddb139b907
Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe850f8ee8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fddb139b907
RDX: 00007ffe850f8f10 RSI: 00007ffe850f8fa0 RDI: 00007ffe850f8fa0
RBP: 00007ffe850f8fa0 R08: 00007ffe850f9fa0 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffe850fa030
R13: 00007fddb1432048 R14: 00000000000c23e8 R15: 00007ffe850fa070
 </TASK>
