INFO: task udevd:13744 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:20712 pid:13744 tgid:13744 ppid:1      task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x149b/0x4fd0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb80
 do_read_cache_folio+0x1ad/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x8c/0xf30
 bdev_disk_changed+0x75f/0x14b0
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x457/0x600
 do_dentry_open+0x7ce/0x1420
 vfs_open+0x3b/0x340
 path_openat+0x340e/0x3dd0
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xec/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe766b169a4
RSP: 002b:00007ffc400644c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055ecf09fd710 RCX: 00007fe766b169a4
RDX: 00000000000a0800 RSI: 000055ecf0a10a70 RDI: 00000000ffffff9c
RBP: 000055ecf0a10a70 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055ecf0a11800 R14: 0000000000000001 R15: 000055ecf09fd910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5652:
 #0: ffff888112a660a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x449/0x1460
2 locks held by syz-executor/5753:
2 locks held by kworker/u9:1/31328:
 #0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770
 #1: ffffc9000908fbc0 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770
1 lock held by udevd/13744:
 #0: ffff888106f31358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/14663:
 #0: ffff888106b9b358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/16173:
 #0: ffff8881a2440358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/17287:
 #0: ffff888106b9f358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30

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

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+0xf95/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x510/0xa50
 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: 7264 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:unlink_file_vma_batch_add+0x32/0x1e0
Code: 56 41 55 41 54 53 49 89 f6 48 89 fb 48 bd 00 00 00 00 00 fc ff df e8 7d 37 a9 ff 4d 8d 7e 58 4c 89 f8 48 c1 e8 03 80 3c 28 00 <74> 08 4c 89 ff e8 d4 57 0f 00 4d 8b 27 4d 85 e4 0f 84 8d 00 00 00
RSP: 0018:ffffc9000706f948 EFLAGS: 00000246
RAX: 1ffff110241d5b9b RBX: ffffc9000706fa00 RCX: ffff888118bf0000
RDX: 0000000000000000 RSI: ffff888120eadc80 RDI: ffffc9000706fa00
RBP: dffffc0000000000 R08: ffffffff8f822177 R09: 1ffffffff1f0442e
R10: dffffc0000000000 R11: fffffbfff1f0442f R12: ffff888120eadb00
R13: ffff888120eadc80 R14: ffff888120eadc80 R15: ffff888120eadcd8
FS:  0000000000000000(0000) GS:ffff88818e821000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6a8f717d60 CR3: 000000000dd3a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 free_pgtables+0x745/0x9d0
 exit_mmap+0x431/0xb10
 __mmput+0x118/0x430
 exit_mm+0x169/0x230
 do_exit+0x627/0x22f0
 do_group_exit+0x21c/0x2d0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x2210/0x2210
 do_syscall_64+0xec/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6a8e98f7c9
Code: Unable to access opcode bytes at 0x7f6a8e98f79f.
RSP: 002b:00007ffedb7576a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f6a8e9f46c4 RCX: 00007f6a8e98f7c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043
RBP: 00007f6a8e9f46d6 R08: 00007ffedb755447 R09: 00000000000927c0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00000000000927c0 R14: 00000000000f5d88 R15: 00007ffedb757850
 </TASK>
