INFO: task udevd:19084 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:21712 pid:19084 tgid:19084 ppid:5049   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 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+0x9a/0x7a0
 bdev_disk_changed+0x817/0x1770
 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+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7eff4b3169a4
RSP: 002b:00007ffcb0208800 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000564d87294910 RCX: 00007eff4b3169a4
RDX: 00000000000a0800 RSI: 0000564d87277360 RDI: 00000000ffffff9c
RBP: 0000564d87277360 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000564d87288860 R14: 0000000000000001 R15: 0000564d87276910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/33:
 #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5428:
 #0: ffff8881090f80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034732e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
1 lock held by udevd/19084:
 #0: ffff888162b29350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
5 locks held by syz.0.18371/4520:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 33 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+0xfd3/0x1030
 kthread+0x388/0x470
 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: 4520 Comm: syz.0.18371 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+0x36/0x70
Code: 88 70 73 11 65 8b 15 a9 70 73 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 cc 16 00 00 00 74 2c 8b 91 a8 16 00 00 <83> fa 02 75 21 48 8b 91 b0 16 00 00 48 8b 32 48 8d 7e 01 8b 89 ac
RSP: 0018:ffffc900088f7458 EFLAGS: 00000246
RAX: ffffffff8460f65a RBX: 0000000000000001 RCX: ffff888185098000
RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000007
RBP: 0000000000000000 R08: ffffffff9a612a63 R09: 1ffffffff34c254c
R10: dffffc0000000000 R11: ffffffff84614e80 R12: ffffffff8e7f6500
R13: 0000000000200000 R14: ffffffff8e7f6500 R15: ffff888160ebff00
FS:  00007f6aaf3b46c0(0000) GS:ffff8882a928d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc849e8158 CR3: 0000000183e41000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 cap_capable+0xda/0x460
 security_vm_enough_memory_mm+0x6c/0x4f0
 shmem_inode_acct_blocks+0xd5/0x460
 shmem_alloc_and_add_folio+0x8df/0xf80
 shmem_get_folio_gfp+0x5a9/0x1670
 shmem_fallocate+0x96f/0xec0
 vfs_fallocate+0x669/0x7e0
 file_ioctl+0x5bf/0x860
 do_vfs_ioctl+0xc26/0x1530
 __se_sys_ioctl+0x82/0x170
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ab119cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6aaf3b4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6ab1416180 RCX: 00007f6ab119cdd9
RDX: 0000200000000180 RSI: 0000000040305828 RDI: 0000000000000008
RBP: 00007f6ab1232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6ab1416218 R14: 00007f6ab1416180 R15: 00007ffcd2f8aeb8
 </TASK>
