INFO: task udevd:5601 blocked in I/O wait 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:24776 pid:5601  tgid:5601  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: 0033:0x7f74265169a4
RSP: 002b:00007ffd8fe7c150 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055f074159930 RCX: 00007f74265169a4
RDX: 00000000000a0800 RSI: 000055f07415a510 RDI: 00000000ffffff9c
RBP: 000055f07415a510 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055f07416aaa0 R14: 0000000000000001 R15: 000055f074159910
 </TASK>

Showing all locks held in the system:
locks held by pr/ttyS0/16: 1, last CPU#1:
 #0: ffffffff8ec367b8 (console_srcu){....}-{0:0}, at: console_srcu_read_lock+0x30/0x60
locks held by khungtaskd/34: 1, last CPU#1:
 #0: ffffffff8ed5cbe0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by udevd/5042: 2, last CPU#1:
 #0: ffffffff8f4f3f78 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_check_open_permission+0x1d3/0x470
 #1: ffffffff8ed5cbe0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550
locks held by getty/5420: 2, on CPU#0:
 #0: ffff888174ce50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034832e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
locks held by udevd/5601: 1, on CPU#0:
 #0: ffff888102bf4350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by syz.6.2567/17250: 1, on CPU#0:
 #0: ffff888102bf4350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by syz.6.2567/17257: 1, on CPU#1:
 #0: ffff888102bf4350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by syz.0.2886/18452: 2, last CPU#1:
 #0: ffff88811bdf4460 (sb_writers#5){.+.+}-{0:0}, at: vfs_coredump+0x3766/0x4530
 #1: ffff88811725f650 (&sb->s_type->i_mutex_key#15){+.+.}-{4:4}, at: shmem_file_write_iter+0x7f/0x120
locks held by syz.8.2885/18454: 2, on CPU#0:
 #0: ffff888012bc00e8 (&type->s_umount_key#49/1){+.+.}-{4:4}, at: sget_fc+0x97c/0x1a40
 #1: ffffffff8ebf9540 (wq_pool_mutex){+.+.}-{4:4}, at: __alloc_workqueue+0xa4f/0x1fe0
locks held by syz.4.2887/18469: 4, last CPU#1:
 #0: ffffffff8ee36150 (dup_mmap_sem){++++}-{0:0}, at: copy_mm+0x10f/0x480
 #1: ffff88801b5d4378 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x195/0x1dc0
 #2: ffff88816d2cc378 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x221/0x1dc0
 #3: ffffffff8ed5cbe0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240
locks held by udevadm/18475: 2, last CPU#0:
 #0: ffffffff8f4f3f78 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_perm+0x251/0x560
 #1: ffffffff8ed5cbe0 (rcu_read_lock){....}-{1:3}, at: fast_dput+0x2a4/0x690

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

NMI backtrace for cpu 1
CPU: 1 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+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: 18475 Comm: udevadm 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:__sanitizer_cov_trace_pc+0x0/0x80
Code: 89 fb e8 23 00 00 00 48 8b 3d 84 06 ad 0c 48 89 de 5b e9 a3 9f 64 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0d 18 86 cd 11 65 48 8b 15 18 86
RSP: 0018:ffffc90009617cc8 EFLAGS: 00000286
RAX: ffff8881022ec000 RBX: ffff88811eac8006 RCX: ffff888102f8bc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88811eac8000 R08: ec00000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8ed5cbe0 R12: ffff888163bd52d0
R13: ffff888103eb03c0 R14: 0000000000000006 R15: 0000000000000006
FS:  00007f9f660c1c80(0000) GS:ffff88818d6cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557122126c28 CR3: 0000000012ae2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 kernfs_iop_get_link+0x1e6/0x6c0
 vfs_readlink+0x24a/0x540
 do_readlinkat+0x218/0x510
 __x64_sys_readlink+0x7f/0x90
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9f65d17d47
Code: 73 01 c3 48 8b 0d e1 90 0d 00 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 59 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b1 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffda67f3d18 EFLAGS: 00000202 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 0000557122124140 RCX: 00007f9f65d17d47
RDX: 0000000000000400 RSI: 00007ffda67f4128 RDI: 00007ffda67f3d28
RBP: 00007ffda67f4568 R08: 000000000000fcf2 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000202 R12: 0000000000000200
R13: 00007ffda67f4128 R14: 00007ffda67f3d28 R15: 0000557122112da0
 </TASK>
