INFO: task udevd:10101 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:25480 pid:10101 tgid:10101 ppid:5044   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: 0033:0x7ff42cb169a4
RSP: 002b:00007ffe9b67f620 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055b676585780 RCX: 00007ff42cb169a4
RDX: 00000000000a0800 RSI: 000055b67657bcc0 RDI: 00000000ffffff9c
RBP: 000055b67657bcc0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055b676589750 R14: 0000000000000001 R15: 000055b676565910
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/34: 1, last CPU#0:
 #0: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by getty/5422: 2, on CPU#0:
 #0: ffff8881692450a0 (&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/10077: 1, on CPU#1:
 #0: ffff8881637a7350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by udevd/10101: 1, on CPU#0:
 #0: ffff8881637e9350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by syz.3.9180/27749: 1, last CPU#1:
 #0: ffffffff90250d00 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
locks held by syz.4.9185/27764: 2, on CPU#1:
 #0: ffffffff907a4a40 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff90250d00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xc10/0x1c30
locks held by syz.4.9185/27765: 1, on CPU#0:
 #0: ffffffff90250d00 (rtnl_mutex){+.+.}-{4:4}, at: bpf_xdp_link_attach+0x120/0x990
locks held by syz.1.9187/27769: 1, on CPU#0:
 #0: ffffffff90250d00 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_del_ifaddr+0x10b/0x180

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

NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5026 Comm: syslogd 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:rcu_is_watching+0x5f/0xb0
Code: 03 42 80 3c 38 00 74 08 4c 89 f7 e8 bb 32 8b 00 48 c7 c3 18 9a 95 93 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 35 <8b> 03 65 48 ff 0d 87 12 e8 11 74 11 83 e0 04 c1 e8 02 5b 41 5e 41
RSP: 0018:ffffc9000346f3d8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88823c633a18 RCX: 8000000000000001
RDX: ffffffff91203301 RSI: ffffffff8c6d9260 RDI: ffffffff8c6d9220
RBP: 1ffffffff2240601 R08: ffffc9000346f890 R09: 0000000000000000
R10: ffffc9000346f558 R11: fffff5200068dead R12: ffffc90003468000
R13: ffffffff8177f22f R14: ffffffff8e7457d8 R15: dffffc0000000000
FS:  00007fee631f7380(0000) GS:ffff8882a8cda000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d867eb840 CR3: 000000011a248000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_release+0x4b/0x3c0
 unwind_next_frame+0x1baa/0x2550
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x650
 skb_release_data+0x85e/0xab0
 __kfree_skb+0x5d/0x210
 __unix_dgram_recvmsg+0x9e1/0xd70
 sock_recvmsg+0x196/0x1e0
 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: 0033:0x7fee6334bb6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe6a00ffc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fee6334bb6a
RDX: 00000000000000ff RSI: 00005599e6c0e950 RDI: 0000000000000000
RBP: 00005599e6c0e910 R08: 0000000000000000 R09: 0000000000000000
R10: 00005599e6c0ef00 R11: 0000000000000246 R12: 00005599e6c0e99f
R13: 00005599e6c0e950 R14: 0000000000000000 R15: 00007fee63530a80
 </TASK>
