INFO: task udevd:3877 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:22632 pid:3877  tgid:3877  ppid:5298   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 do_read_cache_folio+0x1aa/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+0x953/0x13f0
 vfs_open+0x3b/0x340
 path_openat+0x2ee5/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f023a5169a4
RSP: 002b:00007ffe1afbc9c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005615496fd910 RCX: 00007f023a5169a4
RDX: 00000000000a0800 RSI: 00005615496f5cc0 RDI: 00000000ffffff9c
RBP: 00005615496f5cc0 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000561549701610 R14: 0000000000000001 R15: 00005615496df910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13a0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5676:
 #0: ffff8880276740a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by udevd/3875:
 #0: ffff888022bfa358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/3877:
 #0: ffff88802255e358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/9390:
 #0: ffff888022bfe358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by syz.1.19987/23195:

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

NMI backtrace for cpu 1
CPU: 1 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+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 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: 23195 Comm: syz.1.19987 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:__lock_acquire+0x38b/0xd20
Code: 00 75 19 90 48 c7 c7 6f 8a ba 8d 48 c7 c6 8f d7 a9 8d e8 88 e4 e5 ff 90 0f 0b 90 90 90 31 c0 48 8b 3c 24 0f b6 98 c4 00 00 00 <41> 8b 46 20 25 ff 1f 00 00 48 0f a3 05 a4 3d 0b 12 73 17 48 69 c0
RSP: 0018:ffffc90000007b20 EFLAGS: 00000002
RAX: ffffffff9349d380 RBX: 0000000000000002 RCX: 000000000000003e
RDX: 0000000000080000 RSI: 0000000000004000 RDI: ffff888127c43980
RBP: 000000000000003e R08: 0000000000000000 R09: ffffffff818ffbfa
R10: dffffc0000000000 R11: ffffed1004263087 R12: 0000000000004000
R13: 0000000000000000 R14: ffff888127c444c0 R15: ffff888127c44470
FS:  00007f4a6f2ec6c0(0000) GS:ffff8880b8612000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000c83030 CR3: 0000000123976000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 lock_acquire+0x120/0x360
 _raw_spin_lock_nested+0x32/0x50
 raw_spin_rq_lock_nested+0x2a/0x140
 try_to_wake_up+0x635/0x12b0
 hrtimer_wakeup+0x4e/0x60
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_is_held_type+0x51/0x190
Code: 5e 29 04 00 0f 84 fe 00 00 00 65 8b 05 08 a5 26 07 85 c0 0f 85 ef 00 00 00 65 4c 8b 2c 25 08 e0 a0 92 41 83 bd ec 0a 00 00 00 <0f> 85 d8 00 00 00 89 f5 49 89 fe 48 c7 04 24 00 00 00 00 9c 8f 04
RSP: 0018:ffffc900209c7598 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffff888127c43980
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8e13a1a0
RBP: ffffc900209c76f0 R08: 0000000000000000 R09: ffffffff8abc8686
R10: ffffc900209c7940 R11: ffffffff8abc8500 R12: dffffc0000000000
R13: ffff888127c43980 R14: ffff88812cd75580 R15: ffff88812cd756e8
 __might_resched+0xf5/0x610
 lock_sock_nested+0x5d/0x100
 sctp_recvmsg+0x186/0xd30
 inet_recvmsg+0x24a/0x250
 sock_recvmsg_nosec+0x11d/0x1c0
 ____sys_recvmsg+0x3aa/0x460
 ___sys_recvmsg+0x1b5/0x510
 do_recvmmsg+0x307/0x770
 __x64_sys_recvmmsg+0x190/0x240
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4a6e38ec29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4a6f2ec038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f4a6e5d5fa0 RCX: 00007f4a6e38ec29
RDX: 0000000004000169 RSI: 0000200000005000 RDI: 0000000000000004
RBP: 00007f4a6e411e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000060 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4a6e5d6038 R14: 00007f4a6e5d5fa0 R15: 00007fff17346d38
 </TASK>
