INFO: task udevd:6030 blocked 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:22120 pid:6030  tgid:6030  ppid:5277   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 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+0x92/0xef0
 bdev_disk_changed+0x765/0x14c0
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x470/0x610
 do_dentry_open+0x7ce/0x1420
 vfs_open+0x3b/0x340
 path_openat+0x3486/0x3e20
 do_filp_open+0x22d/0x490
 do_sys_openat2+0x12f/0x220
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f194d9169a4
RSP: 002b:00007ffcb1c12470 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055f4de64c330 RCX: 00007f194d9169a4
RDX: 00000000000a0800 RSI: 000055f4de6294c0 RDI: 00000000ffffff9c
RBP: 000055f4de6294c0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055f4de64ffe0 R14: 0000000000000001 R15: 000055f4de628910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e35a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by udevd/6030:
 #0: ffff88816ae11358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
2 locks held by getty/12325:
 #0: ffff88817539c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900056132f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
2 locks held by syz.9.4037/19992:
2 locks held by syz.9.4037/19993:
3 locks held by syz.3.4040/19996:
 #0: ffff88811a413208 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: sock_close+0x9b/0x240
 #1: ffff88816a9a1260 (sk_lock-AF_CAN){+.+.}-{0:0}, at: bcm_release+0x1cd/0x940
 #2: ffffffff8e360c78 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 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+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xf90/0xfe0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 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: 19993 Comm: syz.9.4037 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:hrtimer_interrupt+0x83/0xaa0
Code: 42 80 3c 30 00 74 08 48 89 df e8 a8 55 7a 00 48 8b 1b 48 8d 93 8c 52 d0 92 48 89 d0 48 c1 e8 03 48 89 44 24 18 42 0f b6 04 30 <84> c0 48 89 14 24 0f 85 2e 09 00 00 0f b6 2a 89 ee 83 e6 01 31 ff
RSP: 0018:ffffc90000007ea0 EFLAGS: 00000803
RAX: 0000000000000000 RBX: ffff88818e323000 RCX: ffff888113489d40
RDX: ffff88812102828c RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: ffffffff8fcef877 R09: 1ffffffff1f9df0e
R10: dffffc0000000000 R11: ffffffff81afcb70 R12: dffffc0000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888121023e40
FS:  0000000000000000(0000) GS:ffff88818e323000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff1fd9e8400 CR3: 0000000113be4000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __sysvec_apic_timer_interrupt+0x102/0x3d0
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_is_watching+0x15/0xb0
Code: 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 ff 05 50 79 27 11 e8 4b 02 d1 09 <89> c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0
RSP: 0018:ffffc90005186670 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff8881210336f8 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8be74b60 RDI: ffffffff8be74b20
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff33c0d14 R12: ffffea00047a5e80
R13: ffffffff81ff8e80 R14: ffff8881210336f8 R15: ffffffff92d10728
 lock_release+0x4b/0x3a0
 __folio_batch_add_and_move+0x768/0xc50
 shmem_alloc_and_add_folio+0xce0/0xf80
 shmem_get_folio_gfp+0x5a9/0x1670
 shmem_write_begin+0x16c/0x330
 generic_perform_write+0x2e2/0x8f0
 shmem_file_write_iter+0xf8/0x120
 __kernel_write_iter+0x41e/0x880
 dump_user_range+0x8ba/0xc70
 elf_core_dump+0x34c2/0x3ad0
 coredump_write+0x11de/0x1980
 vfs_coredump+0x369e/0x4270
 get_signal+0x1107/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 irqentry_exit+0x176/0x620
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7ff1fd8514f7
Code: e8 8e fa ff ff 89 f2 48 8d 3d 15 38 1b 00 48 8d 35 01 38 1b 00 31 c0 e8 e7 f8 ff ff 0f 1f 80 00 00 00 00 53 89 fb 48 83 ec 10 <64> 8b 04 25 a4 ff ff ff 85 c0 74 2a 89 fe 31 c0 bf 3c 00 00 00 e8
RSP: 002b:00007ff1fe7530a0 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007ff1fd99acb9
RDX: 00007ff1fe7530c0 RSI: 00007ff1fe7531f0 RDI: 000000000000000b
RBP: 00007ff1fda08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ff1fdc16128 R14: 00007ff1fdc16090 R15: 00007ffd2b32a1e8
 </TASK>
