INFO: task udevd:17852 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:17852 tgid:17852 ppid:5043   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: 0033:0x7f631cb169a4
RSP: 002b:00007ffe014ba090 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055b1d58c0610 RCX: 00007f631cb169a4
RDX: 00000000000a0800 RSI: 000055b1d58a6ad0 RDI: 00000000ffffff9c
RBP: 000055b1d58a6ad0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055b1d58aeaa0 R14: 0000000000000001 R15: 000055b1d589d910
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/35: 1, last CPU#0:
 #0: ffffffff8fd5ce60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by getty/5420: 2, on CPU#1:
 #0: ffff8881777c20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034932e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
locks held by syz-executor/5597: 4, last CPU#0:
 #0: ffffffff8fe3bb30 (dup_mmap_sem){++++}-{0:0}, at: copy_mm+0x10a/0x480
 #1: ffff888111d0ccc0 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x195/0x1dc0
 #2: ffff888111d0c080 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x221/0x1dc0
 #3: ffffffff8fd5ce60 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240
locks held by kworker/1:10/12556: 2, last CPU#1:
 #0: ffff888100069d40 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90007347c40 ((gc_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
locks held by udevd/17852: 1, on CPU#1:
 #0: ffff88810a073350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by kworker/u8:7/30939: 2, last CPU#1:
 #0: ffff88817485d140 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000f45fc40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
locks held by syz.1.6907/31397: 1, last CPU#0:
 #0: ffffffff8fd5ce60 (rcu_read_lock){....}-{1:3}, at: is_module_text_address+0x1d/0x1e0

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 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: 30939 Comm: kworker/u8:7 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
Workqueue: bat_events batadv_tt_purge
RIP: 0010:native_apic_msr_write+0x39/0x50
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 cc cc cc cc cc 89 f6 31 d2 e9 26 f2 ac 03 66 0f 1f 44 00
RSP: 0018:ffffc90000a18d30 EFLAGS: 00000046
RAX: 000000000007ddcb RBX: ffff88823c623c80 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000007ddcb RDI: 0000000000000838
RBP: ffffc90000a18df0 R08: 0000000000000100 R09: 0000000000000001
R10: 0000000000000003 R11: ffffffff81756510 R12: 000000000007ddcb
R13: dffffc0000000000 R14: 000000000fffd106 R15: 0000000000000020
FS:  0000000000000000(0000) GS:ffff8882a7cab000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6fd87f3078 CR3: 000000000fb48000 CR4: 00000000000006f0
DR0: 0000000000000003 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lapic_next_event+0x11/0x20
 clockevents_program_event+0x385/0x630
 __hrtimer_rearm_deferred+0x36c/0x4b0
 irqentry_exit+0x8d3/0x910
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 7d e1 b4 f5 f7 c3 00 02 00 00 74 05 e8 00 2f e1 f5 9c 58 a9 00 02 00 00 75 29 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> b4 de a5 f5 65 48 8b 05 4c b0 a7 08 48 85 c0 74 18 5b 41 5e e9
RSP: 0018:ffffc90000a18f40 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000283 RCX: 8000000000000102
RDX: 0000000000000002 RSI: ffffffff8e46e7e0 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffff917ac17f R09: 1ffffffff22f582f
R10: dffffc0000000000 R11: fffffbfff22f5830 R12: 0000000000000009
R13: 0000000000000008 R14: ffff88823c628280 R15: 0000000000000100
 handle_softirqs+0x226/0x860
 do_softirq+0x77/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x140
 batadv_tt_purge+0x4ae/0xa10
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
