INFO: task udevd:6959 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:21928 pid:6959  tgid:6959  ppid:5281   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 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+0x3a8/0x510
 do_dentry_open+0xdf3/0x1970
 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: 0033:0x7f8f299169a4
RSP: 002b:00007ffedfb769b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000563b425c97d0 RCX: 00007f8f299169a4
RDX: 00000000000a0800 RSI: 0000563b425285c0 RDI: 00000000ffffff9c
RBP: 0000563b425285c0 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000563b4253a0e0 R14: 0000000000000001 R15: 0000563b42527910
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/1:0/24:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900001c7bc0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff888125673240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x26b/0x3180
1 lock held by khungtaskd/34:
 #0: ffffffff8e13ee60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5658:
 #0: ffff8881098030a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029132f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz-executor/5757:
3 locks held by kworker/0:4/5879:
1 lock held by udevd/6959:
 #0: ffff888020a5f358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
8 locks held by kworker/u8:5/15654:
 #0: ffff88801b2f6948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900062efbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f50fd50 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800
 #3: ffff8881269ec0e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x10a/0x3d0
 #4: ffff8881269ef250 (&devlink->lock_key#49){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x11c/0x3d0
 #5: ffffffff8f51c948 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0xdb/0x670
 #6: ffff88803f44cd30 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x5a1/0x2320
 #7: ffffffff8e144978 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730
2 locks held by syz-executor/16502:
 #0: ffffffff8f50fd50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x304/0x4d0
 #1: ffffffff8f51c948 (rtnl_mutex){+.+.}-{4:4}, at: ip_tunnel_init_net+0x2ab/0x800
1 lock held by syz-executor/16504:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8-dirty #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+0xfee/0x1030
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 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: 1 Comm: init Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8-dirty #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:sigaction_compat_abi+0x12/0xb0
Code: eb 83 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 53 48 89 fb e8 fe 81 5b 00 <48> 85 db 74 42 49 bf 00 00 00 00 00 fc ff df 65 4c 8b 34 25 08 30
RSP: 0018:ffffc90000047d28 EFLAGS: 00000093
RAX: ffffffff8164dc72 RBX: ffffc90000047e00 RCX: ffff888100688000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000047e00
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000008f88 R12: ffffc90000047e08
R13: ffffc90000047e00 R14: 000000000000000e R15: 00000000000001a0
FS:  00007f93106ea380(0000) GS:ffff8881a3c1d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15f603d580 CR3: 00000001000f2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_sigaction+0x224/0x750
 __x64_sys_rt_sigaction+0x1bf/0x270
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f93107aeb57
Code: 4d 85 c0 74 0e 48 8d 54 24 20 31 f6 48 85 c0 75 04 eb 07 31 d2 48 8d 74 24 88 41 ba 08 00 00 00 44 89 cf b8 0d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 a2 a2 16 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd52aba0f0 EFLAGS: 00000246 ORIG_RAX: 000000000000000d
RAX: ffffffffffffffda RBX: ffffffffffffff80 RCX: 00007f93107aeb57
RDX: 0000000000000000 RSI: 00007ffd52aba078 RDI: 000000000000000e
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000e
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd52aba1d0 R14: 0000000000000002 R15: 000000000000404e
 </TASK>
