INFO: task syz-executor:20640 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21832 pid:20640 tgid:20640 ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 v9fs_evict_inode+0x170/0x320
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 shrink_dcache_for_umount+0xa0/0x170
 generic_shutdown_super+0x67/0x2c0
 kill_anon_super+0x3b/0x70
 v9fs_kill_super+0x4c/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f34dbf8ff17
RSP: 002b:00007fff2984c458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f34dc011c05 RCX: 00007f34dbf8ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2984c510
RBP: 00007fff2984c510 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff2984d5a0
R13: 00007f34dc011c05 R14: 00000000001a18c1 R15: 00007fff2984d5e0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5670:
 #0: ffff8881110a30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029032f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
6 locks held by kworker/1:1/12136:
 #0: ffff888104b22d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900072a7bc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff888021c91198 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4a20
 #3: ffff888020aaf198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400
 #4: ffff8881188a6160 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400
 #5: ffff888122cbda20 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400
1 lock held by syz-executor/20640:
 #0: ffff888119d560e0 (&type->s_umount_key#118){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
7 locks held by kworker/u10:2/20810:
 #0: ffff888136639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140
 #1: ffff888136624008 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880
 #2: ffff888136627a98 (hrtimer_bases.lock){-.-.}-{2:2}, at: __hrtimer_run_queues+0x602/0xc60
 #3: ffffffff99afd388 (&____s->seqcount#2){----}-{0:0}, at: ktime_get+0x3e/0x1f0
 #4: ffffffff99cf0000 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0xbb/0x420
 #5: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: ___pte_offset_map+0x29/0x250
 #6: ffff88801a475078 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: __pte_offset_map_lock+0x13e/0x210
1 lock held by syz.1.4749/23134:
 #0: ffff888119d560e0 (&type->s_umount_key#118){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
2 locks held by syz-executor/24553:
 #0: ffffffff8e88dea8 (bio_slab_lock){+.+.}-{4:4}, at: bioset_exit+0x44a/0x690
 #1: ffffffff8e13f840 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570
1 lock held by syz.2.5022/24821:
 #0: ffffffff8e13f978 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #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+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: 24817 Comm: syz.3.5020 Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #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:__hrtimer_next_event_base+0x27/0x2d0
Code: 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 20 49 89 cc 89 d3 49 89 f6 48 89 fd e8 52 0e 12 00 31 ff 89 de e8 89 12 12 00 <85> db 0f 84 64 02 00 00 48 8d 85 80 00 00 00 48 89 44 24 18 48 8d
RSP: 0018:ffffc900001e0e48 EFLAGS: 00000006
RAX: ffffffff81ad9d47 RBX: 0000000000000003 RCX: 0000000000010000
RDX: ffff888021609cc0 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffff888136627a80 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 7fffffffffffffff
R13: 7fffffffffffffff R14: 0000000000000000 R15: 0000000000000008
FS:  00007f32d15316c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f32d0ae1000 CR3: 00000000205c6000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 hrtimer_interrupt+0x568/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:vprintk_emit+0x58f/0x7a0
Code: 85 32 01 00 00 e8 c1 86 1f 00 41 89 df 4d 85 f6 48 8b 1c 24 75 07 e8 b0 86 1f 00 eb 06 e8 a9 86 1f 00 fb 48 c7 c7 80 e1 12 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 b9 35
RSP: 0018:ffffc90002b7f920 EFLAGS: 00000293
RAX: ffffffff81a024e7 RBX: ffffffff81a023a4 RCX: ffff888021609cc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e12e180
RBP: ffffc90002b7fa30 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: dffffc0000000000
R13: 1ffff9200056ff28 R14: 0000000000000200 R15: 0000000000000045
 _printk+0xcf/0x120
 usb_gadget_register_driver_owner+0x20f/0x270
 raw_ioctl+0x149a/0x3c90
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f32d078e7eb
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f32d152ef10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f32d078e7eb
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000004
RBP: 00007f32d152ffe0 R08: 0000000000000000 R09: 00007f32d152ed07
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f32d152efb0 R14: 0000200000000440 R15: 00007f32d0ae0b88
 </TASK>
