INFO: task syz.2.181:6711 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.181       state:D stack:25264 pid:6711  tgid:6710  ppid:5605   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 schedule_timeout+0xc0/0x2c0
 wait_for_completion+0x2ca/0x5e0
 trigger_card_free+0x147/0x1d0
 devres_release_all+0x1a8/0x260
 device_release_driver_internal+0x5d9/0x880
 unbind_store+0x1a1/0x1d0
 kernfs_fop_write_iter+0x3a4/0x540
 vfs_write+0x612/0xba0
 ksys_write+0x150/0x270
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f272779e0d9
RSP: 002b:00007f27285da028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2727a25fa0 RCX: 00007f272779e0d9
RDX: 000000000000000b RSI: 00002000000002c0 RDI: 0000000000000004
RBP: 00007f2727835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2727a26038 R14: 00007f2727a25fa0 R15: 00007ffdf1b61c58
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/36:
 #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by kworker/u10:8/1104:
 #0: ffff8881698a4940 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc900070d7c40 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
5 locks held by kworker/0:2/1278:
 #0: ffff88816864e540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90007b07c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffff8881063ce1d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30
 #3: ffff88812103b160 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160
 #4: ffff888102ef1018 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x72f/0x10a0
2 locks held by klogd/5035:
 #0: ffff88823c63b160 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160
 #1: ffff88823c624440 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0
2 locks held by getty/5427:
 #0: ffff88816ed4d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034762e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
1 lock held by udevd/5978:
 #0: ffff88816d590350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
4 locks held by syz.2.181/6711:
 #0: ffff8881bc49b4f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x246/0x320
 #1: ffff88817339c450 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x22b/0xba0
 #2: ffff88816f44d080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d8/0x540
 #3: ffff88810ffc6138 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb9/0x880
1 lock held by syz-executor/9231:
 #0: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 36 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/0x380
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x388/0x470
 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: 10599 Comm: segctord 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:__lock_acquire+0x220c/0x2e50
Code: 0e 48 c7 c6 50 fd 34 8e 67 48 0f b9 3a 90 31 c0 48 8b 3c 24 48 8b 74 24 08 48 83 c0 30 48 39 c3 0f 84 72 f2 ff ff 4c 8b 7b 10 <48> 8b 46 f8 25 ff 1f 00 00 48 0f a3 05 13 43 d1 12 0f 82 5c ff ff
RSP: 0018:ffffc900065defc8 EFLAGS: 00000002
RAX: ffffffff941522f0 RBX: ffffffff97005948 RCX: 0000000000020001
RDX: 0000000000030000 RSI: ffff888172b0c7d0 RDI: ffff888172b0bc00
RBP: c5e73a564421240d R08: 0000000000000000 R09: 0000000000000020
R10: 0000000000000000 R11: ffffffff81a30f00 R12: 0000000000000004
R13: 0000000000000001 R14: ffff888172b0c7d0 R15: ffffffff94162df0
FS:  0000000000000000(0000) GS:ffff8882a8f5c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f64a73ef2f8 CR3: 0000000110122000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x115/0x350
 seqcount_lockdep_reader_access+0x75/0xc0
 bad_range+0x8e/0x2a0
 get_page_from_freelist+0x21f0/0x2280
 __alloc_frozen_pages_noprof+0x217/0x5a0
 allocate_slab+0x7c/0x5e0
 refill_objects+0x2d5/0x350
 __pcs_replace_empty_main+0x2bf/0x6b0
 kmem_cache_alloc_noprof+0x382/0x5f0
 nilfs_segbuf_new+0x4c/0x250
 nilfs_segctor_do_construct+0xb08/0x7bb0
 nilfs_segctor_construct+0x170/0x690
 nilfs_segctor_thread+0x6c9/0xdb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
