INFO: task kworker/1:2:1228 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2     state:D stack:20800 pid:1228  tgid:1228  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_freezable mmc_rescan
Call Trace:
 <TASK>
 __schedule+0x17db/0x58f0
 schedule+0x164/0x2b0
 schedule_timeout+0xc0/0x2c0
 wait_for_completion+0x2ca/0x5e0
 mmc_wait_for_req_done+0x37/0x490
 mmc_wait_for_cmd+0x183/0x2a0
 sdio_reset+0xf4/0x3a0
 mmc_rescan+0x6eb/0x1040
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/1:6:5702 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:6     state:D stack:22136 pid:5702  tgid:5702  ppid:2      task_flags:0x4288060 flags:0x00080000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 __schedule+0x17db/0x58f0
 schedule+0x164/0x2b0
 schedule_timeout+0xc0/0x2c0
 wait_for_completion+0x2ca/0x5e0
 __flush_work+0xa63/0xca0
 __cancel_work_sync+0xbf/0x110
 mmc_stop_host+0xd9/0x460
 mmc_remove_host+0x15/0x60
 vub300_disconnect+0x154/0x2f0
 usb_unbind_interface+0x295/0x9f0
 device_release_driver_internal+0x4f5/0x880
 bus_remove_device+0x444/0x560
 device_del+0x524/0x8f0
 usb_disable_device+0x3d4/0x8d0
 usb_disconnect+0x346/0x9a0
 hub_event+0x1bbb/0x4d30
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/35: 1, last CPU#0:
 #0: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by kworker/1:2/1228: 2, on CPU#1:
 #0: ffff88810006a140 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90006ff7c40 ((work_completion)(&(&host->detect)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
locks held by getty/5420: 2, on CPU#0:
 #0: ffff88817301d0a0 (&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
locks held by kworker/u11:3/5599: 3, on CPU#1:
 #0: ffff8881bf4d5940 ((wq_completion)hci4){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90004de7c40 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff888170d38ea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_power_on+0x1a2/0x750
locks held by kworker/1:6/5702: 5, on CPU#1:
 #0: ffff88816373e140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc900062efc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff88816a0341d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30
 #3: ffff8881a2a5c1d8 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0xfc/0x9a0
 #4: ffff8881bf6811a0 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb9/0x880
locks held by syz-executor/10147: 7, last CPU#1:
 #0: ffffffff8ee36650 (dup_mmap_sem){++++}-{0:0}, at: copy_mm+0x10a/0x480
 #1: ffff8881a2d56540 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x195/0x1dc0
 #2: ffff8881bdd3f180 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x221/0x1dc0
 #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240
 #4: ffff8881bb7063d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210
 #5: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240
 #6: ffff8881bfffbc78 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range+0x6fb/0x5c10
locks held by syz.4.5085/18193: 1, on CPU#0:
 #0: ffff88816a0341d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770
locks held by syz.7.6647/21718: 2, on CPU#1:
 #0: ffff88816b2571b0 (&tty->legacy_mutex){+.+.}-{4:4}, at: __tty_hangup+0xb8/0x690
 #1: ffff88816b2570a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock+0x6c/0xc0

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

NMI backtrace for cpu 0
CPU: 0 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+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: 10147 Comm: syz-executor 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:__sanitizer_cov_trace_const_cmp4+0x4c/0xb0
Code: d0 41 81 e0 00 01 00 0f 41 81 f8 00 01 00 00 41 0f 95 c0 81 fa 00 00 00 10 0f 93 c2 44 08 c2 75 5b 83 b9 44 17 00 00 00 74 52 <8b> 91 18 17 00 00 83 fa 03 75 47 48 8b 91 20 17 00 00 44 8b 89 1c
RSP: 0018:ffffc90003c9f2d8 EFLAGS: 00000246
RAX: ffffffff821f388a RBX: ffffea0006800b34 RCX: ffff888171733c00
RDX: 8000000000000002 RSI: 0000000000000084 RDI: 0000000000000080
RBP: ffffc90003c9f570 R08: ffffea0006800b37 R09: 1ffffd4000d00166
R10: dffffc0000000000 R11: fffff94000d00167 R12: ffffea0006800b00
R13: ffffea0006800b00 R14: 0000000000000084 R15: dffffc0000000000
FS:  0000555578d90500(0000) GS:ffff8882a8cc7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7df05556c8 CR3: 000000016935a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 copy_pmd_range+0xa1a/0x5c10
 copy_page_range+0xc82/0x1290
 dup_mmap+0xf17/0x1dc0
 copy_mm+0x115/0x480
 copy_process+0x1e79/0x4400
 kernel_clone+0x2d7/0x940
 __x64_sys_clone+0x1b6/0x230
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7def7c6bd2
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007fffd33ff390 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fffd33ff390 RCX: 00007f7def7c6bd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fffd33ff51c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555578d907d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000008713b R15: 00007fffd33ff570
 </TASK>
