INFO: task syz.3.5612:23385 blocked for more than 143 seconds.
      Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.5612      state:D
 stack:23136 pid:23385 tgid:23382 ppid:22696  task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5367 [inline]
 __schedule+0x1ac3/0x5090 kernel/sched/core.c:6748
 __schedule_loop kernel/sched/core.c:6825 [inline]
 schedule+0x163/0x360 kernel/sched/core.c:6840
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6897
 __mutex_lock_common kernel/locking/mutex.c:664 [inline]
 __mutex_lock+0x7fa/0x1000 kernel/locking/mutex.c:732
 device_lock include/linux/device.h:1030 [inline]
 usbdev_open+0x155/0x790 drivers/usb/core/devio.c:1054
 chrdev_open+0x514/0x600 fs/char_dev.c:414
 do_dentry_open+0xdec/0x1960 fs/open.c:956
 vfs_open+0x3b/0x370 fs/open.c:1086
 do_open fs/namei.c:3845 [inline]
 path_openat+0x2caf/0x35d0 fs/namei.c:4004
 do_filp_open+0x284/0x4e0 fs/namei.c:4031
 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429
 do_sys_open fs/open.c:1444 [inline]
 __do_sys_openat fs/open.c:1460 [inline]
 __se_sys_openat fs/open.c:1455 [inline]
 __x64_sys_openat+0x249/0x2a0 fs/open.c:1455
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f741af8bad0
RSP: 002b:00007f741be64b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f741af8bad0
RDX: 0000000000000002 RSI: 00007f741be64c10 RDI: 00000000ffffff9c
RBP: 00007f741be64c10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f741b1a6160 R15: 00007ffe69e6c838
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #0: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x30/0x180 kernel/locking/lockdep.c:6761
4 locks held by kworker/u8:4/62:
2 locks held by getty/5577:
 #0: ffff88814d82d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002fd62f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x53d/0x16b0 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5810:
 #0: ffff8880b8639958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:603
2 locks held by kworker/u8:3/19186:
 #0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
 #0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x990/0x18e0 kernel/workqueue.c:3319
 #1: ffff8880b8623b08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}
, at: psi_task_switch+0x41f/0x7a0 kernel/sched/psi.c:987
2 locks held by kworker/u8:6/19189:
 #0: ffff8880b8639958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:603
 #1: ffff8880b8723b08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41f/0x7a0 kernel/sched/psi.c:987
6 locks held by kworker/0:1/20617:
1 lock held by syz.3.5612/23385:
 #0: ffff888028c72190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1030 [inline]
 #0: ffff888028c72190 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x155/0x790 drivers/usb/core/devio.c:1054
1 lock held by syz.2.5654/23515:
 #0: ffff888028c72190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1030 [inline]
 #0: ffff888028c72190 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x155/0x790 drivers/usb/core/devio.c:1054
2 locks held by syz.7.6036/24787:
2 locks held by syz.6.6059/24856:
 #0: ffff888078464408 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
 #0: ffff888078464408 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: __sock_release net/socket.c:646 [inline]
 #0: ffff888078464408 (&sb->s_type->i_mutex_key#9){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1398
 #1: ffffffff8eb3fc78 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:304 [inline]
 #1: ffffffff8eb3fc78 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x384/0x830 kernel/rcu/tree_exp.h:998

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x4ab/0x4e0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
 watchdog+0x1058/0x10a0 kernel/hung_task.c:399
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 20617 Comm: kworker/0:1 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:vsnprintf+0x116d/0x1230
Code: 70 48 89 de e8 34 b4 b4 f5 48 85 db 74 2f e8 4a af b4 f5 4d 8d 7d ff 48 8b 5c 24 10 4c 39 eb 4c 0f 42 fb 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 89 00 00 00 41 c6 07 00 eb 0a e8 1b af
RSP: 0018:ffffc900056bdc40 EFLAGS: 00000a07
RAX: 1ffff92000ad7bf5 RBX: ffffc900056bdfae RCX: 0000000000100000
RDX: ffffc90019128000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: ffffc900056bdd50 R08: ffffffff8c0ea2dc R09: 1ffff92000ad7bf5
R10: dffffc0000000000 R11: fffff52000ad7bf6 R12: dffffc0000000000
R13: ffffc900856bdf9f R14: ffffffff933c6020 R15: ffffc900056bdfae
FS:  0000000000000000(0000) GS:ffff88812525a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c18f7b338 CR3: 000000000e938000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 sprintf+0xdc/0x130 lib/vsprintf.c:3013
 print_time kernel/printk/printk.c:1381 [inline]
 info_print_prefix+0x16d/0x310 kernel/printk/printk.c:1407
 record_print_text+0x14a/0x430 kernel/printk/printk.c:1456
 printk_get_next_message+0x65b/0x8b0 kernel/printk/printk.c:3006
 console_emit_next_record kernel/printk/printk.c:3074 [inline]
 console_flush_all+0x56b/0xec0 kernel/printk/printk.c:3208
 __console_flush_and_unlock kernel/printk/printk.c:3267 [inline]
 console_unlock+0x151/0x3b0 kernel/printk/printk.c:3307
 vprintk_emit+0x732/0xa10 kernel/printk/printk.c:2432
 dev_vprintk_emit+0x358/0x420 drivers/base/core.c:4891
 dev_printk_emit+0xdf/0x130 drivers/base/core.c:4902
 __netdev_printk+0x3e0/0x4d0 net/core/dev.c:12299
 netdev_warn+0x12d/0x180 net/core/dev.c:12352
 asix_write_cmd drivers/net/usb/asix_common.c:57 [inline]
 asix_set_sw_mii drivers/net/usb/asix_common.c:75 [inline]
 asix_check_host_enable drivers/net/usb/asix_common.c:98 [inline]
 __asix_mdio_read drivers/net/usb/asix_common.c:506 [inline]
 asix_mdio_read+0x23b/0x620 drivers/net/usb/asix_common.c:529
 asix_phy_reset+0xc6/0x1b0 drivers/net/usb/asix_devices.c:215
 ax88172_bind+0x438/0x630 drivers/net/usb/asix_devices.c:275
 usbnet_probe+0xa28/0x27d0 drivers/net/usb/usbnet.c:1761
 usb_probe_interface+0x650/0xbc0 drivers/usb/core/driver.c:396
 really_probe+0x2b9/0xad0 drivers/base/dd.c:658
 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
 driver_probe_device+0x50/0x430 drivers/base/dd.c:830
 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
 bus_for_each_drv+0x258/0x2e0 drivers/base/bus.c:462
 __device_attach+0x341/0x530 drivers/base/dd.c:1030
 bus_probe_device+0x189/0x260 drivers/base/bus.c:537
 device_add+0x856/0xbf0 drivers/base/core.c:3666
 usb_set_configuration+0x1999/0x1fe0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:250
 usb_probe_device+0x1b8/0x380 drivers/usb/core/driver.c:291
 really_probe+0x2b9/0xad0 drivers/base/dd.c:658
 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
 driver_probe_device+0x50/0x430 drivers/base/dd.c:830
 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
 bus_for_each_drv+0x258/0x2e0 drivers/base/bus.c:462
 __device_attach+0x341/0x530 drivers/base/dd.c:1030
 bus_probe_device+0x189/0x260 drivers/base/bus.c:537
 device_add+0x856/0xbf0 drivers/base/core.c:3666
 usb_new_device+0x1052/0x19a0 drivers/usb/core/hub.c:2663
 hub_port_connect drivers/usb/core/hub.c:5533 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x2bfd/0x50f0 drivers/usb/core/hub.c:5915
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd30 kernel/workqueue.c:3400
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>