INFO: task syz.1.166:5134 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.166       state:D stack:0     pid:5134  tgid:5133  ppid:3154   flags:0x00000004
Call Trace:
[<ffffffff85fe99a2>] context_switch kernel/sched/core.c:5328 [inline]
[<ffffffff85fe99a2>] __schedule+0xd58/0x3848 kernel/sched/core.c:6690
[<ffffffff85fec556>] __schedule_loop kernel/sched/core.c:6767 [inline]
[<ffffffff85fec556>] schedule+0xc4/0x324 kernel/sched/core.c:6782
[<ffffffff85fecea0>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6839
[<ffffffff85ff0718>] __mutex_lock_common kernel/locking/mutex.c:684 [inline]
[<ffffffff85ff0718>] __mutex_lock+0x86a/0x1022 kernel/locking/mutex.c:752
[<ffffffff85ff0ee4>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:804
[<ffffffff83446e46>] device_lock include/linux/device.h:1014 [inline]
[<ffffffff83446e46>] usbdev_open+0x1c6/0x7c2 drivers/usb/core/devio.c:1051
[<ffffffff80a388be>] chrdev_open+0x226/0x614 fs/char_dev.c:414
[<ffffffff80a18528>] do_dentry_open+0x5d0/0x10a2 fs/open.c:958
[<ffffffff80a1cf40>] vfs_open+0xbe/0x37a fs/open.c:1088
[<ffffffff80a6a3e6>] do_open fs/namei.c:3774 [inline]
[<ffffffff80a6a3e6>] path_openat+0x1b70/0x28c2 fs/namei.c:3933
[<ffffffff80a6b2aa>] do_filp_open+0x172/0x328 fs/namei.c:3960
[<ffffffff80a1dce0>] do_sys_openat2+0x174/0x1ca fs/open.c:1415
[<ffffffff80a1e68c>] do_sys_open fs/open.c:1430 [inline]
[<ffffffff80a1e68c>] __do_sys_openat fs/open.c:1446 [inline]
[<ffffffff80a1e68c>] __se_sys_openat fs/open.c:1441 [inline]
[<ffffffff80a1e68c>] __riscv_sys_openat+0x178/0x1fe fs/open.c:1441
[<ffffffff8000f2cc>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85fdfb66>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff860029b6>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
1 lock held by khungtaskd/36:
 #0: ffffffff881cc080 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
2 locks held by getty/3118:
 #0: ff6000001c3a60a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ff2000000008b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd7c/0x129a drivers/tty/n_tty.c:2211
11 locks held by kworker/0:0/3760:
 #0: ff60000014a9b148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff2000000c497c90 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
 #2: ff6000001b657190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #2: ff6000001b657190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bc/0x48a4 drivers/usb/core/hub.c:5849
 #3: ff6000001be8c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ff6000001be8c190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x462 drivers/base/dd.c:1005
 #4: ff6000001b65a160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ff6000001b65a160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x462 drivers/base/dd.c:1005
 #5: ff600000301ecd60 (&dev->phy_mutex){+.+.}-{3:3}, at: __asix_mdio_read+0xac/0x2a2 drivers/net/usb/asix_common.c:504
 #6: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:598 [inline]
 #6: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1505 [inline]
 #6: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1804 [inline]
 #6: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x278/0x3848 kernel/sched/core.c:6589
 #7: ff6000005cdbf648 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x22c/0x71a kernel/sched/psi.c:987
 #8: ff60000018560a58 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
 #8: ff60000018560a58 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xb0/0x1a20 kernel/sched/core.c:4165
 #9: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:598 [inline]
 #9: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1505 [inline]
 #9: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1804 [inline]
 #9: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: ttwu_queue kernel/sched/core.c:3951 [inline]
 #9: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: try_to_wake_up+0x4cc/0x1a20 kernel/sched/core.c:4281
 #10: ff6000005cdbf648 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_change+0x162/0x27a kernel/sched/psi.c:912
1 lock held by syz.1.166/5134:
 #0: ff6000001b657190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #0: ff6000001b657190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1c6/0x7c2 drivers/usb/core/devio.c:1051
3 locks held by syz.0.272/6047:
2 locks held by syz.2.273/6048:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 36 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a0c>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff85f822a0>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff85fdd896>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff85fdd896>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff85fdd926>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85f45986>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85f45c3e>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff8001996c>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432008>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432008>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432008>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154924>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff86002ace>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6047 Comm: syz.0.272 Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
Hardware name: riscv-virtio,qemu (DT)
epc : __sanitizer_cov_trace_cmp8+0x0/0x1c kernel/kcov.c:293
 ra : vm_normal_page+0xf6/0x3e2 mm/memory.c:645
epc : ffffffff8042fe3e ra : ffffffff80816ddc sp : ff20000005f67540
 gp : ffffffff899c0180 tp : ff6000001b0e1a40 t0 : ff6000001b0e2560
 t1 : ffe37fff0016748e t2 : 0000000000000006 s0 : ff20000005f67610
 s1 : 00000000000ace92 a0 : 00000000000fffff a1 : 00000000000ace92
 a2 : 0000000000000002 a3 : ffffffff80816dc8 a4 : 0000000000000000
 a5 : ff6000001b0e2a40 a6 : 0000000000000003 a7 : ff1c000000b3a473
 s2 : 1fe4000000beceac s3 : 00000000000fffff s4 : ff20000005f675c0
 s5 : ff600000190e46c8 s6 : 00007fffba9c0000 s7 : 0000000000000000
 s8 : 1fec00000389adc0 s9 : 00007fffba9c0000 s10: ff20000005f67b60
 s11: ff1c000000b3a458 t3 : 1fec00000361c4ab t4 : ffe37fff0016748e
 t5 : ffe37fff0016748f t6 : 1fec00000361c4bf
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff8042fe3e>] __sanitizer_cov_trace_cmp8+0x0/0x1c kernel/kcov.c:289
[<ffffffff808185a2>] zap_present_ptes mm/memory.c:1549 [inline]
[<ffffffff808185a2>] zap_pte_range mm/memory.c:1621 [inline]
[<ffffffff808185a2>] zap_pmd_range mm/memory.c:1739 [inline]
[<ffffffff808185a2>] zap_pud_range mm/memory.c:1768 [inline]
[<ffffffff808185a2>] zap_p4d_range mm/memory.c:1789 [inline]
[<ffffffff808185a2>] unmap_page_range+0x970/0x2922 mm/memory.c:1810
[<ffffffff8081a66e>] unmap_single_vma.constprop.0+0x11a/0x1f0 mm/memory.c:1856
[<ffffffff8081a924>] unmap_vmas+0x1e0/0x3fa mm/memory.c:1900
[<ffffffff8084c0ac>] exit_mmap+0x18c/0xbea mm/mmap.c:1913
[<ffffffff800b5b26>] __mmput kernel/fork.c:1348 [inline]
[<ffffffff800b5b26>] mmput+0x122/0x3e2 kernel/fork.c:1370
[<ffffffff800d88ae>] exit_mm kernel/exit.c:571 [inline]
[<ffffffff800d88ae>] do_exit+0x902/0x2986 kernel/exit.c:926
[<ffffffff800dae92>] do_group_exit+0xd4/0x26c kernel/exit.c:1088
[<ffffffff800db074>] __do_sys_exit_group kernel/exit.c:1099 [inline]
[<ffffffff800db074>] __se_sys_exit_group kernel/exit.c:1097 [inline]
[<ffffffff800db074>] __riscv_sys_exit_group+0x4a/0x54 kernel/exit.c:1097
[<ffffffff8000f2cc>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85fdfb66>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff860029b6>] _new_vmalloc_restore_context_a0+0xc2/0xce