INFO: task syz.0.920:10520 blocked for more than 431 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.920       state:D stack:0     pid:10520 tgid:10520 ppid:3152   flags:0x00000004
Call Trace:
[<ffffffff85fe3a74>] context_switch kernel/sched/core.c:5315 [inline]
[<ffffffff85fe3a74>] __schedule+0xd5a/0x3886 kernel/sched/core.c:6675
[<ffffffff85fe6664>] __schedule_loop kernel/sched/core.c:6752 [inline]
[<ffffffff85fe6664>] schedule+0xc4/0x324 kernel/sched/core.c:6767
[<ffffffff85ff9412>] schedule_timeout+0x1e2/0x296 kernel/time/timer.c:2591
[<ffffffff85fe8042>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff85fe8042>] __wait_for_common+0x1ca/0x4b6 kernel/sched/completion.c:116
[<ffffffff85fe8348>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff85fe8348>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff846d7512>] __vhost_worker_flush+0x204/0x274 drivers/vhost/vhost.c:288
[<ffffffff846d7636>] vhost_worker_flush drivers/vhost/vhost.c:295 [inline]
[<ffffffff846d7636>] vhost_dev_flush+0xb4/0x114 drivers/vhost/vhost.c:305
[<ffffffff846c811a>] vhost_vsock_flush drivers/vhost/vsock.c:697 [inline]
[<ffffffff846c811a>] vhost_vsock_dev_release+0x234/0x434 drivers/vhost/vsock.c:749
[<ffffffff80a2c758>] __fput+0x378/0x9e6 fs/file_table.c:431
[<ffffffff80a2ce6c>] ____fput+0x1c/0x26 fs/file_table.c:459
[<ffffffff8014fb7c>] task_work_run+0x16a/0x25e kernel/task_work.c:228
[<ffffffff85fdac68>] resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
[<ffffffff85fdac68>] exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
[<ffffffff85fdac68>] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
[<ffffffff85fdac68>] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
[<ffffffff85fdac68>] syscall_exit_to_user_mode+0x30a/0x31e kernel/entry/common.c:218
[<ffffffff85fd9b26>] do_trap_ecall_u+0x86/0x216 arch/riscv/kernel/traps.c:345
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
1 lock held by khungtaskd/36:
 #0: ffffffff87fcc100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
1 lock held by klogd/2969:
2 locks held by getty/3119:
 #0: ff6000001c7e60a0 (&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
1 lock held by syz-executor/3146:
2 locks held by kworker/u10:1/6666:
 #0: ff60000011071148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff200000021f7c90 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
3 locks held by kworker/0:4/8595:
3 locks held by syz-executor/10847:
3 locks held by kworker/1:2/11559:
 #0: ff6000006ec4ed18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:593 [inline]
 #0: ff6000006ec4ed18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1505 [inline]
 #0: ff6000006ec4ed18 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1804 [inline]
 #0: ff6000006ec4ed18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x280/0x3886 kernel/sched/core.c:6575
 #1: ff6000006ec3a648 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x23e/0x732 kernel/sched/psi.c:989
 #2: ff6000006ec3c3d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x7e/0x1fc kernel/time/timer.c:1051
2 locks held by modprobe/12332:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 36 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a14>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff85f7c3cc>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff85fd797a>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff85fd797a>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff85fd7a0a>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85f3faae>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85f3fd66>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff80019974>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432c3c>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432c3c>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432c3c>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154e14>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ffcbde>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12332 Comm: modprobe Not tainted 6.12.0-rc1-syzkaller-00012-g5f153a692bac #0
Hardware name: riscv-virtio,qemu (DT)
epc : lock_acquire.part.0+0x36c/0x81c kernel/locking/lockdep.c:5790
 ra : lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
 ra : lock_acquire.part.0+0x2d6/0x81c kernel/locking/lockdep.c:5827
epc : ffffffff80249f5c ra : ffffffff80249ec6 sp : ff20000002f173d0
 gp : ffffffff897bea80 tp : ff6000001d163480 t0 : ff6000001d163fa0
 t1 : ff6000001d164018 t2 : 0000000000000006 s0 : ff20000002f17530
 s1 : ff6000006ec3a708 a0 : ffffffff90b60b08 a1 : ffffffff8643e8a0
 a2 : 0000000000000013 a3 : ffffffff898bbd80 a4 : 0000000000000000
 a5 : 0000000000000000 a6 : ffffffff8cfb54e0 a7 : 00000000523c038d
 s2 : ffffffff90b60b08 s3 : 0000000000000000 s4 : ffffffff87fcc100
 s5 : 1fe40000005e2e84 s6 : 0000000000000000 s7 : ffffffff809a103e
 s8 : 0000000000000000 s9 : ffffffff86258708 s10: ffffffff90b60b00
 s11: 0000000000000002 t3 : 1fec000003a2c7f3 t4 : 0000000000000008
 t5 : d802050544d9c568 t6 : 1fec000003a2c807
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff80249f5c>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff80249f5c>] lock_acquire.part.0+0x36c/0x81c kernel/locking/lockdep.c:5828
[<ffffffff8024a480>] lock_acquire+0x74/0x98 kernel/locking/lockdep.c:5798
[<ffffffff809a106e>] rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
[<ffffffff809a106e>] rcu_read_lock include/linux/rcupdate.h:849 [inline]
[<ffffffff809a106e>] __lruvec_stat_mod_folio+0xa4/0x22a mm/memcontrol.c:774
[<ffffffff80875008>] __folio_mod_stat mm/rmap.c:1293 [inline]
[<ffffffff80875008>] __folio_remove_rmap mm/rmap.c:1585 [inline]
[<ffffffff80875008>] folio_remove_rmap_ptes+0xda/0x250 mm/rmap.c:1612
[<ffffffff80818962>] zap_present_folio_ptes mm/memory.c:1520 [inline]
[<ffffffff80818962>] zap_present_ptes mm/memory.c:1579 [inline]
[<ffffffff80818962>] zap_pte_range mm/memory.c:1621 [inline]
[<ffffffff80818962>] zap_pmd_range mm/memory.c:1739 [inline]
[<ffffffff80818962>] zap_pud_range mm/memory.c:1768 [inline]
[<ffffffff80818962>] zap_p4d_range mm/memory.c:1789 [inline]
[<ffffffff80818962>] unmap_page_range+0x107c/0x2922 mm/memory.c:1810
[<ffffffff8081a322>] unmap_single_vma.constprop.0+0x11a/0x1f0 mm/memory.c:1856
[<ffffffff8081a5d8>] unmap_vmas+0x1e0/0x3fa mm/memory.c:1900
[<ffffffff8084bbb0>] exit_mmap+0x18c/0xbea mm/mmap.c:1864
[<ffffffff800b5f16>] __mmput kernel/fork.c:1347 [inline]
[<ffffffff800b5f16>] mmput+0x122/0x3e2 kernel/fork.c:1369
[<ffffffff800d8e02>] exit_mm kernel/exit.c:571 [inline]
[<ffffffff800d8e02>] do_exit+0x902/0x2986 kernel/exit.c:926
[<ffffffff800db3e6>] do_group_exit+0xd4/0x26c kernel/exit.c:1088
[<ffffffff800db5c8>] __do_sys_exit_group kernel/exit.c:1099 [inline]
[<ffffffff800db5c8>] __se_sys_exit_group kernel/exit.c:1097 [inline]
[<ffffffff800db5c8>] __riscv_sys_exit_group+0x4a/0x54 kernel/exit.c:1097
[<ffffffff8000f2d4>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85fd9c4a>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce