INFO: task syz.1.961:12109 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00002-gcfb10de18538 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.961       state:D stack:0     pid:12109 tgid:12109 ppid:10151  flags:0x00000004
Call Trace:
[<ffffffff85fe3a64>] context_switch kernel/sched/core.c:5315 [inline]
[<ffffffff85fe3a64>] __schedule+0xd5a/0x3886 kernel/sched/core.c:6675
[<ffffffff85fe6654>] __schedule_loop kernel/sched/core.c:6752 [inline]
[<ffffffff85fe6654>] schedule+0xc4/0x324 kernel/sched/core.c:6767
[<ffffffff85ff9402>] schedule_timeout+0x1e2/0x296 kernel/time/timer.c:2591
[<ffffffff85fe8032>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff85fe8032>] __wait_for_common+0x1ca/0x4b6 kernel/sched/completion.c:116
[<ffffffff85fe8338>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff85fe8338>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff846d7502>] __vhost_worker_flush+0x204/0x274 drivers/vhost/vhost.c:288
[<ffffffff846d7626>] vhost_worker_flush drivers/vhost/vhost.c:295 [inline]
[<ffffffff846d7626>] vhost_dev_flush+0xb4/0x114 drivers/vhost/vhost.c:305
[<ffffffff846c810a>] vhost_vsock_flush drivers/vhost/vsock.c:697 [inline]
[<ffffffff846c810a>] vhost_vsock_dev_release+0x234/0x434 drivers/vhost/vsock.c:749
[<ffffffff80a2c748>] __fput+0x378/0x9e6 fs/file_table.c:431
[<ffffffff80a2ce5c>] ____fput+0x1c/0x26 fs/file_table.c:459
[<ffffffff8014fb6c>] task_work_run+0x16a/0x25e kernel/task_work.c:228
[<ffffffff85fdac58>] resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
[<ffffffff85fdac58>] exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
[<ffffffff85fdac58>] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
[<ffffffff85fdac58>] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
[<ffffffff85fdac58>] syscall_exit_to_user_mode+0x30a/0x31e kernel/entry/common.c:218
[<ffffffff85fd9b16>] do_trap_ecall_u+0x86/0x216 arch/riscv/kernel/traps.c:345
[<ffffffff85ffcab6>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff87fcc100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
2 locks held by getty/3148:
 #0: ff6000001c9e10a0 (&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 sshd/3177:
3 locks held by syz-executor/3179:
2 locks held by kworker/u9:6/11185:
 #0: ff60000011071148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff20000003147c90 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
1 lock held by syz-executor/12160:
2 locks held by syz.0.1042/12710:
2 locks held by kworker/u9:1/13097:
 #0: ff60000011071148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff6000006ec19648 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x23e/0x732 kernel/sched/psi.c:989
1 lock held by modprobe/13116:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00002-gcfb10de18538 #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a14>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff85f7c3bc>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff85fd796a>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff85fd796a>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff85fd79fa>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85f3fa9e>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85f3fd56>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff80019964>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432c2c>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432c2c>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432c2c>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154e04>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ffcbce>] 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: 12710 Comm: syz.0.1042 Not tainted 6.12.0-rc1-syzkaller-00002-gcfb10de18538 #0
Hardware name: riscv-virtio,qemu (DT)
epc : get_random_u32+0x41e/0x7ac drivers/char/random.c:553
 ra : arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
 ra : get_random_u32+0x41a/0x7ac drivers/char/random.c:553
epc : ffffffff81be260e ra : ffffffff81be260a sp : ff200000000178d0
 gp : ffffffff897bea80 tp : ff60000015af1a40 t0 : ff60000015af2560
 t1 : ff60000015af25b0 t2 : 0000000000000024 s0 : ff200000000179d0
 s1 : 0000000000000000 a0 : 0000000000000007 a1 : 0000000000000000
 a2 : 0000000000f00000 a3 : ffffffff81be260a a4 : 0000000000000000
 a5 : ff60000015af1a40 a6 : 0000000000f00000 a7 : 1fec000002b5e4b5
 s2 : 000000000000000e s3 : ffffffff90b60b08 s4 : 0000000000000002
 s5 : ffffffff898bca80 s6 : ff6000006ec4b688 s7 : ff20000000017960
 s8 : 1fec00000dd896d8 s9 : 000000000000000f s10: 1fe4000000002f20
 s11: ff6000006ec4b660 t3 : 1fec000002b5e4ab t4 : 0000000000000007
 t5 : 29e67cbb6fc956d4 t6 : 1fec000002b5e4ba
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff81be260e>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff81be260e>] get_random_u32+0x41e/0x7ac drivers/char/random.c:553
[<ffffffff81be29ba>] __get_random_u32_below+0x1e/0xce drivers/char/random.c:567
[<ffffffff84ed9cda>] get_random_u32_below include/linux/random.h:63 [inline]
[<ffffffff84ed9cda>] garp_join_timer_arm+0x32/0x82 net/802/garp.c:411
[<ffffffff84edc04e>] garp_join_timer+0xe0/0xfa net/802/garp.c:425
[<ffffffff80335216>] call_timer_fn+0x1d2/0x874 kernel/time/timer.c:1794
[<ffffffff80336a1a>] expire_timers kernel/time/timer.c:1845 [inline]
[<ffffffff80336a1a>] __run_timers+0x646/0x820 kernel/time/timer.c:2419
[<ffffffff80336d1e>] __run_timer_base kernel/time/timer.c:2430 [inline]
[<ffffffff80336d1e>] __run_timer_base kernel/time/timer.c:2423 [inline]
[<ffffffff80336d1e>] run_timer_base+0x12a/0x1a6 kernel/time/timer.c:2439
[<ffffffff80336db2>] run_timer_softirq+0x18/0x42 kernel/time/timer.c:2449
[<ffffffff800e0faa>] handle_softirqs+0x4a6/0x10de kernel/softirq.c:554
[<ffffffff800e1eae>] __do_softirq kernel/softirq.c:588 [inline]
[<ffffffff800e1eae>] invoke_softirq kernel/softirq.c:428 [inline]
[<ffffffff800e1eae>] __irq_exit_rcu+0x188/0x372 kernel/softirq.c:637
[<ffffffff800e2adc>] irq_exit_rcu+0x10/0xf8 kernel/softirq.c:649
[<ffffffff85fd94e4>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:378
[<ffffffff85ffcc0a>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:355