INFO: task syz.0.953:6314 blocked for more than 426 seconds.
      Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.953       state:D stack:0     pid:6314  tgid:6311  ppid:3208   task_flags:0x40044c flags:0x00000008
Call Trace:
[<ffffffff863ce5c0>] context_switch kernel/sched/core.c:5357 [inline]
[<ffffffff863ce5c0>] __schedule+0x1042/0x4106 kernel/sched/core.c:6961
[<ffffffff863d1748>] __schedule_loop kernel/sched/core.c:7043 [inline]
[<ffffffff863d1748>] schedule+0xc4/0x35e kernel/sched/core.c:7058
[<ffffffff863d20cc>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:7115
[<ffffffff863dd4c4>] rwsem_down_read_slowpath+0x58a/0x9f2 kernel/locking/rwsem.c:1086
[<ffffffff863dda10>] __down_read_common kernel/locking/rwsem.c:1261 [inline]
[<ffffffff863dda10>] __down_read kernel/locking/rwsem.c:1274 [inline]
[<ffffffff863dda10>] down_read+0xe4/0x45e kernel/locking/rwsem.c:1539
[<ffffffff8015ee8e>] mmap_read_lock include/linux/mmap_lock.h:453 [inline]
[<ffffffff8015ee8e>] exit_mm kernel/exit.c:558 [inline]
[<ffffffff8015ee8e>] do_exit+0x6c2/0x28e0 kernel/exit.c:949
[<ffffffff8016160c>] do_group_exit+0xd4/0x26c kernel/exit.c:1102
[<ffffffff8019a262>] get_signal+0x207c/0x22fc kernel/signal.c:3034
[<ffffffff80071104>] arch_do_signal_or_restart+0x776/0x25d6 arch/riscv/kernel/signal.c:431
[<ffffffff803c22fe>] exit_to_user_mode_loop+0x90/0x134 kernel/entry/common.c:40
[<ffffffff863c3cd0>] exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
[<ffffffff863c3cd0>] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
[<ffffffff863c3cd0>] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
[<ffffffff863c3cd0>] do_trap_ecall_u+0x3f0/0x530 arch/riscv/kernel/traps.c:357
[<ffffffff863ed596>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:197

Showing all locks held in the system:
1 lock held by kthreadd/2:
1 lock held by khungtaskd/36:
 #0: ffffffff883dd9a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2a/0x1a0 kernel/locking/lockdep.c:6771
4 locks held by kworker/u9:4/1083:
 #0: ffffaf8013e85948 ((wq_completion)wg-kex-wg2#3){+.+.}-{0:0}, at: process_one_work+0x848/0x1f32 kernel/workqueue.c:3211