------------[ cut here ]------------
WARNING: [ret < 0] kernel/rcu/tasks.h:1530 at rcu_tasks_verify_self_tests kernel/rcu/tasks.h:1520 [inline], CPU#0: swapper/0/1
WARNING: [ret < 0] kernel/rcu/tasks.h:1530 at rcu_tasks_verify_work_fn+0x27e/0x31c kernel/rcu/tasks.h:1542, CPU#0: swapper/0/1
Modules linked in:
CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
epc : rcu_tasks_verify_self_tests kernel/rcu/tasks.h:1530 [inline]
epc : rcu_tasks_verify_work_fn+0x27e/0x31c kernel/rcu/tasks.h:1542
 ra : rcu_tasks_verify_self_tests kernel/rcu/tasks.h:1522 [inline]
 ra : rcu_tasks_verify_work_fn+0x250/0x31c kernel/rcu/tasks.h:1542
epc : ffffffff8036ee1e ra : ffffffff8036edf0 sp : ffff8f8000027b10
 gp : ffffffff8a229d40 tp : ffffaf8012afcf80 t0 : 1ffffffff22c0084
 t1 : ffffffff8007a85c t2 : ffffffff91600420 s0 : ffff8f8000027bb0
 s1 : 0000000000000bb8 a0 : ffffffff887f4a40 a1 : 0000000000000000
 a2 : 0000000000000002 a3 : ffffffff803213b0 a4 : 1ffffffff10fe948
 a5 : 0000000000000000 a6 : 0000000000000003 a7 : 0000000041b58ab3
 s2 : 1ffff1f000004f64 s3 : ffff8f8000027b60 s4 : ffff8f8000027ca0
 s5 : ffffffff88614240 s6 : ffffffff887f5060 s7 : 0000000000000000
 s8 : 1ffffffff1467758 s9 : 0000000000000000 s10: ffffffff8a33bac0
 s11: ffffffff881b2cf0 t3 : ffffffff87fb27e0 t4 : fffff5ef0e58ff11
 t5 : fffff5ef0e58ff12 t6 : ffffffff86878840 ssp : 0000000000000000
status: 0000000200000120 badaddr: ffffffff8036ee1e cause: 0000000000000003
[<ffffffff8036ee1e>] rcu_tasks_verify_self_tests kernel/rcu/tasks.h:1520 [inline]
[<ffffffff8036ee1e>] rcu_tasks_verify_work_fn+0x27e/0x31c kernel/rcu/tasks.h:1542
[<ffffffff8036ef58>] rcu_tasks_verify_schedule_work+0x9c/0xa8 kernel/rcu/tasks.h:1554
[<ffffffff80063e4c>] do_one_initcall+0x18c/0xcdc init/main.c:1382
[<ffffffff86602d5a>] do_initcall_level init/main.c:1444 [inline]
[<ffffffff86602d5a>] do_initcalls init/main.c:1460 [inline]
[<ffffffff86602d5a>] do_basic_setup init/main.c:1479 [inline]
[<ffffffff86602d5a>] kernel_init_freeable+0x6ca/0x7b0 init/main.c:1692
[<ffffffff86433d40>] kernel_init+0x28/0x240 init/main.c:1582
[<ffffffff80069138>] ret_from_fork_kernel+0x94/0xef8 arch/riscv/kernel/process.c:228
[<ffffffff86459d52>] ret_from_fork_kernel_asm+0x16/0x18 arch/riscv/kernel/entry.S:363