qemu 跑 risc-v时遇到的诡异错误

# [ 242.707630] INFO: task swapper/0:1 blocked for more than 120 seconds.
[ 242.709838] Not tainted 6.11.0-rc6 #3
[ 242.711295] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 242.713996] task:swapper/0 state:D stack:0 pid:1 tgid:1 ppid:0 flags:0x00000002
[ 242.717435] Call Trace:
[ 242.718509] [<ffffffff80988c1e>] __schedule+0x34e/0x90a
[ 242.720586] [<ffffffff809891fc>] schedule+0x22/0x114
[ 242.722020] [<ffffffff8098e628>] schedule_timeout+0xbe/0xf6
[ 242.723955] [<ffffffff80989a3a>] __wait_for_common+0xd6/0x1ea
[ 242.726368] [<ffffffff80989c30>] wait_for_completion_state+0x1a/0x32
[ 242.728330] [<ffffffff80029ca8>] call_usermodehelper_exec+0x158/0x190
[ 242.730148] [<ffffffff80a02566>] initrd_load+0x162/0x2b8
[ 242.731812] [<ffffffff80a01af6>] prepare_namespace+0x14e/0x256
[ 242.733499] [<ffffffff80a01132>] kernel_init_freeable+0x27c/0x29e
[ 242.735801] [<ffffffff8098708e>] kernel_init+0x20/0x112
[ 242.737404] [<ffffffff8098f856>] ret_from_fork+0xe/0x1c