日志：
[ 783.185269] systemd-shutdow: 57 output lines suppressed due to ratelimiting
[ 783.239380] systemd-shutdown[1]: Syncing filesystems and block devices.
[ 783.843634] systemd-shutdown[1]: Sending SIGTERM to remaining processes...
[ 783.855269] systemd-journald[192]: Received SIGTERM from PID 1 (systemd-shutdow).
[ 783.910992] systemd-shutdown[1]: Sending SIGKILL to remaining processes...
[ 783.925740] systemd-shutdown[1]: Unmounting file systems.
[ 783.930347] [843]: Remounting '/' read-only in with options '(null)'.
[ 783.954168] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null)
[ 783.966880] systemd-shutdown[1]: All filesystems unmounted.
[ 783.967104] systemd-shutdown[1]: Deactivating swaps.
[ 783.967455] systemd-shutdown[1]: All swaps deactivated.
[ 783.967578] systemd-shutdown[1]: Detaching loop devices.
[ 783.971284] systemd-shutdown[1]: All loop devices detached.
[ 783.971461] systemd-shutdown[1]: Detaching DM devices.
[ 783.986377] cpu cpu0: min=816000, max=816000
[ 784.022095] rockchip-vop2 fe040000.vop: [drm:vop2_crtc_atomic_disable] Crtc atomic disable vp0
[ 784.200401] rkisp_hw fdff0000.rkisp: rkisp_hw_shutdown
[ 784.209065] fan53555-regulator 0-001c: fan53555..... reset
[ 784.210700] fan53555-regulator 0-001c: reset: force fan53555_reset ok!
[ 784.212029] mpp_rkvdec2 fdf80200.rkvdec: shutdown device
[ 784.212716] mpp_jpgdec fded0000.jpegd: shutdown device
[ 784.213374] mpp-iep2 fdef0000.iep: shutdown device
[ 784.213985] mpp_vepu2 fdee0000.vepu: shutdown device
[ 784.214620] mpp_vdpu2 fdea0400.vdpu: shutdown device
[ 784.215404] mpp_rkvenc fdf40000.rkvenc: shutdown device
[ 784.216071] mpp_rkvenc fdf40000.rkvenc: shutdown success
[ 844.872058] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
[ 844.872828] rcu: 1-...0: (1 GPs behind) idle=c5e/1/0x4000000000000000 softirq=8649/8653 fqs=255
[ 844.873866] rcu: (detected by 3, t=18030 jiffies, g=19193, q=90)
[ 844.874588] Task dump for CPU 1:
[ 844.874984] systemd-shutdow R running task 0 1 0 0x0000000a
[ 844.875813] Call trace:
[ 844.876134] __switch_to+0xc4/0x128
[ 844.876569] pm_generic_runtime_suspend+0x3c/0x50
[ 844.877137] genpd_runtime_suspend+0xcc/0x220
[ 844.877662] pm_runtime_force_suspend+0x50/0xb4
[ 844.878203] rk_iommu_shutdown+0x50/0x70
[ 844.878680] platform_drv_shutdown+0x30/0x3c
[ 844.879189] device_shutdown+0x158/0x1c0
[ 844.879667] kernel_power_off+0x40/0x78
[ 844.880130] __se_sys_reboot+0x1b0/0x204
[ 844.880605] __arm64_sys_reboot+0x28/0x34
[ 844.881086] el0_svc_common.constprop.0+0xf0/0x170
[ 844.881655] el0_svc_handler+0x74/0x90
[ 844.882103] el0_svc+0x8/0xc
可以看到784.216071到844.872058有一分钟，导致重启比较慢