lichee pi 4a 运行 ltp 测试失败

**【缺陷描述】：请补充详细的缺陷问题现象描述**

**一、缺陷信息**

环境信息
【OS版本】
```
openEuler release 24.03 (LTS-SP2)
NAME="openEuler"
VERSION="24.03 (LTS-SP2)"
ID="openEuler"
VERSION_ID="24.03"
PRETTY_NAME="openEuler 24.03 (LTS-SP2)"
ANSI_COLOR="0;31"
```
【内核版本】

```
[root@openeuler-riscv64 ~]# uname -a
Linux openeuler-riscv64 6.6.0-82.0.0.87.oe2403sp2.riscv64 #1 SMP PREEMPT Wed Apr 16 11:14:13 UTC 2025 riscv64 riscv64 riscv64 GNU/Linux
```

【硬件信息】

Sipeed Lichee Pi4a
th1520 16 + 128GB
在 sg2042 上能正常跑完，在荔枝派上稳定失败

```
[root@openeuler-riscv64 ~]# df -Th
Filesystem     Type      Size  Used Avail Use% Mounted on
/dev/root      ext4      111G  9.5G   97G   9% /
devtmpfs       devtmpfs  7.4G     0  7.4G   0% /dev
tmpfs          tmpfs     7.8G     0  7.8G   0% /dev/shm
tmpfs          tmpfs     3.1G  1.1M  3.1G   1% /run
tmpfs          tmpfs     4.0M     0  4.0M   0% /sys/fs/cgroup
/dev/mmcblk0p2 ext4      459M  290M  140M  68% /boot
tmpfs          tmpfs     7.8G     0  7.8G   0% /tmp
tmpfs          tmpfs     1.6G  4.0K  1.6G   1% /run/user/0
```

【实际结果】描述出问题的结果和影响

【问题复现步骤】
```
git clone https://gitcode.com/gh_mirrors/ltp/ltp.git
cd ltp
make autotools
./configure
make -j 4
make install
cd /opt/ltp
./runltp
```

编译 ltp 后运行 ./runltp 在运行到 ftest08 时必导致 kernel panic
runltp 进程的最后输出

```
<<<test_start>>>
tag=read_all_sys stime=1750224237
cmdline="read_all -d /sys -q -r 3"
contacts=""
analysis=exit
<<<test_output>>>
tst_test.c:142: TDEBUG: mmap((nil), 4096, PROT_READ | PROT_WRITE(3), 1, 3, 0)
tst_test.c:1980: TINFO: LTP version: 20250530-35-gbf9589d5b
tst_test.c:1983: TINFO: Tested kernel: 6.6.0-82.0.0.87.oe2403sp2.riscv64 #1 SMP PREEMPT Wed Apr 16 11:14:13 UTC 2025 riscv64
tst_kconfig.c:88: TINFO: Parsing kernel config '/proc/config.gz'
tst_test.c:1801: TINFO: Overall timeout per run is 0h 02m 10s
read_all.c:601: TINFO: Worker timeout set to 10% of runtime: 1000ms
read_all.c:477: TINFO: Worker 128270 (0): Stuck for 1000072us, restarting it
read_all.c:477: TINFO: Worker 128271 (1): Stuck for 1000272us, restarting it
read_all.c:413: TINFO: Worker 128270 (0): Last popped '/sys/kernel/tracing/events/bpf_trace/enable'
read_all.c:413: TINFO: Worker 128271 (1): Last popped '/sys/kernel/tracing/events/bpf_trace/enable'
read_all.c:477: TINFO: Worker 128272 (2): Stuck for 1003846us, restarting it
read_all.c:413: TINFO: Worker 128272 (2): Last popped '/sys/kernel/tracing/events/power/enable'
read_all.c:477: TINFO: Worker 128273 (0): Stuck for 1000111us, restarting it
read_all.c:413: TINFO: Worker 128273 (0): Last popped '/sys/kernel/slab/kmalloc-rcl-256/destroy_by_rcu'
read_all.c:477: TINFO: Worker 128275 (2): Stuck for 1002117us, restarting it
read_all.c:413: TINFO: Worker 128275 (2): Last popped '/sys/kernel/slab/:0000144/store_user'
read_all.c:477: TINFO: Worker 128274 (1): Stuck for 1019110us, restarting it
read_all.c:413: TINFO: Worker 128274 (1): Last popped '/sys/kernel/slab/kmalloc-96/trace'
read_all.c:477: TINFO: Worker 128276 (0): Stuck for 1405892us, restarting it
read_all.c:477: TINFO: Worker 128278 (1): Stuck for 1385853us, restarting it
read_all.c:477: TINFO: Worker 128277 (2): Stuck for 1397931us, restarting it
read_all.c:413: TINFO: Worker 128277 (2): Last popped '/sys/devices/platform/aon_subsys/aon_subsys:appcpu_dvddm/regulator/regulator.4/state'
read_all.c:413: TINFO: Worker 128276 (0): Last popped '/sys/devices/platform/aon_subsys/aon_subsys:appcpu_dvddm/regulator/regulator.4/microvolts'
read_all.c:413: TINFO: Worker 128278 (1): Last popped '/sys/devices/platform/aon_subsys/aon_subsys:appcpu_dvddm/regulator/regulator.4/state'
Read from remote host 192.168.5.13: Connection timed out
Connection to 192.168.5.13 closed.                                                            "openeuler-riscv64" 13:23 18-Jun-25
client_loop: send disconnect: Broken pipe
```

串口最后输出

```
[ 5131.321833][T118715] Hardware name: Sipeed Lichee Pi 4A 16G (DT)
[ 5131.327840][T118715] epc : regmap_read+0xe/0x4e
[ 5131.332382][T118715]  ra : th1520_i2s_show+0x68/0xaa
[ 5131.337355][T118715] epc : ffffffff8087bf06 ra : ffffffff80b50964 sp : ffffffc8009fbc60
[ 5131.345357][T118715]  gp : ffffffff8234af98 tp : ffffffd9ab401d00 t0 : ffffffff81e98350
[ 5131.353360][T118715]  t1 : ffffffff81091568 t2 : 0000000000000001 s0 : ffffffc8009fbc90
[ 5131.361363][T118715]  s1 : 0000000000000000 a0 : 0000000000000000 a1 : 0000000000000000
[ 5131.369364][T118715]  a2 : ffffffc8009fbc94 a3 : 0000000000000000 a4 : 0000000000000000
[ 5131.377367][T118715]  a5 : 0000000000000000 a6 : 0000000000000000 a7 : ffffffffffffffff
[ 5131.385369][T118715]  s2 : ffffffd90270d240 s3 : 0000000000000100 s4 : ffffffd94cb4f900
[ 5131.393373][T118715]  s5 : 0000000000001000 s6 : 0000000000000000 s7 : ffffffd94c0ec280
[ 5131.401373][T118715]  s8 : 0000000000400cc0 s9 : fffffffffffff000 s10: ffffffd94c0ec290
[ 5131.409376][T118715]  s11: 000000007ffff000 t3 : ffffffff8236b840 t4 : ffffffff8236b840
[ 5131.417379][T118715]  t5 : ffffffff8236b840 t6 : ffffffff8241b7ba
[ 5131.423471][T118715] status: 0000000200000120 badaddr: 0000000000000204 cause: 000000000000000d
[ 5131.432169][T118715] [<ffffffff8087bf06>] regmap_read+0xe/0x4e
[ 5131.438004][T118715] [<ffffffff80b50964>] th1520_i2s_show+0x68/0xaa
[ 5131.444275][T118715] [<ffffffff8085a110>] dev_attr_show+0x14/0x44
[ 5131.450374][T118715] [<ffffffff8033c5b0>] sysfs_kf_seq_show+0x6c/0xbc
[ 5131.456820][T118715] [<ffffffff8033b088>] kernfs_seq_show+0x18/0x20
[ 5131.463087][T118715] [<ffffffff802d56de>] seq_read_iter+0x142/0x302
[ 5131.469360][T118715] [<ffffffff8033bd22>] kernfs_fop_read_iter+0x2a/0x32
[ 5131.476063][T118715] [<ffffffff802acac2>] vfs_read+0x190/0x214
[ 5131.481904][T118715] [<ffffffff802ad5a2>] ksys_read+0x52/0xc2
[ 5131.487653][T118715] [<ffffffff802ad626>] __riscv_sys_read+0x14/0x1c
[ 5131.494010][T118715] [<ffffffff80f07076>] do_trap_ecall_u+0x72/0x14a
[ 5131.500376][T118715] [<ffffffff80f11e28>] ret_from_exception+0x0/0x64
[ 5131.506828][T118715] Code: bf89 556d b7b9 7179 f022 f406 ec26 e84a e44e 1800 (2783) 2045 
read_all.c:477: [ 5131.515362][T118715] ---[ end trace 0000000000000000 ]---
TINFO:  5131.517014][T118717] reg 0x1d = 0x0
0mWorker 118717 [ 5131.527555][T118715] th1520-event soc:th1520-event: set rebootmode:0x22
(1): Stuck for 1896188us, restar[ 5131.536670][T118717] reg 0x1e = 0x0
[ 5131.536728][T118715] Kernel panic - not syncing: Fatal exception
[ 5131.536735][T118715] SMP: stopping secondary CPUs
[ 5131.541161][T118715] [panic_cpufreq_notifier_call]Match the clock sw status to the hw after rst
[ 5131.560839][T118715] ---[ end Kernel panic - not syncing: Fatal exception ]---
```
ssh 和串口都断开了，只能重启.

openEuler/RISC-V

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