masayuki2009 commented on PR #8486:
URL: https://github.com/apache/nuttx/pull/8486#issuecomment-1425192882
@pussuw
We can reproduce the same issue if we add some configs like
```
--- a/boards/risc-v/qemu-rv/rv-virt/configs/nsh/defconfig
+++ b/boards/risc-v/qemu-rv/rv-virt/configs/nsh/defconfig
@@ -55,6 +55,8 @@ CONFIG_RAM_START=0x80000000
CONFIG_READLINE_CMD_HISTORY=y
CONFIG_RISCV_SEMIHOSTING_HOSTFS=y
CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_CHILD_STATUS=y
+CONFIG_SCHED_HAVE_PARENT=y
CONFIG_SCHED_WAITPID=y
CONFIG_SERIAL_UART_ARCH_MMIO=y
CONFIG_STACK_COLORATION=y
```
And run ostest
```
+ /home/ishikawa/opensource/QEMU/qemu-7.1/build/qemu-system-riscv32
-semihosting -nographic -cpu rv32 -smp 8 -M virt,aclint=on -bios none -kernel
nuttx
NuttShell (NSH) NuttX-12.0.0
nsh> ps
PID GROUP PRI POLICY TYPE NPX STATE EVENT SIGMASK STACK
USED FILLED COMMAND
0 0 0 FIFO Kthread N-- Ready 00000000 002016
000552 27.3% Idle Task
1 1 100 RR Task --- Running 00000000 001984
001228 61.8% nsh_main
nsh> help
help usage: help [-v] [<cmd>]
. cd dmesg free mkrd rm time
uptime
[ cp echo help mount rmdir true
usleep
? cmp env hexdump mv set truncate xd
basename dirname exec kill printf sleep uname
break dd exit ls ps source umount
cat df false mkdir pwd test unset
Builtin Apps:
ostest sh nsh
nsh> ostest
...
user_main: waitpid test
Test waitpid()
waitpid_start_child: Started waitpid_main at PID=5
waitpid_start_child: Started waitpid_main at PID=6
waitpid_start_child: Started waitpid_main at PID=7
waitpid_test: Waiting for PID=5 with waitpid()
waitpid_main: PID 5 Started
waitpid_main: PID 6 Started
waitpid_main: PID 7 Started
waitpid_main: PID 5 exitting with result=14
waitpid_main: PID 6 exitting with result=14
waitpid_main: PID 7 exitting with result=14
waitpid_test: ERROR: PID 5 return status is 0, expected 14
_assert: Current Version: NuttX 12.0.0 739688f6c6-dirty Feb 10 2023
14:23:10 risc-v
_assert: Assertion failed : at file: waitpid.c:220 task: ostest 0x80014988
up_dump_register: EPC: 80014552
up_dump_register: A0: 00000000 A1: 80028274 A2: 10000000 A3: 00000001
up_dump_register: A4: 0000000a A5: 00000000 A6: 80000000 A7: 00008000
up_dump_register: T0: 00000030 T1: 40000000 T2: 00000020 T3: 0000002a
up_dump_register: T4: 0000002e T5: 000001ff T6: 0000002d
up_dump_register: S0: 8002bb00 S1: 00000000 S2: 8001e1d4 S3: 800288f0
up_dump_register: S4: 80021c04 S5: 000000dc S6: 00000000 S7: 00000000
up_dump_register: S8: 00000000 S9: 00000000 S10: 00000000 S11: 00000000
up_dump_register: SP: 8002dda0 FP: 8002bb00 TP: 00000000 RA: 80010a48
```
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