masayuki2009 commented on pull request #5761:
URL: https://github.com/apache/incubator-nuttx/pull/5761#issuecomment-1072400901


   @xiaoxiang781216 
   
   Hmm, ostest with lm3s6965-ek:qemu-protected crashed.
   
   ```
   $ ~/opensource/QEMU/qemu-5.2/build/arm-softmmu/qemu-system-arm -M 
lm3s6965evb -device loader,file=./nuttx.bin,addr=0x00000000 -device 
loader,file=./nuttx_user.bin,addr=0x00020000 -nographic
   ABCDEF
   stdio_test: write fd=1
   stdio_test: Standard I/O Check: printf
   stdio_test: write fd=2
   stdio_test: Standard I/O Check: fprintf to stderr
   ostest_main: Started user_main at PID=2
   
   ...
   
   End of test memory usage:
   VARIABLE  BEFORE   AFTER
   ======== ======== ========
   arena        7eb0     7eb0
   ordblks         1        1
   mxordblk     5b00     52e0
   uordblks     23b0     2bd0
   fordblks     5b00     52e0
   
   user_main: vfork() test
   up_assert: Assertion failed at file:armv7-m/arm_hardfault.c line: 173 task: 
ostest
   arm_registerdump: R0: 00000000 R1: 00000000 R2: 00000000  R3: deadbeef
   arm_registerdump: R4: 2000945c R5: 20004018 R6: 00026d05  FP: 00000000
   arm_registerdump: R8: 20008cb8 SB: 0002686c SL: 00000000 R11: 00000000
   arm_registerdump: IP: 00000000 SP: 20009e68 LR: 00000000  PC: 00006190
   arm_registerdump: xPSR: 00000200 PRIMASK: 00000000 CONTROL: 00000000
   arm_registerdump: EXC_RETURN: fffffff9
   arm_dump_stack: User Stack:
   arm_dump_stack: sp:     20009d78
   arm_dump_stack:   base: 200096a0
   arm_dump_stack:   size: 000007c8
   arm_stackdump: 20009d60: 00000000 200096a0 20009e68 20009d78 20000268 
000046eb 00000000 00000000
   arm_stackdump: 20009d80: 00006190 00000000 00006190 0000c5d6 00000003 
00000000 20008cb8 00003927
   arm_stackdump: 20009da0: 00000000 00000ea3 00000000 20000268 00000003 
00001313 00000000 00000b65
   arm_stackdump: 20009dc0: 2000945c 20004018 00026d05 000004f7 00006b40 
fffffffd 00020135 00000005
   arm_stackdump: 20009de0: 20008cb8 00000000 00000000 00000000 0002004d 
20008cb8 00001c11 00000000
   arm_stackdump: 20009e00: 00001c11 00000000 00000000 00000000 00000000 
deadbeef 20009e68 00000000
   arm_stackdump: 20009e20: 2000945c 20004018 00026d05 00000000 20008cb8 
0002686c 00000000 00000000
   arm_stackdump: 20009e40: fffffff9 00000000 00000000 00000000 deadbeef 
00000000 00000000 00006190
   arm_showtasks:    PID    PRI      USED     STACK   FILLED    COMMAND
   arm_dump_task:      0      0       328      1000    32.8%    Idle Task
   arm_dump_task:      1    100       600      2024    29.6%    ostest_main
   arm_dump_task:      2    100       912      1992    45.7%    ostest
   arm_dump_task:     68    100       560      1992    28.1%    ostest
   
   ```


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