[BUG] Regression: cxxtest crash #14002

leducp · 2024-10-09T13:24:51Z

Description / Steps to reproduce the issue

I tried cxxtest on stm32f411e-disco and xmc4800-relax with the C++ toolchain enabled:

NuttShell (NSH) NuttX-12.7.0-RC0
nsh> cxxtest
prindump_assert_info: Current Version: NuttX 12.7.0-RC0 8fe6c0e Oct 9 2024 15:14:13 arm
dump_assert_info: Assertion failed panic: at file: :0 task: process: 0x800e905
up_dump_register: R0: 00000000 R1: 20005f20 R2: 00000005 R3: 00000100
up_dump_register: R4: 20000000 R5: 20005f20 R6: 00000000 FP: 00000000
up_dump_register: R8: 00000000 SB: 00000000 SL: 00000000 R11: 00000000
up_dump_register: IP: 20003f94 SP: 20005e80 LR: 0802c055 PC: 00000100
up_dump_register: xPSR: 60000000 PRIMASK: 00000000 CONTROL: 00000000
up_dump_register: EXC_RETURN: fffffffd
dump_stackinfo: User Stack:
dump_stackinfo: base: 0x200058d8
dump_stackinfo: size: 00002016
dump_stackinfo: sp: 0x20005e80
stack_dump: 0x20005e60: 00000000 20005f20 00000005 00000100 20003f94 0802c055 00000100 60000000
stack_dump: 0x20005e80: 20005ea8 20005f20 0805a570 0802c083 0805a618 20005ea8 0805a618 0802bbb1
stack_dump: 0x20005ea0: 0805a55c 0800e58d 0805a55c 0805add0 00000000 00000000 00000000 00000000
stack_dump: 0x20005ec0: 00000000 00000000 20003830 00000000 00000000 00000001 00000000 00000000
stack_dump: 0x20005ee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000400 00000000
stack_dump: 0x20005f00: 00000000 00000000 20001f00 20003434 00000000 00000000 00000000 00000000
stack_dump: 0x20005f20: 0805a64c 00000006 00000000 00001002 00000000 00000005 20000000 20000048
stack_dump: 0x20005f40: 00000028 08003e7b 00000000 20000000 0805a5a8 00000006 00000000 00001002
stack_dump: 0x20005f60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
stack_dump: 0x20005f80: 00000000 00000000 00000000 20003830 00000000 00000000 00000000 20003468
stack_dump: 0x20005fa0: 20003440 20003448 00000000 00000000 00000000 00000008 20005f74 20003830
stack_dump: 0x20005fc0: 00000000 20000000 20005eac 20003468 20003440 20003448 0800e905 00000001
stack_dump: 0x20005fe0: 200058c8 0800e90d 20006120 08002651 20006133 08001f5d 20006048 00000001
stack_dump: 0x20006000: 200061dc 200054b8 00000001 20000e4c 00000000 00000000 00000000 00000000
stack_dump: 0x20006020: 00000000 fffffffd 00000002 20005554 20001f68 20000d34 00000003 0800c0e1
stack_dump: 0x20006040: 0800c0f4 01000000 ffffff80 00000003 200061c4 00000003 00000001 0800c02f
stack_dump: 0x20006060: 00000000 00000003 200060b8 00000000 00000000 00000000 00000000 00000000
stack_dump: 0x20006080: 00000000 00000000 00000000 0800e905 00000001 200058c8 00000000 08003f97
stack_dump: 0x200060a0: 0800e905 08001fbd 00000000 00000000 00000000 00000000 00000000 00000000
dump_tasks: PID GROUP PRI POLICY TYPE NPX STATE EVENT SIGMASK STACKBASE STACKSIZE COMMAND
dump_tasks: ---- --- --- -------- ------- --- ------- ---------- ---------------- 0x20000530 2048 irq
dump_task: 0 0 0 FIFO Kthread - Ready 0000000000000000 0x20003ac0 1008
dump_task: 1 1 100 RR Task - Waiting Semaphore 0000000000000000 0x20004590 2008
dump_task: 2 2 100 RR Task - Running 0000000000000000 0x200058d8 2016

I do not know how to investigate further.

On which OS does this issue occur?

[OS: Linux]

What is the version of your OS?

Debian testing

NuttX Version

master

Issue Architecture

[Arch: arm]

Issue Area

[Area: Applications]

Verification

I have verified before submitting the report.

The text was updated successfully, but these errors were encountered:

xiaoxiang781216 · 2024-10-09T18:27:19Z

does libcxx generate the similar panic?

leducp · 2024-10-10T08:27:25Z

I'll try this. In the mid time, I tried the same configuration on 12.6.0 and same result so I wonder if it even work one day.

leducp · 2024-10-10T09:17:44Z

OK this is better but it still crash:

nsh> cxxtest
task_spawn: name=cxxtest entry=0xc0481a9 file_actions=0x200141d0 attr=0x200141d4 argv=0x200142cc
spawn_execattrs: Setting policy=2 priority=100 for pid=2
nxtask_activate: cxxtest pid=2,TCB=0x20014758
Test ofstream ================================
printf: Starting test_ostream
printf: Successfully opened /dev/console
cout: Successfully opened /dev/console
Writing this to /dev/console
Test iostream ================================
Hello, this is only a test
Print an int: 190
Print a char: d
Test std::vector =============================
v1=1 2 3
Hello World Good Luck 
Test std::map ================================
Test C++17 features ==========================
pthread_mutex_timedlock: mutex=0x200001a0
pthread_mutex_timedlock: Returning 0
dump_assert_info: Current Version: NuttX  12.7.0-RC0 1c2856dfcb-dirty Oct 10 2024 11:13:46 arm
dump_assert_info: Assertion failed panic: at file: :0 task: `2 �2 `2 �2 `2 �2 �2 7 �2 �2 7 �2 �2 �2 �2 �2 Ձ
                                                                                                           `( process: Kernel 0xc0481a9
up_dump_register: R0: 20014758 R1: 20016d68 R2: 00000005  R3: 4870e2bb
up_dump_register: R4: 200169e4 R5: 200029ec R6: 0c0e2278  FP: 2000299c
up_dump_register: R8: 00000020 SB: 00000000 SL: 00000000 R11: 00000000
up_dump_register: IP: a0000000 SP: 20016200 LR: 0c017bc9  PC: 0c006144
up_dump_register: xPSR: 21000000 PRIMASK: 00000001 CONTROL: 00000000
up_dump_register: EXC_RETURN: ffffffed
dump_stackinfo: User Stack:
dump_stackinfo:   base: 0x20014bb8
dump_stackinfo:   size: 00008144
dump_stackinfo:     sp: 0x20016200
stack_dump: 0x200161e0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 20001558
stack_dump: 0x20016200: 20016d68 20014758 00000000 20014758 00640000 4870e2bb 200162a8 20016d64
stack_dump: 0x20016220: 200001a8 200162a0 0c0e58d0 00000000 20014758 0c008b1b 20016254 0c008b7d
stack_dump: 0x20016240: 200169e4 20016d64 a0000000 20016d64 0c008b6e 0c008d2d 20014b88 20016d64
stack_dump: 0x20016260: 00000000 00000000 00000000 0c00aba1 00000000 20016d60 00004c08 0c04eea5
stack_dump: 0x20016280: 20016d60 0000000b 00000001 0c0e5030 00000000 00000002 00000000 0c0d88c1
stack_dump: 0x200162a0: 0c0daccd 20003334 00000000 0c0dad41 0c0e5278 20016274 00004c08 00000001
stack_dump: 0x200162c0: 0c0daccd 20003334 00000001 0c0db945 0c0dad15 2000019c 0c0e2278 0c0dadd5
stack_dump: 0x200162e0: 0000000e 00000000 0c0dad15 2000019c 2000429c 0c0d9ce9 00000001 00000000
stack_dump: 0x20016300: 20002bb0 0c0daac7 00002000 0c0daab1 00002000 0c050f01 2000429c 20016410
stack_dump: 0x20016320: 00000001 0c0e2278 20003270 0000000e 00000002 0c0534f9 00000002 2000299c
stack_dump: 0x20016340: 2000299c 2000299c 2000299c 2000299c 200169e4 0c04a70f 0c0e2286 20014aa4
stack_dump: 0x20016360: 200169d4 200169d0 20012cd4 20012ccc 20016b90 20016ba0 00000004 20016ba0
stack_dump: 0x20016380: 20016ba0 20016b90 20016ba0 20016b90 20016b90 20016ba0 200132c0 20016b90
stack_dump: 0x200163a0: 20016b90 20016b90 20016ba0 ffffffff 20012c18 ffffffff ffffffff ffffffff
stack_dump: 0x200163c0: 00000001 20012cdc 20012cdc 20012cb4 200132c0 200132c0 20016ba4 20016b90
stack_dump: 0x200163e0: 20016b94 200132c0 200132c0 200132b8 20016b94 20016b94 20016b94 20016b90
stack_dump: 0x20016400: 200132b8 200132c0 200132c0 200029ec 20013201 20002998 20013200 20013200
stack_dump: 0x20016420: 20016b90 200132b8 200132c0 200132c0 200132b8 200132b8 20016b90 200132b8
stack_dump: 0x20016440: 20016b90 200132b8 200132b8 200132b8 200132c8 20016ba4 00000004 20016ba4
stack_dump: 0x20016460: 20016ba4 200132c8 20016ba4 200132c8 200029ec 200029ec 20003268 200132c8
stack_dump: 0x20016480: 20016ba4 20012d04 20012d04 20012cf8 00000008 00000000 00000000 2000299c
stack_dump: 0x200164a0: 0000000e 0c0e2278 200029ec 200132c0 00000002 200132c0 00000002 200132c0
stack_dump: 0x200164c0: 20012d08 20012d04 20012cf8 200132c0 200132c0 20012d08 200132c0 200133bc
stack_dump: 0x200164e0: 200133bc 20012d04 200133bc 200132c0 20012d04 200132c0 00000001 00000002
stack_dump: 0x20016500: 200132b8 20012bf0 200133b8 20012bf0 200133b8 00000001 200132c0 0000000e
stack_dump: 0x20016520: 00000000 2000299c 0000000e 20adbeef 2000299c 0c0e2286 0c0e2278 0c0e2278
stack_dump: 0x20016540: 200133b4 20003130 200133b0 2000299c ffffffff ffffffff 2000299c 2000299c
stack_dump: 0x20016560: 2000299c 2000299c 20002998 0000000e 0c0e2278 20002998 200132c8 0c0e2278
stack_dump: 0x20016580: 0c0e2278 0c0e2278 deadbeef deadbeef 200028b4 deadbe01 20002860 200028b4
stack_dump: 0x200165a0: 200028b4 deadbeef deadbeef deadbeef 200028b4 200028b4 deadbeef deadbeef
stack_dump: 0x200165c0: deadbeef 200028b4 200028b4 deadbeef deadbeef deadbeef 200132c0 200132c0
stack_dump: 0x200165e0: 200132b8 deadbeef deadbeef 200028b4 200028b4 deadbeef deadbeef deadbeef
stack_dump: 0x20016600: deadbeef deadbeef deadbeef deadbeef 00000000 00000000 20002864 0000002e
stack_dump: 0x20016620: 0c0e2074 200028b4 deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
stack_dump: 0x20016640: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
stack_dump: 0x20016660: deadbeef deadbeef deadbeef deadbeef deadbeef 00000000 20012bc8 00000000
stack_dump: 0x20016680: 20012bc8 20012bc8 20016b94 20016b94 20016b94 20016b90 200132b8 20016b90
stack_dump: 0x200166a0: 200132b8 200132c0 200132c0 200132b8 200132b8 20016b90 200132b8 200132c0
stack_dump: 0x200166c0: 200132c0 200132b8 200132b8 20016b90 200132b8 20016b90 200132b8 00000001
stack_dump: 0x200166e0: 200132b8 200132b8 20012bd4 200132c0 200167c8 00000001 0c059db7 0c0e216c
stack_dump: 0x20016700: 20002864 0c0e219a 00000000 00000000 00000000 00000000 00000000 ffffffed
stack_dump: 0x20016720: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
stack_dump: 0x20016740: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
stack_dump: 0x20016760: 00000002 200147f4 20003c68 200147f4 a0000000 0c017bc9 0c017bf8 01000000
stack_dump: 0x20016780: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 0000e800
stack_dump: 0x200167a0: 00000040 20000000 00010001 0000e802 00010000 40030040 00000000 20000000
stack_dump: 0x200167c0: 00000114 20000000 00000040 2000004c 10001108 00000000 00010000 0c0086b1
stack_dump: 0x200167e0: 00010001 20000014 00000000 00000001 00000001 00000000 0100000a 0c008c29
stack_dump: 0x20016800: 00000000 2000004c 00000000 00000000 00000000 0c007e99 200168a7 00000000
stack_dump: 0x20016820: 20004283 20014aa4 00000000 00000000 01000000 20000014 20003f68 0a008c29
stack_dump: 0x20016840: 00000000 0000002f 00000001 0c015a9d 20016880 20014aa4 00000000 2000421c
stack_dump: 0x20016860: 0000002f 00000000 200132b8 0c015ae7 00000001 0000002f 00004254 00000001
stack_dump: 0x20016880: 00000001 00000000 00000000 0c008c29 0c059db7 2000421c 20004254 00000000
stack_dump: 0x200168a0: 20016918 0c008db5 00000000 2000421c 0c00a6e8 00000000 20004218 0c00abb9
stack_dump: 0x200168c0: 0000002f 20004218 00000000 0c00ab87 00000000 20004218 00000000 00000000
stack_dump: 0x200168e0: 20004218 0c00a9c7 00000001 20004218 20016920 00000000 200028e4 0c0534b9
stack_dump: 0x20016900: 20016914 2001694c ffffffff 200028b4 0c0e219a 20016958 00003300 20004218
stack_dump: 0x20016920: 20016920 20016918 200028e4 20003148 00000000 20002864 20002864 20002864
stack_dump: 0x20016940: 20002864 20002864 200028b4 0c050dc5 20002860 20002860 20003201 20002860
stack_dump: 0x20016960: 00000002 20002864 20002864 20002860 20002864 20002864 20002864 20002864
stack_dump: 0x20016980: 0000000a 0c048253 200132c0 20002860 20002860 20016418 200169e4 0c0e21d8
stack_dump: 0x200169a0: 20002864 0c0e219a 00000000 0c0465f9 200132c4 200132b8 200132c4 0000000e
stack_dump: 0x200169c0: 00000000 200028b4 00000001 20002860 20002864 0c0e219c 0000000d 0c0e21ac
stack_dump: 0x200169e0: 00000008 0c0e21b8 0000000d deadbeef 200028b4 200028b4 20002864 20002864
stack_dump: 0x20016a00: 20002864 200169d4 200169d4 200169d4 200169d4 200169ec 200169d4 0c0481d5
stack_dump: 0x20016a20: 20002860 0c0e20d0 0c0e1f30 200028b4 deadbeef 00000000 00000000 20002864
stack_dump: 0x20016a40: 0000002e 0c0e216c 200028b4 200028b4 deadbeef deadbeef deadbeef deadbeef
stack_dump: 0x20016a60: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
stack_dump: 0x20016a80: deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef deadbeef
stack_dump: 0x20016aa0: 0000002e 00000000 20002864 0000002e 20016b88 20002864 0c0e1f5e 0000002e
stack_dump: 0x20016ac0: 00000000 20002864 0000002e 20000001 20002864 0c0e219a 0c0e216c 0c0e216c
stack_dump: 0x20016ae0: 2001651b 20002864 20002864 20002860 00000020 ffffffff 20002864 20002864
stack_dump: 0x20016b00: 20002864 20002864 20002860 0000002e 0c0e216c 20002860 20002860 0c0e216c
stack_dump: 0x20016b20: 0c0e216c 0c0e216c 00000000 00000000 00000000 00000000 00000000 0c0481c1
stack_dump: 0x20016b40: 20014ba8 00000001 00000000 0c008f37 00000000 20014ba8 00000001 0c0481a9
stack_dump: 0x20016b60: 00000000 0c0051f5 00000000 20014ba8 00000000 20014758 00000001 00000001
stack_dump: 0x20016b80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dump_tasks:    PID GROUP PRI POLICY   TYPE    NPX STATE   EVENT      SIGMASK          STACKBASE  STACKSIZE      USED   FILLED    COMMAND
dump_tasks:   ----   --- --- -------- ------- --- ------- ---------- ---------------- 0x200004d8      4096      1192    29.1%    irq
dump_task:       0     0   0 FIFO     Kthread -   Running            0000000000000000 0x20003588      2016       936    46.4%    Idle_Task
dump_task:       1     1 100 RR       Task    -   Waiting Semaphore  0000000000000000 0x20004488     65472      7668    11.7%    nsh_main

Note: I had to increase drastically the default stack value to have something working, so maybe it is also the problem for the C++ toolchain version. I'll give it a try

leducp · 2024-10-10T09:38:41Z

OK! I have something working! When using the C++ toolchain, one have to initialize std::cout or you will crash the application.
Something like that do the trick:

  std::ofstream ttyOut;
  ttyOut.open ("/dev/console");
  std::cout.rdbuf(ttyOut.rdbuf());

One probably need to to it also to std::cerr and std::clog. I can do a patch to initialize properly this part of the C++ library in NuttX bootup but I don't knwo where I can put it. Any clue?

In summary:

C++ toolchain library crash because std::cout is not initialized, if init cxx work perfectly
C++ libcxx crash while testing the C++17 features (regression?)

xiaoxiang781216 · 2024-10-10T10:35:16Z

do you have the similar snippet in your ld script:

    .init_section : {
        _sinit = ABSOLUTE(.);
        KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
        KEEP(*(.init_array EXCLUDE_FILE(*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o) .ctors))
        _einit = ABSOLUTE(.);
    } > flash

leducp · 2024-10-10T12:06:51Z

I didn't have this snippet but this one:

    .init_section :
    {
        _sinit = ABSOLUTE(.);
        KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
        KEEP(*(.init_array .ctors))
        _einit = ABSOLUTE(.);
    } > flash

I tried yours but it is worse libcxx with no impact on libstdc++?

libcxx:

nsh> cxxtest
task_spawn: name=cxxtest entry=0xc0481a9 file_actions=0x200141d0 attr=0x200141d4 argv=0x200142cc
spawn_execattrs: Setting policy=2 priority=100 for pid=2
nxtask_activate: cxxtest pid=2,TCB=0x20014758
Test ofstream ================================
printf: Starting test_ostream
printf: Successfully opened /dev/console
cout: Succe

libstdc++ (with cout patch, without it crash immediatly): no impact (working)

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[BUG] Regression: cxxtest crash #14002

[BUG] Regression: cxxtest crash #14002

leducp commented Oct 9, 2024 •

edited

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xiaoxiang781216 commented Oct 9, 2024

leducp commented Oct 10, 2024

leducp commented Oct 10, 2024

leducp commented Oct 10, 2024

xiaoxiang781216 commented Oct 10, 2024

leducp commented Oct 10, 2024

[BUG] Regression: cxxtest crash #14002

[BUG] Regression: cxxtest crash #14002

Comments

leducp commented Oct 9, 2024 • edited Loading

Description / Steps to reproduce the issue

On which OS does this issue occur?

What is the version of your OS?

NuttX Version

Issue Architecture

Issue Area

Verification

xiaoxiang781216 commented Oct 9, 2024

leducp commented Oct 10, 2024

leducp commented Oct 10, 2024

leducp commented Oct 10, 2024

xiaoxiang781216 commented Oct 10, 2024

leducp commented Oct 10, 2024

leducp commented Oct 9, 2024 •

edited

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