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mimalloc: warning: unable to directly request hinted aligned OS memory #112027

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mimalloc: warning: unable to directly request hinted aligned OS memory#112027
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testsTests in the Lib/test dirtopic-free-threadingtype-bugAn unexpected behavior, bug, or error

Description

@furkanonder
furkanonder
opened on Nov 13, 2023

Bug report

Bug description:

Configuration:

./configure --disable-gil --with-pydebug

Test Output:

dietpi@DietPi:~/cpython$ ./python -m test test_cmd_line -v
======================================================================
FAIL: test_pythonmalloc (test.test_cmd_line.CmdLineTest.test_pythonmalloc) (env_var='mimalloc', name='mimalloc')
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/dietpi/cpython/Lib/test/test_cmd_line.py", line 845, in test_pythonmalloc
    self.check_pythonmalloc(env_var, name)
  File "/home/dietpi/cpython/Lib/test/test_cmd_line.py", line 811, in check_pythonmalloc
    self.assertEqual(proc.stdout.rstrip(), name)
AssertionError: 'mimalloc: warning: unable to directly request hin[119 chars]lloc' != 'mimalloc'
- mimalloc: warning: unable to directly request hinted aligned OS memory (error: 2 (0x2), size: 0x40000000 bytes, alignment: 0x2000000, hint address: 0x20000000000)
  mimalloc


======================================================================
FAIL: test_pythonmalloc (test.test_cmd_line.CmdLineTest.test_pythonmalloc) (env_var='mimalloc_debug', name='mimalloc_debug')
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/dietpi/cpython/Lib/test/test_cmd_line.py", line 845, in test_pythonmalloc
    self.check_pythonmalloc(env_var, name)
  File "/home/dietpi/cpython/Lib/test/test_cmd_line.py", line 811, in check_pythonmalloc
    self.assertEqual(proc.stdout.rstrip(), name)
AssertionError: 'mimalloc: warning: unable to directly request hin[125 chars]ebug' != 'mimalloc_debug'
- mimalloc: warning: unable to directly request hinted aligned OS memory (error: 2 (0x2), size: 0x40000000 bytes, alignment: 0x2000000, hint address: 0x20000000000)
  mimalloc_debug


----------------------------------------------------------------------
Ran 56 tests in 41.751s

FAILED (failures=2, skipped=2)
test test_cmd_line failed
test_cmd_line failed (2 failures) in 43.1 sec

== Tests result: FAILURE ==

1 test failed:
    test_cmd_line

Environment:

dietpi@DietPi:~/cpython$ uname -a
Linux DietPi 6.1.21-v8+ #1642 SMP PREEMPT Mon Apr  3 17:24:16 BST 2023 aarch64 GNU/Linux

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Linked PRs

Activity

  1. furkanonder
    added
    type-bugAn unexpected behavior, bug, or error
    testsTests in the Lib/test dir
    on Nov 13, 2023
  2. AlexWaygood
    added
    topic-free-threading
    on Nov 13, 2023

  3. vstinner commented on Nov 13, 2023

    @vstinner
    vstinner
    on Nov 13, 2023
    Member

    cc @DinoV

  4. corona10 commented on Nov 22, 2023

    @corona10
    corona10
    on Nov 22, 2023
    Member

    Can not reproduce the issue on macOS.

  5. furkanonder
    changed the title [-]AssertionError: 'mimalloc: warning: unable to directly request hin[119 chars]lloc' != 'mimalloc'[/-] [+]mimalloc: warning: unable to directly request hinted aligned OS memory[/+] on Dec 11, 2023

  6. furkanonder commented on Dec 11, 2023

    @furkanonder
    furkanonder
    on Dec 11, 2023
    ContributorAuthor

    The same issue occurs with the RISC-V architecture.

  7. vstinner commented on Dec 11, 2023

    @vstinner
    vstinner
    on Dec 11, 2023
    Member

    Linux DietPi 6.1.21-v8+ #1642 SMP PREEMPT Mon Apr 3 17:24:16 BST 2023 aarch64 GNU/Linux

    Is that Raspberry Pi hardware with 64-bit ARM CPU?

  8. furkanonder commented on Dec 12, 2023

    @furkanonder
    furkanonder
    on Dec 12, 2023
    ContributorAuthor

    Linux DietPi 6.1.21-v8+ #1642 SMP PREEMPT Mon Apr 3 17:24:16 BST 2023 aarch64 GNU/Linux

    Is that Raspberry Pi hardware with 64-bit ARM CPU?

    Yes, Cortex-A53 (ARMv8) 64-bit SoC @ 1.4GHz
    Board: Raspberry Pi 3 Model B Plus Rev 1.3

  9. colesbury commented on Dec 12, 2023

    @colesbury
    colesbury
    on Dec 12, 2023
    Contributor

    We should disable this warning. There's a few warnings from mimalloc that are emitted in debug mode that happen during normal operation and don't signify anything wrong. This is one of them.

  10. colesbury
    added a commit that references this issue on Dec 21, 2023

    pythongh-112027: Don't print mimalloc warning after mmap

    47f76dd

  11. colesbury commented on Dec 21, 2023

    @colesbury
    colesbury
    on Dec 21, 2023
    Contributor

    I ran into this on Linux x86-64 today as well. It's not limited Raspberry Pi (arm64) or RSIC-V.

    Most of the time mmap() will place the mapping at the suggested address, but not always. That's fine -- it doesn't lead to the allocation failing, mimalloc just falls back to a slightly slower path.

  12. corona10
    added a commit that references this issue on Dec 22, 2023

    gh-112027: Don't print mimalloc warning after mmap() call (gh-113372)

    9afb0e1

  13. corona10 commented on Dec 22, 2023

    @corona10
    corona10
    on Dec 22, 2023
    Member

    @furkanonder Please check that the issue is solved :)

  14. furkanonder commented on Dec 22, 2023

    @furkanonder
    furkanonder
    on Dec 22, 2023
    ContributorAuthor

    @corona10 I checked, the problem seems to be solved. So I am closing the issue. Thanks @corona10 @colesbury

  15. furkanonder
    closed this as completedon Dec 22, 2023
  16. ryan-duve
    added a commit that references this issue on Dec 26, 2023

    pythongh-112027: Don't print mimalloc warning after mmap() call (pyth…

    f4f9754
  17. kulikjak
    added a commit that references this issue on Jan 22, 2024

    pythongh-112027: Don't print mimalloc warning after mmap() call (pyth…

    16b913c
  18. aisk
    added a commit that references this issue on Feb 11, 2024

    pythongh-112027: Don't print mimalloc warning after mmap() call (pyth…

    875bd57
  19. Glyphack
    added a commit that references this issue on Sep 2, 2024

    pythongh-112027: Don't print mimalloc warning after mmap() call (pyth…

    1cbde3a
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