8351233: [ASAN] avx2-emu-funcs.hpp:151:20: error: ‘D.82188’ is used uninitialized #23925

sendaoYan · 2025-03-06T03:35:20Z

Hi all,

The return type of function const __m256i &perm is __m256i, so const __m256i &perm should be replaced as 'const __m256i perm'.

The function implementation in gcc/clang compiler header:

gcc: lib/gcc/x86_64-pc-linux-gnu/14.2.0/include/avxintrin.h

extern __inline __m256i __attribute__((__gnu_inline__, __always_inline__, __artificial__))
_mm256_loadu_si256 (__m256i_u const *__P)
{
  return *__P;
}

clang: lib64/clang/17/include/avxintrin.h

static __inline __m256i __DEFAULT_FN_ATTRS
_mm256_loadu_si256(__m256i_u const *__p)
{
  struct __loadu_si256 {
    __m256i_u __v;
  } __attribute__((__packed__, __may_alias__));
  return ((const struct __loadu_si256*)__p)->__v;
}

Additional testing:

jtreg tests(include tier1/2/3 etc.) on linux-x64(AMD EPYC 9T24 96-Core Processor) with release build
jtreg tests(include tier1/2/3 etc.) on linux-x64(AMD EPYC 9T24 96-Core Processor) with fastdebug build

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Issue

JDK-8351233: [ASAN] avx2-emu-funcs.hpp:151:20: error: ‘D.82188’ is used uninitialized (Bug - P3)

Reviewers

Vladimir Ivanov (@iwanowww - Reviewer)

Reviewing

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$ git fetch https://git.openjdk.org/jdk.git pull/23925/head:pull/23925
$ git checkout pull/23925

Update a local copy of the PR:
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$ git pull https://git.openjdk.org/jdk.git pull/23925/head

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$ git pr checkout 23925

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https://git.openjdk.org/jdk/pull/23925.diff

Using Webrev

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…ninitialized

bridgekeeper · 2025-03-06T03:36:00Z

👋 Welcome back syan! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

openjdk · 2025-03-06T03:36:15Z

@sendaoYan This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8351233: [ASAN] avx2-emu-funcs.hpp:151:20: error: ‘D.82188’ is used uninitialized

Reviewed-by: vlivanov

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 305 new commits pushed to the master branch:

3d2c3cd: 8352970: Remove unnecessary Windows version check in Win32ShellFolderManager2
c70ad6a: 8352906: stdout/err.encoding on Windows set by incorrect Win32 call
da3bb06: 8352685: Opensource JInternalFrame tests - series2
d809033: 8341775: Duplicate manifest files are removed by jarsigner after signing
a269bef: 8350459: MontgomeryIntegerPolynomialP256 multiply intrinsic with AVX2 on x86_64
c029220: 8352896: LambdaExpr02.java runs wrong test class
c0b61d3: 8352680: Opensource few misc swing tests
3e9a7a4: 8353063: make/ide/vscode: Invalid Configuration Values
8ef7832: 8350471: Unhandled compilation bailout in GraphKit::builtin_throw
ddf326b: 8346888: [ubsan] block.cpp:1617:30: runtime error: 9.97582e+36 is outside the range of representable values of type 'int'
... and 295 more: https://git.openjdk.org/jdk/compare/4bb3d81479c1bbe2c6fc7b5234d0f1b6897be117...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

openjdk · 2025-03-06T03:36:55Z

@sendaoYan To determine the appropriate audience for reviewing this pull request, one or more labels corresponding to different subsystems will normally be applied automatically. However, no automatic labelling rule matches the changes in this pull request. In order to have an "RFR" email sent to the correct mailing list, you will need to add one or more applicable labels manually using the /label pull request command.

Applicable Labels

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sendaoYan · 2025-03-06T03:37:00Z

@vamsi-parasa Could you take look this PR

sendaoYan · 2025-03-06T03:51:01Z

/label add core-libs

openjdk · 2025-03-06T03:52:00Z

@sendaoYan
The core-libs label was successfully added.

mlbridge · 2025-03-06T03:55:25Z

Webrevs

00: Full (060805a1)

sendaoYan · 2025-03-07T12:59:00Z

GHA report 1 test failure:

Job 'macos-aarch64 hs/tier1 gc' report "gc/TestAllocHumongousFragment.java#generational" timed out, this issue has been recorded by JDK-8345958, it's unrelated to this PR.

sendaoYan · 2025-03-07T12:59:32Z

/label add hotspot-compiler

openjdk · 2025-03-07T12:59:36Z

@sendaoYan
The hotspot-compiler label was successfully added.

iwanowww

Looks good. (I'll submit it for testing.)

iwanowww

Testing results (hs-tier1 - hs-tier4) are clean.

sendaoYan · 2025-03-30T13:04:32Z

GHA test failures are unrelated to this PR. Thanks for the reviews @iwanowww

/integrate

openjdk · 2025-03-30T13:05:34Z

Going to push as commit 895aabc.
Since your change was applied there have been 305 commits pushed to the master branch:

3d2c3cd: 8352970: Remove unnecessary Windows version check in Win32ShellFolderManager2
c70ad6a: 8352906: stdout/err.encoding on Windows set by incorrect Win32 call
da3bb06: 8352685: Opensource JInternalFrame tests - series2
d809033: 8341775: Duplicate manifest files are removed by jarsigner after signing
a269bef: 8350459: MontgomeryIntegerPolynomialP256 multiply intrinsic with AVX2 on x86_64
c029220: 8352896: LambdaExpr02.java runs wrong test class
c0b61d3: 8352680: Opensource few misc swing tests
3e9a7a4: 8353063: make/ide/vscode: Invalid Configuration Values
8ef7832: 8350471: Unhandled compilation bailout in GraphKit::builtin_throw
ddf326b: 8346888: [ubsan] block.cpp:1617:30: runtime error: 9.97582e+36 is outside the range of representable values of type 'int'
... and 295 more: https://git.openjdk.org/jdk/compare/4bb3d81479c1bbe2c6fc7b5234d0f1b6897be117...master

Your commit was automatically rebased without conflicts.

openjdk · 2025-03-30T13:05:41Z

@sendaoYan Pushed as commit 895aabc.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.

8351233: [ASAN] avx2-emu-funcs.hpp:151:20: error: ‘D.82188’ is used u…

060805a

…ninitialized

openjdk bot added the rfr Pull request is ready for review label Mar 6, 2025

openjdk bot added the core-libs core-libs-dev@openjdk.org label Mar 6, 2025

openjdk bot added the hotspot-compiler hotspot-compiler-dev@openjdk.org label Mar 7, 2025

iwanowww reviewed Mar 28, 2025

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iwanowww approved these changes Mar 29, 2025

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openjdk bot added the ready Pull request is ready to be integrated label Mar 29, 2025

openjdk bot added the integrated Pull request has been integrated label Mar 30, 2025

openjdk bot closed this Mar 30, 2025

openjdk bot removed ready Pull request is ready to be integrated rfr Pull request is ready for review labels Mar 30, 2025

sendaoYan deleted the jbs8351233 branch March 30, 2025 13:07

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8351233: [ASAN] avx2-emu-funcs.hpp:151:20: error: ‘D.82188’ is used uninitialized #23925

8351233: [ASAN] avx2-emu-funcs.hpp:151:20: error: ‘D.82188’ is used uninitialized #23925

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8351233: [ASAN] avx2-emu-funcs.hpp:151:20: error: ‘D.82188’ is used uninitialized #23925

8351233: [ASAN] avx2-emu-funcs.hpp:151:20: error: ‘D.82188’ is used uninitialized #23925

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