RFR: 8374516: -version asserts with "-XX:+UseAESCTRIntrinsics -XX:-UseAES": "need AES instructions and misaligned SSE support" in generate_counterMode_AESCrypt_Parallel() [v2]
Guanqiang Han
ghan at openjdk.org
Tue Feb 3 12:04:50 UTC 2026
> Please review this change. Thanks!
>
> **Description:**
>
> VM crashes during startup on x86 when running with -XX:+UseAESCTRIntrinsics -XX:-UseAES. In this configuration, UseAESCTRIntrinsics may remain enabled while UseAES is explicitly disabled, and the VM generates AES-CTR stubs, hitting an assert(UseAES) in generate_counterMode_AESCrypt_Parallel().
>
> **Fix:**
>
> Update x86 flag initialization to enforce the dependency between UseAESCTRIntrinsics and UseAES. When UseAES is disabled, explicitly disable UseAESCTRIntrinsics (with a warning when it was set on the command line), aligning behavior with the existing UseAES/UseAESIntrinsics gating and avoiding stub generation with inconsistent flag states.
>
> **Test:**
>
> GHA
Guanqiang Han has updated the pull request incrementally with one additional commit since the last revision:
optimize warning log
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/29338/files
- new: https://git.openjdk.org/jdk/pull/29338/files/6e7035dd..7eb2b386
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=29338&range=01
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=29338&range=00-01
Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
Patch: https://git.openjdk.org/jdk/pull/29338.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/29338/head:pull/29338
PR: https://git.openjdk.org/jdk/pull/29338
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