RFR: 8371948: TestStackOverflowDuringInit.java fails xss too small on linux-aarch64 [v5]
SendaoYan
syan at openjdk.org
Thu Dec 11 01:57:58 UTC 2025
> Hi all,
>
> On linux-aarch64, when page size is 64K, the minimal java thread stack size is 448K. So this PR increase the minimal java thread stack size in test/hotspot/jtreg/runtime/ClassInitErrors/TestStackOverflowDuringInit.java. Below is the calculation formula for the minimal java thread stack size:
>
>
> page_size = 64K
> _java_thread_min_stack_allowed = 72K
> _stack_red_zone_size = align_up(StackRedPages * unit, page_size) = align_up(1*4K, 64K) = 64K
> _stack_yellow_zone_size = align_up(StackYellowPages * unit, page_size) = align_up(2*4K, 64K) = 64K
> _stack_reserved_zone_size = align_up(StackReservedPages * unit, page_size) = align_up(1*4K, 64K) = 64K
> _stack_shadow_zone_size = align_up(StackShadowPages * unit, page_size) = align_up(25*4K, 64K) = 128K
> _java_thread_min_stack_allowed = align_up(72K+64K+64K+64K+128K, 64K) = 448K
>
>
> This PR add whitebox API getMinimumJavaStackSize() to the the allowd minimum java stack size, and get the allowed minimum java stack size in test/hotspot/jtreg/runtime/ClassInitErrors/TestStackOverflowDuringInit.java
>
> Change has been verified locally both on linux-x64 and linux-aarch64.
SendaoYan has updated the pull request incrementally with two additional commits since the last revision:
- remove test/hotspot/jtreg/runtime/memory/ReadMinimumJavaStackSize.java
- Use get_minimum_java_stack_size instead of get_minimum_java_stack_sizes
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/28352/files
- new: https://git.openjdk.org/jdk/pull/28352/files/f45cc0cb..ee8c621f
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=28352&range=04
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=28352&range=03-04
Stats: 51 lines in 5 files changed: 0 ins; 46 del; 5 mod
Patch: https://git.openjdk.org/jdk/pull/28352.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/28352/head:pull/28352
PR: https://git.openjdk.org/jdk/pull/28352
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