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Type: Bug
Resolution: Fixed
Priority: P4
Fix Version/s: 22
Affects Version/s: 19, 21
Component/s: hotspot
Labels:

Subcomponent:
compiler
Resolved In Build:
b17
CPU:

aarch64

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8333945	21.0.5-oracle	Tobias Hartmann	P4	Resolved	Fixed	b01
JDK-8333869	21.0.5	Aleksey Shipilev	P4	Resolved	Fixed	b01

The continuation freeze/thaw mechanism introduced with Loom moves the thread stack in memory. However when PAC is enabled on supported AArch64 CPUs, the saved LR on the stack contains a pointer authentication code signed with the stack pointer at the time the frame was created. After relocating a frame, we need to re-sign the LR with the new stack pointer.

backported by

JDK-8333869 AArch64: fix virtual threads with -XX:UseBranchProtection=pac-ret

Resolved

JDK-8333945 AArch64: fix virtual threads with -XX:UseBranchProtection=pac-ret

Resolved

relates to

JDK-8288023 AArch64: disable PAC-RET when preview is enabled

Closed

JDK-8308503 AArch64: SIGILL when running with -XX:UseBranchProtection=pac-ret on hardware without PAC feature

Resolved

links to

Commit openjdk/jdk21u-dev/70395625

Commit openjdk/jdk/481cfc79

Review openjdk/jdk/9067

Review openjdk/jdk/13322

Review(master) openjdk/jdk21u-dev/671

(4 links to)

Assignee:: Hao Sun

Reporter:: Nick Gasson

Votes:: 0 Vote for this issue

Watchers:: 15 Start watching this issue

Created:: 2022-05-25 06:31

Updated:: 2025-01-08 02:34

Resolved:: 2023-09-24 22:40

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