On Wed, 2 Feb 2022 10:18:38 GMT, Andrew Haley wrote:
>> And this change will keep ROP protection enabled if we fall into the "this
>> VM was built without ROP-protection support.". In that case we'll be
>> protecting generated code, but the VM itself won't be protected. This will
>> run withou
> Just in time for the holidays I have completed an implementation of the JFR
> functionality for AIX. As a side note, this is my first submission to OpenJDK
> 👋
>
> ### Implementation notes and alternatives considered
>
> After modifying the build system to allow the --enable-jvm-feature-jfr t
On Wed, 2 Feb 2022 17:17:10 GMT, Martin Doerr wrote:
> Thanks for the update. As David had written, the Oracle Copyright lines you
> have added are not correct: "Copyright (c) 2022, 2022". I suggest to avoid
> adding new lines for this change until the topic is clarified.
Agreed. I have remove
On Wed, 2 Feb 2022 16:30:56 GMT, Tyler Steele wrote:
>> Just in time for the holidays I have completed an implementation of the JFR
>> functionality for AIX. As a side note, this is my first submission to
>> OpenJDK 👋
>>
>> ### Implementation notes and alternatives considered
>>
>> After modi
On Fri, 21 Jan 2022 22:48:20 GMT, Martin Doerr wrote:
>> Tyler Steele has refreshed the contents of this pull request, and previous
>> commits have been removed. Incremental views are not available.
>
> src/hotspot/os_cpu/aix_ppc/thread_aix_ppc.cpp line 63:
>
>> 61:
>> 62: if (ret_frame.pc
> Just in time for the holidays I have completed an implementation of the JFR
> functionality for AIX. As a side note, this is my first submission to OpenJDK
> 👋
>
> ### Implementation notes and alternatives considered
>
> After modifying the build system to allow the --enable-jvm-feature-jfr t
> PAC is an optional feature in AArch64 8.3 and is compulsory in v9. One
> of its uses is to protect against ROP based attacks. This is done by
> signing the Link Register whenever it is stored on the stack, and
> authenticating the value when it is loaded back from the stack. If an
> attacker were
> PAC is an optional feature in AArch64 8.3 and is compulsory in v9. One
> of its uses is to protect against ROP based attacks. This is done by
> signing the Link Register whenever it is stored on the stack, and
> authenticating the value when it is loaded back from the stack. If an
> attacker were
On Wed, 2 Feb 2022 09:34:20 GMT, Alan Hayward wrote:
> And this change will keep ROP protection enabled if we fall into the "this VM
> was built without ROP-protection support.". In that case we'll be protecting
> generated code, but the VM itself won't be protected. This will run without
> cr
On Wed, 2 Feb 2022 09:29:21 GMT, Alan Hayward wrote:
>> Given that the implementation has now changed so much that it's no longer
>> NOP based, I'll go with @dholmes-ora .
>> One other thing, though: it might be better to say here "but this VM was
>> built without ROP-protection support." That'
On Tue, 1 Feb 2022 18:33:28 GMT, Andrew Haley wrote:
>> But we can't honour that because it is not supported. Further, the
>> suggestion in the referenced discussion seemed to be based on the assumption
>> that doing so would be harmless because it is NOP based, but you have
>> indicated that
> PAC is an optional feature in AArch64 8.3 and is compulsory in v9. One
> of its uses is to protect against ROP based attacks. This is done by
> signing the Link Register whenever it is stored on the stack, and
> authenticating the value when it is loaded back from the stack. If an
> attacker were
On Tue, 1 Feb 2022 21:36:56 GMT, Tyler Steele wrote:
>> Just in time for the holidays I have completed an implementation of the JFR
>> functionality for AIX. As a side note, this is my first submission to
>> OpenJDK 👋
>>
>> ### Implementation notes and alternatives considered
>>
>> After modi
On 2/2/22 08:53, Abigail G wrote:
Whoops, looks like I made the zip wrong, this one should work:
https://0x0.st/oHxy.zip
So it looks like a GC crash:
# SIGSEGV (0xb) at pc=0x7fa2ba719208, pid=29539, tid=29557
siginfo: si_signo: 11 (SIGSEGV), si_code: 1 (SEGV_MAPERR), si_addr:
0x
On Tue, 1 Feb 2022 21:36:56 GMT, Tyler Steele wrote:
>> Just in time for the holidays I have completed an implementation of the JFR
>> functionality for AIX. As a side note, this is my first submission to
>> OpenJDK 👋
>>
>> ### Implementation notes and alternatives considered
>>
>> After modi
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