Integrated: 8359646: C1 crash in AOTCodeAddressTable::add_C_string
Vladimir Kozlov
kvn at openjdk.org
Tue Jun 17 15:58:33 UTC 2025
On Tue, 17 Jun 2025 02:34:24 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:
> It is concurrency issue. Call to `AOTCodeAddressTable::add_C_string()` happened after checks that AOT code cache is still opened. But, because there is no synchronization, other thread (VM) closed/delete AOT code cache (after dumping) before code in `add_C_string()` accessed it.
>
> Added missed AOTCodeCStrings_lock in places where we modify, store and delete AOT strings table. Moved MutexLocker from `AOTCodeAddressTable::add_C_string()` to its caller and do additional check after it.
>
> I also noticed that we missed similar check after Compile_lock when we are storing AOT code.
>
> Tested hs-tier1-6,hs-tier10-rt,stress,xcomp
This pull request has now been integrated.
Changeset: 96070212
Author: Vladimir Kozlov <kvn at openjdk.org>
URL: https://git.openjdk.org/jdk/commit/96070212adfd15acd99edf6e180db6228ee7b4ff
Stats: 15 lines in 1 file changed: 9 ins; 4 del; 2 mod
8359646: C1 crash in AOTCodeAddressTable::add_C_string
Reviewed-by: adinn, iklam
-------------
PR: https://git.openjdk.org/jdk/pull/25841
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