On Tue, 8 Apr 2025 07:48:19 GMT, Roman Marchenko <rmarche...@openjdk.org> wrote:
> All the crashes are on "`movaps`" instructions, like "`movaps xmmword ptr > [esi+0x30], xmm0`". > > "`movaps`" must operate with aligned addresses as >> When the source or destination operand is a memory operand, the operand must >> be aligned on a 16-byte boundary or a general-protection exception (#GP) is >> generated > > written in docs. When crashes, ESI contains value like `0x27DB63A8`, so it > doesn’t seem aligned to 16-byte boundary. The line "`siginfo: > ExceptionCode=0xc0000005, reading address 0xffffffff`" from `hs_err` file > implicitly says it is GP, not a real "reading address 0xffffffff". > > It might be related to clang-cl bug, see > https://github.com/llvm/llvm-project/issues/55844 > > The workaround is to disable SSE when building 32bit on Windows. (`-mno-sse`) This pull request has now been integrated. Changeset: d31f764b Author: Roman Marchenko <rmarche...@openjdk.org> Committer: Kevin Rushforth <k...@openjdk.org> URL: https://git.openjdk.org/jfx/commit/d31f764b565cafdb6cafe88a9676ffba8cb7cdbb Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod 8350284: WebKit 620.1 crashes on startup on Windows x86 32-bit Reviewed-by: kcr, jbhaskar ------------- PR: https://git.openjdk.org/jfx/pull/1764
