13239 - Apple Silicon: Embedder invoked with Thread JIT Write Protection in Write state - v8 (chromium.org) <https://bugs.chromium.org/p/v8/issues/detail?id=13239>
On Sunday, August 21, 2022 at 12:25:37 PM UTC-4 ClearScript Developers wrote: > Will do, Jakob, thanks. Since you're interested, we first saw this in > 10.3, where it was very rare and treatable via > "--no_wasm_async_compilation". In 10.4 and later it's ubiquitous, and "git > bisect" has identified the Fast W^X feature as the culprit. That feature > was reverted on the 10.3 branch but apparently relanded for 10.4 and beyond. > > On Friday, August 19, 2022 at 11:38:51 AM UTC-4 Jakob Kummerow wrote: > >> Feel free to report it. I'd be interested to learn more; embedder calls >> while being in writable mode seem a bit surprising. I can't promise we'd do >> anything about it, that depends in particular on how much trouble it would >> be. >> >> >> On Fri, Aug 19, 2022 at 3:50 PM ClearScript Developers < >> [email protected]> wrote: >> >>> Greetings! >>> >>> V8 often calls the embedder to schedule delayed or background work. Our >>> embedder has its own JIT compiler. >>> >>> It appears that sometimes, on Apple Silicon, V8 calls the embedder with >>> Thread JIT Write Protection in the "write, don't execute" state (see >>> pthread_jit_write_protect_np). The embedder then blows up on any attempt to >>> execute its own JIT-compiled code. >>> >>> Our question for the V8 team: Should we report this? Would it be >>> considered a V8 bug? >>> >>> Thanks! >>> >>> -- >>> -- >>> v8-dev mailing list >>> [email protected] >>> http://groups.google.com/group/v8-dev >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "v8-dev" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/v8-dev/a26be36b-b422-47b7-8fa3-60e7a8f0e348n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/v8-dev/a26be36b-b422-47b7-8fa3-60e7a8f0e348n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- -- v8-dev mailing list [email protected] http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-dev/21592424-ce81-450c-9a41-0ce7f1b2813dn%40googlegroups.com.
