After several attempts at debugging this, I *think* I've narrowed it down to the some sort of interaction with QEMU as it consistently happens when running V8 on an emulated Android device on both 32- and 64-bit architectures.
On Thursday 7 March 2024 at 09:48:23 UTC+1 Kasper Isager Dalsgarð wrote: > A colleague of mine briefly hit the same assertion on Android arm64-v8a, > but has since been unable to reproduce it. I still haven't been able to > narrow down what triggers it. > > On Thursday 22 February 2024 at 12:07:22 UTC+1 Kasper Isager Dalsgarð > wrote: > >> I'm consistently observing a crash on Android armeabi-v7a during scavenge >> collection triggered by `String::NewFromUtf8(Isolate *, const char *)`, >> though I don't suspect that the exact call that triggered the scavenge >> collection relates to the issue. For reference, this is the failing debug >> check I'm hitting: >> >> ``` >> # >> # Fatal error in ../../../v8/src/heap/scavenger.cc, line 393 >> # Debug check failed: copied_list.IsEmpty(). >> # >> ``` >> >> I'm having a really hard time debugging why this happens and the fact >> that it doesn't happen on arm64-v8a has me even more puzzled. I've read >> through https://groups.google.com/g/v8-users/c/sdU232XmyOw where the >> same debug check failed, but the was caused by a race condition whereas the >> code I'm running uses only a single thread. >> >> Which APIs could cause that check to fail? I've tried removing all my >> uses of weak persistent handles, for example, but that doesn't make a >> difference. Could it my `Platform` implementation that breaks some >> invariants that I'm not aware of? >> >> All of the code that interacts with V8 is available here by the way: >> https://github.com/holepunchto/libjs. I of course don't expect anyone to >> read through all of that, I'll provide excerpts and summaries of portions >> that might be relevant to the issue. >> >> Any help would be much appreciated, thanks! >> > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-users/a20200ad-25a6-4791-92af-cb5de753087dn%40googlegroups.com.
