[ASAN] Allocator internal check failed

[mzukovec]

We use Emscripten to build our project and run it on web (emcc 3.1.73).

There is a weird internal assertion that we're hitting.

AddressSanitizer: CHECK failed: asan_allocator.cpp:601 "((user_end)) <= ((alloc_end))" (0x3288, 0x3286) (tid=783417392)

This assertion does not occur if we extend the stack size to something larger than initial (64KB to 16MB).

I also reported the issue on Emscripten github repo:
emscripten-core/emscripten#23352

Sadly, I can not provide simple reproducible for this one, since the workflow is complicated and I have no idea how such internal assertion could happen. Prior to this assertion, we successfully ran with -fsanitize=address, as we do with larger stack size.

Any ideas what could be happening here? Is there anything else I could provide besides the reproducible to diagnose the issue?
I set verbosity and debug flags, but nothing useful came from that.

[mzukovec]

It was due to the insufficient stack size. Some additional Emscripten flags for such cases identified the issue. You may close this.