Crash in [@ vixl::CPU::EnsureIAndDCacheCoherency]

[hcs64]

Crash report: https://crash-stats.mozilla.org/report/index/3f2e7111-f467-4935-a44d-102fd0220717

MOZ_CRASH Reason: MOZ_RELEASE_ASSERT(CPU::CanFlushICacheFromBackgroundThreads())

Top 10 frames of crashing thread:

0 libxul.so vixl::CPU::EnsureIAndDCacheCoherency js/src/jit/arm64/vixl/MozCpu-vixl.cpp:281
1 libxul.so js::jit::ReprotectRegion js/src/jit/ProcessExecutableMemory.cpp:782
2 libxul.so js::wasm::ModuleSegment::initialize js/src/wasm/WasmCode.cpp:345
3 libxul.so js::wasm::ModuleGenerator::finishModule js/src/wasm/WasmGenerator.cpp:1223
4 libxul.so js::wasm::CompileStreaming js/src/wasm/WasmCompile.cpp:919
5 libxul.so CompileStreamTask::execute js/src/wasm/WasmJS.cpp:5133
6 libxul.so {virtual override thunk} 
7 libxul.so js::GlobalHelperThreadState::runOneTask js/src/vm/HelperThreads.cpp:2786
8 libxul.so HelperThreadTaskHandler::Run js/xpconnect/src/XPCJSContext.cpp:1167
9 libxul.so mozilla::ThreadFuncPoolThread xpcom/threads/TaskController.cpp:179

This is becoming a top crash, over 200 reports so far (~20 from me), starting build 20220717090304 (with a few earlier from 20220705093820). It seems to happen when loading a page, but also when just bringing up the address bar. I haven't yet tried with a clean profile as I'm not sure how to back it up on Android.

┆Issue is synchronized with this Jira Task

[Nojuuu]

Disabling uBO fixed it for me.

[hcs64]

Disabling uBO fixed it for me.

Thanks, that seems to fix it for me, too, and reenabling it immediately crashes.

[hkaancaliskan]

Also happens on uBO first install

[FeDaniil]

Disabling only uBO didn't fix it for me, but disabling all the extensions helped.

[Guest126]

Related: bug 1779968 - Startup Crash in [@ vixl::CPU::EnsureIAndDCacheCoherency]

[UnpopularOpinion]

Disabling only uBO didn't fix it for me, but disabling all the extensions helped.

I encountered the same. Afterwards, I tested out combinations of extensions to disable and it seems that HTTPS everywhere and uBlock are the ones causing the issue for me. My other extensions (privacy badger, dark reader and YT High Def) did not need to be disabled to resolve the issue.

[Amejia481]

We're backing out the culprit for the Nightly topcrash and will spin new builds as soon as possible afterwards

Matrix's comment cc @rvandermeulen

[kbrosnan]

Closing for upstream Bugzilla bug.