This bug was filed from the Socorro interface and is report bp-f406241f-e18c-463c-90c3-31fd00180825. ============================================================= Top 10 frames of crashing thread: 0 xul.dll mozilla::dom::Promise::All dom/promise/Promise.cpp:162 1 xul.dll class RefPtr<mozilla::dom::Promise> mozilla::ExtensionPolicyService::ExecuteContentScripts toolkit/components/extensions/ExtensionPolicyService.cpp:362 2 xul.dll struct already_AddRefed<mozilla::dom::Promise> mozilla::dom::`anonymous namespace'::NativeThenHandler<`lambda at z:/build/build/src/toolkit/components/extensions/ExtensionPolicyService.cpp:401:7', mozilla::ExtensionPolicyService*, nsCOMPtr<nsPIDOMWindowInner>&, AutoTArray<RefPtr<mozilla::extensions::WebExtensionContentScript>, 8> >::CallResolveCallback dom/promise/Promise-inl.h:113 3 xul.dll mozilla::dom::PromiseNativeThenHandlerBase::ResolvedCallback dom/promise/Promise.cpp:235 4 xul.dll ?ResolvedCallback@PromiseNativeHandlerShim@?A@dom@mozilla@@UEAAXPEAUJSContext@@V?$Handle@TValue@JS@@@JS@@@Z$c5275f10b14907164f39278f694797f8 dom/promise/Promise.cpp:394 5 xul.dll static bool mozilla::dom::NativeHandlerCallback dom/promise/Promise.cpp:343 6 xul.dll js::InternalCallOrConstruct js/src/vm/Interpreter.cpp:537 7 xul.dll static bool InternalCall js/src/vm/Interpreter.cpp:588 8 xul.dll js::Call js/src/vm/Interpreter.cpp:607 9 xul.dll static bool PromiseReactionJob js/src/builtin/Promise.cpp:1542 ============================================================= There is 1 crash in nightly 63 with buildid 20180824222409. In analyzing the backtrace, the regression may have been introduced by patch [1] to fix bug 1484373. [1] https://hg.mozilla.org/mozilla-central/rev?node=a7848dcb339e

Comment on attachment 9004023 [details] Bug 1486199: Ignore null promises when injecting content scripts. r=mixedpuppy Shane Caraveo (:mixedpuppy) has approved the revision.

https://hg.mozilla.org/integration/mozilla-inbound/rev/24a110d82c0f52e757878dbfa7b0c62f2bd0b2fa Bug 1486199: Ignore null promises when injecting content scripts. r=mixedpuppy

Is manual testing required on this bug? If yes, please provide some STR and the proper extension(if required) or set the “qe-verify -“ flag. Thanks!