2057914 - Tempremental inspector crash in event-collector.js

Status: RESOLVED DUPLICATE of bug 2042101

(DevTools :: Inspector, defect)

Description

[Elnu]

Steps to reproduce:

Visiting https://www.sigure.tw in one case caused this error, successive refreshes of the same tab gave the same errors. However, opening the page in a new tab doesn't seem to always give the error, so it's tempremental. I've had difficulty reproducing this consistently.

Error in Inspector Panel:

Error: Protocol error (TypeError): can't access dead object from: server0.conn0.watcher2.process499//domwalker83 (resource://devtools/server/actors/inspector/event-collector.js:278:21)

Client Packet:

{
  "type": "querySelector",
  "node": "server0.conn0.watcher2.process499//domnode82",
  "selector": "body",
  "to": "server0.conn0.watcher2.process499//domwalker83"
}

Server Packet:

{
  "from": "server0.conn0.watcher2.process499//domwalker83",
  "error": "TypeError",
  "message": "can't access dead object",
  "fileName": "resource://devtools/server/actors/inspector/event-collector.js",
  "lineNumber": 278,
  "columnNumber": 21
}

Server Stack:

getDOMListeners@resource://devtools/server/actors/inspector/event-collector.js:278:21
getListeners@resource://devtools/server/actors/inspector/event-collector.js:340:28
hasListeners@resource://devtools/server/actors/inspector/event-collector.js:226:17
hasEventListeners@resource://devtools/server/actors/inspector/event-collector.js:807:21
hasEventListeners@resource://devtools/server/actors/inspector/node.js:445:43
form@resource://devtools/server/actors/inspector/node.js:239:37
write@resource://devtools/shared/protocol/types.js:374:32
types.addArrayType/write/<@resource://devtools/shared/protocol/types.js:224:33
write@resource://devtools/shared/protocol/types.js:224:16
write@resource://devtools/shared/protocol/types.js:272:39
write@resource://devtools/shared/protocol/Response.js:101:22
write@resource://devtools/shared/protocol/Response.js:49:28
sendReturn@resource://devtools/shared/protocol/Actor.js:258:38

Stacktrace:

onPacket/<@resource://devtools/shared/protocol/Front.js:405:31
DevTools RDP*request@resource://devtools/shared/protocol/Front.js:321:14
generateRequestMethods/</frontProto[name]@resource://devtools/shared/protocol/Front/FrontClassWithSpec.js:94:19
querySelector@resource://devtools/client/fronts/walker.js:150:34
#getDefaultNodeForSelection/defaultNodeSelectors<@resource://devtools/client/inspector/inspector.js:729:20
#getDefaultNodeForSelection@resource://devtools/client/inspector/inspector.js:736:20

Comment 1

[Nicolas Chevobbe [:nchevobbe]]

Thanks for the report.

This looks like the same issue as Bug 2042101 (which is fixed in Firefox 154, now in beta)