1046478 - [e10s] Tab crashed when evaluate Element.value="" if value !=""

Status: VERIFIED DUPLICATE of bug 1056018

(Core :: IPC, defect)

Description

[Alice0775 White]

Steps To Reproduce:
1. Enable chrome privileged (i.e. devtools.chrome.enabled= true)
2. Open ScratchPad (Shift+F4)
3. Open about:home
4. Run the following code in chrome privilege:
   
   content.document.getElementById("searchText").value="";

  ---- Nothing happens as expected

5. Keyin text into input field of about:home
6. Run again

Actual Results:
Tab crashed
bp-0bfa49c5-9a65-4846-bf5a-7dd332140731

Expected Results:
No Crash.
The field become empty.

Comment 1

[Chris Peterson [:cpeterson]]

[@ mozalloc_abort(char const* const) | NS_DebugBreak | mozilla::ipc::MessageChannel::DebugAbort(char const*, int, char const*, char const*, bool) | mozilla::ipc::MessageChannel::Send(IPC::Message*, IPC::Message*) ]

Comment 2

[John Schoenick [:johns]]

This is the content process crashing with the assertion:
> sync messages forbidden while handling urgent message

It looks like the parent sends a CPOW to the child, which invokes:
HTMLInputElement::SetValue
-> IMEStateManager::UpdateIMEState
-> PuppetWidget::GetInputContext
-> PBrowserChild::SendGetInputContext
   ... Which is a sync message, being triggered by a CPOW

Comment 3

[Alice0775 White]

no longer crash.

Comment 4

[Alice0775 White]

After landing Bug 1051017 , name of property changed.
So, Now, following statement will crash the tab silently(no crash reports).

window.gBrowser.selectedBrowser.contentDocumentAsCPOW.getElementById("searchText").value=""

Steps To Eeproduce:
1. Enable chrome privileged (i.e. devtools.chrome.enabled= true)
2. Open ScratchPad (Shift+F4)
3. Open about:home
4. Keyin text into input field of about:home
5. Run the following code in chrome privilege:
   
   window.gBrowser.selectedBrowser.contentDocumentAsCPOW.getElementById("searchText").value=""

6. Run

Comment 5

[Dave Townsend [:mossop]]

This is currently the second most popular content crash so might need to be a higher priority.