594580 - e10s HTTP: fennec segfaults if closed while viewing HTML 5 video

Status: RESOLVED WORKSFORME

(Core :: Networking: HTTP, defect)

Description

[Jason Duell]

cjones discovered this.  Here's the video he used--any HTML 5 vid should do it.  Just close while it's playing.

   http://double.co.nz/video_test/test2.html

jdm: cjones was under impression you've been looking at this--true?

Dies in child with very unhelpful stack in gbd, at least:

#0  mozilla::ipc::RPCChannel::EnteredCxxStack (this=0x7fffb457aba0, that=..., 
    direction=mozilla::ipc::RPCChannel::OUT_MESSAGE, msg=0x7fffb457ab60)
    at ../../dist/include/mozilla/ipc/RPCChannel.h:220
#1  CxxStackFrame (this=0x7fffb457aba0, that=..., 
    direction=mozilla::ipc::RPCChannel::OUT_MESSAGE, msg=0x7fffb457ab60)
    at ../../dist/include/mozilla/ipc/RPCChannel.h:273
Cannot access memory at address 0x7fffb457ab48

Comment 1

[Josh Matthews [:jdm]]

The crash I spent a bit of time looking at was bug 592666, which was a very different stack.  I'd be interested in seeing what |p *this| shows in gdb, here.

Comment 2

[Doug Turner (:dougt)]

can anyone reproduce this?

Comment 3

[Alon Zakai (:azakai)]

Cannot reproduce on Linux 32 GTK.

Comment 4

[Doug Turner (:dougt)]

could be a race.

Comment 5

[Jason Duell]

It used to be 100% reproducible.

I no longer see an error at shutdown during video playback either.  There are still some warnings, most of them common to any fennec shutdown, except these:

NOTE: child process received `Goodbye', closing down
...
###!!! [Child][AsyncChannel] Error: Channel closing: too late to send/recv, messages will be lost
...
WARNING: content process _exit()ing: file /home/jduell/central/t/dom/ipc/ContentChild.cpp, line 395

Not sure if these indicate anything we need to fix, or if we should just RESOLVE WORKSFORME.

Comment 6

[Josh Matthews [:jdm]]

Those messages are nothing special.  I'd call this WFM.